DAY 1: Penn Dixie
Returned Monday evening from four fabulous days swinging hammers, slabbing and splitting in the field. We managed to hit two sites, with plans for a third site falling through due to weather and site conditions.
We left home on the Friday morning to arrive at Penn Dixie, in Hamburg/Blasdell NY (south of Buffalo) by noon time. It was not a public collecting day at the site, but members of the Hamburg Natural History Society are permitted to enter the site.
A group of us digging through some fresh material
Of particular note was just how much PD had changed since last season, and that is due almost entirely to some well-directed excavations at some key spots to reveal more of the Smokes Creek trilobite layer, but also opening up other on-site locations such as the Bayview brach layer and the North Evans limestone. We had the excavator on site for the second day, with the previous day ripping up a new spot in preparation for the annual Dig with the Experts event. We did not touch those piles, and focused on other spots.
I found this piece of Devonian wood, and it is a fairly healthy size for this location.
One of the excavated spots we spent the most time working on was fairly thin on trilobites, which suggests that they appear in deposition pulses on the seabed. There's no way knowing in advance if there will be a lot of trilobites, and so you hope to hit paydirt by attacking the Smokes Creek layer.
A fairly large Goniatite, sadly all busted up.
Later in the day, we migrated to a new gully area where some of our other collectors on the Sunday previous had found a few examples of the rare Bellacartwrightia whiteleyi trilobite. Sadly, that lead dried up and no Bellas were found. For the most part, trilobites were mostly appearing as disarticulated bits and moults, with not much in the way of assemblages or complete prones and rollers.
Full prone, but containing shell on both sides of the rock. This will need to be glued together and prepared.
I did have some luck despite the parsimonious nature of the slabs we were splitting. However, the "trilo-bonanza" was still eluding us all. A little before sunset we decided to leave and check in to our motel, grab some pub food, and rest up for day 2 of our trip.
DAY 2: Deep Springs Road
At around 6 am the next morning, our friend Jay picked us up at the motel to begin our first ever trip to Deep Springs Road in Central NY (Madison Cty). DSR, as it is known, has a shale outcrop that rests at the farthest edge of the Windom Formation, but the fauna is quite different than what is found at Penn Dixie. For example, instead of bountiful Eldredgeops rana, they are much rarer here, and in their place are more Greenops sp. and Dipleura dekayi. Also, the real stunner is the enormous diversity of bivalves and brachiopods. It is also quite abundant in Devonian plant pieces, larger cephalopods, phyllocarids, and other goodies.
Our crew gearing up to work.
We arrived just after 10 am, having gone through the scenic rolling hills and farmlands of Central NY. We were greeted at the site by so many of our Fossil Forum friends, some of whom I got to meet in person for the first time. There was no shortage of fun-loving personalities here, and the amount of camaraderie, sharing, and helpfulness was exceptional.
Jay and me ready to start wrecking it all up to do some serious landscaping.
Within five minutes, I was ready to get to it. In the picture above, that wall behind me would be the first to be ripped out to generate a lot of slabs for splitting. By the end of the day, I would have cleared an area 2 m x 2m x 1.25 m.
This slab simply has to go, 150-200kg or not.
Unlocking fresh stuff requires some slabbing, something I tend to enjoy doing. After some overburden was cleared, it was time to maneuver this one off the ledge. As can be seen above,. the rock is heavier than me as I sit on the pinch-point bar which was bending. Eventually, I was able to work from the left wall, wrestling it out, and driving it with my boots down the hill for others to split.
Group shot. From left to right: Dave, Jay, me, Mike, Tim, Dave 2, Jeffrey, and Leila (who fed us scrumptious homemade cookies).
The weather had been promising to make this trip a real bust, but fortunately we only had some intermittent drizzle, with the rest of the time being clear and not too hot. Everyone came away with lots of interesting finds, and friendships were formed or strengthened in breaking rock together.
Bivalves and gastropods. I'm not really up on the taxa, but these are fairly typical finds for this site.
More neatly ridged bivalves.
Large spiriferid brachiopods are fairly abundant at DSR.
On the left is a nice association piece: a spirifer, a Greenops pygidium, and a Devonochonetes sp. . On the right is a high-spired Glyptotomaria.
A well-preserved Cimitaria recurva.
Deb found this wee Greenops that might be complete once I can remove some matrix. This one is barely a few millimetres long.
As Eldredgeops rana are not common here, I bucketed this roller.
Large cephalons from Dipleura dekayi. Finding them full as opposed to moults and disarticulated bits is an event. I think only one of us found a complete prone that day, while someone else found a complete one with the head disarticulated.
More Dipleura dekayi. I'll need to probe this piece a bit more to see if they might be complete (but I somehow doubt it).
A nautiloid and an ammonoid fragment.
With the collecting day over, it was time for us to get back to the Buffalo area. As is natural for us fossil collectors, we never miss an opportunity if we're collecting together to share some gifts. A massive amount of gift exchanges ensued! I was sure to hand out plenty of goodies from Arkona, as well as whatever Ordovician extras I had lying around. Pictured up here is a lovely Herkimer diamond from Dave. These quartz crystals are quite spectacular, and regularly have inclusions of anthraconite.
Another of Dave's wonderful gifts: an assortment of mostly brachs, bivalves, and gastropods from Cole Hill Road.
The other Dave put out a box for all of us to take whatever we fancied. This is a fern from the St Clair site, a site that is no longer open to public collecting.
Of course, little did I know that Tim remembered that Deb really liked those St Clair ferns, and so she received some pieces as well!
Tim gifted me a plethora of trilobites. Two new species on my list: Crotalochephalina gibbus (the Devonian phacopid from Morocco at the very top), Changaspis elongata (a wee corynexochid from the Cambrian, China), a full Greenops sp. from DSR in case I had no luck, and three nodular Eldredgeia venustus from Bolivia.
And the second bunch from Tim. A large Elrathia kingii with cheeks intact + impression, and the rest are Eldredgeops rana.
And Jay gave me a copy of the reprinted classic, Geology and Palaeontology of Eighteen Mile Creek by Grabau. The taxa listed in this one is pretty much the same as what is found at Penn Dixie, and some of those taxa are now outdated or reassigned. But it is indeed a classic from a real pioneer and giant of palaeontology.
DAY 3 - Penn Dixie
After two days collecting with Fossil Forum friends, it was now time for Deb and me to hit out on our own. Plans to visit another site on Sunday were nixed on account of weather... Yes, it was snowing in the Buffalo area! Deb went shopping in the morning, but by the afternoon the sun was out, so we figured we may as well play at Penn Dixie again. Although it was 10 C, the winds were bitterly cold.
Deb standing in the newly excavated zone we were all working on the Friday.
We decided to make a go of trying to find the elusive trilobite layer. This involved a great deal of hauling out slabs. Again, we treated the piles for the Experts event as off-limits.
The Smokes Creek layer is usually at or below the water table. This is what one of the gully areas looked like before I came in to rip out about 2 m wide of slabs. Sadly, the rock was far too dense, and shattered rather than split. Much of what was coming out was just bits and pieces anyway.
This trio of images shows the process required to access fresh material. As these slabs at the contact layer tend to interlock, it is important to kind the keystone slab to unlock them. In this instance, I've used the chisel to exploit and widen a crack running vertically. This one is tucked under another rock, so I had to use the pry bar to wiggle and jiggle it out. After that, I flip the rock over and scrutinize the underside; if there are trilobites or impressions thereof, I then carefully inspect the mini-domes at the site of extraction. As the water is muddy, this is largely done by touch. After that, it is time to remove another slab or split the ones I have.
Probably my best find of the day. The split runs right through the trilobite, but some crazy glue and prep will make this fairly large one turn out just fine.
This one came with a small price to pay. As I was tossing down a slab, it hit the pick end of my rock hammer, which then came at my face like a bullet. It struck and split my cheek, not far from my eye! It could have used a stitch or two, but I simply clamped it together with a bandaid.
Day 4 - Penn Dixie (Again)
After three days of slabbing, splitting, pounding with sledges, wrestling with pry bars, shovelling tons of overburden, my body just about had it! It was also our departure day, which meant we needed to get back on the road by 2 pm at the latest. So we agreed to inspect the newly excavated Bayview brachiopod area where, last October, we were pulling out buckets of brachs.
This stuff splits fairly easily - sometimes just with your hands. Trilobites like Greenops are much more common here, but the shale is so thin and fragile, and the trilobites usually only come out as disarticulated bits.
Brachiopods come out easily from the shale, if they haven't already weathered out and make for some easy picking. These are from about a minute of searching. Inasmuch as we agreed that we'd just do some light surface collecting, after 20 minutes we were getting bored with the brachs (we still have several hundred of them from October's visit),.so we went exploring back to the trilobite beds in search of a plentiful area.
Going through my splits, Deb finds this beauty.
A spot-check on some nearby rocks indicated that this particular area on the site might prove productive. Pictured here, after I removed the covering slab, is a very large dome. Domes at PD can either be full of trilobites or full of nothing.
Paydirt! We finally found the productive part of the layer. Although none of these are complete, it is strongly indicative of the presence of more assemblages in the depositional environment. Of course, it was almost time for us to leave just when we found the sweet spot. But we did manage to pull out a few rollers and near-completes that I haven't had a chance to photograph yet, but I think I've got the real highlights here in this post anyway.
And so it was back to Canada after a four day adventure. I was beyond sore, of course, but overall it was great to collect with friends old and new, enjoy the outdoors, and come away with treasures found and gifted.
Upcoming digs will likely be in the Arkona/Thedford area, and a trip to Bowmanville at the end of this month. Until then, time to manage some new backlog on the prep bench!
Given the heavy grading work at the backend of this year, and the dodgy weather, I am having to call it on the collecting season. November has been a fairly poor month for collecting: if it wasn't raining (or snowing), the nicer days frustratingly coincided with days I had to be on campus.
But as I lay down my trusted tools in my move from labour to refreshment, I can look back on this year having been my absolute best. And, perhaps, much credit is due those reliable tools that have served me so well in breaking through hundreds of tons of rock. Of course, credit is mostly due my lovely partner Deb who not only added thousands of clicks to the car, but for being such an enthusiastic co-collector.
This year's trips included:
* 2 to Penn Dixie (Devonian)
* 2 to Brechin (Ordovician)
* 1 to Bowmanville (Ordovician)
* 1 to Collingwood area (Ordovician)
* 12+ to Arkona (Devonian)
* 30+ to my nearby honey hole (Devonian)
Many of those trips have reports posted here in the blog. It has also meant meeting plenty of new collecting friends with whom to break rock with. If that were not in itself fantastic, I also got into preparation courtesy of having purchased an air eraser and air scribe. I've upped my game considerably, turning a casual hobby into a true passion. It was not that long ago that I may have made a few short visits to Arkona and in my backyard with little more than a nail hammer and a wood chisel. Now, with the right tools, I carved out hundreds of feet of benches and cracked hundreds of tons of rock. The collection has grown by an order of magnitude.
I also purchased or was gifted several delightful pieces this year. Another aspect that has made this a banner year would be a surge of trilobites where 2017 added no fewer than 29 new species, a few of them very rare and not reliably reported in the literature.
Above is a snapshot of many of the new species in my display.
So, last year I made a "best of" post for each category. This year is going to be immensely difficult to make those choices as so many of them are deserving of the honour. But try I must.
Best trilobite of the year
Despite all the lovely ones I've purchased, received, and found - particularly from the Ordovician - I'm giving the nod to this lovely plate of three full Greenops widderensis. Certainly this species is not new to the collection, but the rarity of finding so many clustered together like this in a difficult matrix makes it worthy. My runners-up would be Mannopyge halli, and Isotelus, Ceraurus, and, well, all the other ones I found!
Honourable mention goes to this beauty, expertly prepped by Malcolm Thornley.
Best cephalopod of the year
It's a three-way tie. It could have been four if I included the the big nautiloid whoppers I found at Brechin. Clockwise from top left: a lovely Goniatite from Arkona, some lovely Jurassic ammonites from Roger, and an exquisitely pyritized nautiloid from the Widder shale.
Best PISCES of the year
Amidst some cool placoderm pieces, and some really neat Diplurus pieces from Tim, the prize this year goes to Deb and her huge chunk of placoderm armour belonging to Protitanichthys.
Best gastropod of the year
Plenty of contenders this year, including some nicely preserved Platyceras, and some rarer spired gastros from the Verulam Formation, but I'm settling on this long one from the Verulam for its size alone.
BEst bryozoan of the year
I always pick up interesting looking bryozoans, and this year saw quite a few. However, hands down, this Constellaria from the Verulam Fm will take the prize if only on account of its exceptional rarity in that formation.
Best ichnofossil of the year
I don't really get jazzed about ichnofossils, but this broom-headed one was so worth picking up that even Deb found one on our second trip to Brechin. This one is Phycodes ottawensis, and these are formed by worms burrowing from the same spot repeatedly taking different pathways in the muck.
best phyllocarid of the year
Another fantastic find by Deb at Arkona, a thick phyllocarid jaw. This would be our first.
best brachiopod of the year
No point making a decision. I've pulled quite a few nice brachs this year, but this smorgasbord of about 1,000 intact ones spanning 6 species from Penn Dixie will have to be the winner this year.
I'm begging off the best coral of the year, and a few other categories. I can say the fossil I collected that came from the farthest distance from home would be the Cretaceous oysters and sundry bits from Magoita Beach in Portugal.
But this year would not have been anywhere near as spectacular if it weren't for the people whose time, company, and generousity truly made it shine. Apart from Deb, I can certainly add to the roster of great fossil companions, Tim J., Malcolm T., Roger F., Jay W., Kevin B., Kevin K., Jason R., Ralph J., Marc H., Ron B., and others I may have neglected to mention.
Best year ever! And thanks to the visitors to this blog for reading. Perhaps more posts will be in the offing as winter time means being holed up indoors and engaging in some prep.
UPDATE: Malcolm just showed me a few bugs of mine and Deb's that he prepped. A true master. The left one is Ceraurus and the right one is a Greenops.
It was just a week ago that we spent all day carving out big slabs of Widder shale from the productive Tornoceras layer above the brachiopod layer. With the weather holding on to summer by its eye teeth, it was an impromptu invitation from a fellow TFF member, Kevin, who is part of a fossil club that saw us loading up our tools and spending our Saturday in the sun.
We began in the south pit. I spent the morning digging into the high energy coral biostrome of the Hungry Hollow Member, picking through the softer, shale layers. Apart from large rugose corals, there are brachiopods, pelecypods, bryozoan colonies, and trilobites. Because the deposition conditions were turbid, high energy environments, most trilobites only appear as fragments.
Pictured here is one of many of the large trilobite fragments that can be found in this layer. The most common species in this layer is Eldredgeops rana. This one is fairly large, even for this site as evidenced by this plump and inflated glabella. Prepping it a bit more, this one is nearly 2 inches wide.
When I first found this one in the biostrome, all that was showing was the glabella. After some prep with a Dremel and then sewing needle, I uncovered more of the cephalon, but also discovered another cephalon to the bottom left. Sadly, neither are complete, but I was happy to bring out some detail.
The second most abundant species in this layer is Crassiproetus candadensis. Pictured above is how one usually finds them: mostly pygidiums. The crushed one on the right has a slim chance of continuing into the rock, but I am skeptical.
By the afternoon, we made our way to the north side, and I took others to my favourite cliff exposure. This spirifer is quite nice as they can be very delicate, so it is not common to acquire a matrix-free one with its wings intact. This one is over 2 inches wide.
I spent almost four hours in the same spot extending a bench and moving about 30-40 cubic feet of shale. I mostly had to remove a lot of overburden and layers of less productive shale to get to my coveted low energy layer that rests atop the hard brachiopod layer, but also has a chance of finding very nicely preserved ammonoids and nautiloids. The productive layer is about 3-6 inches thick. Again, I failed to find a fully complete and pristine Greenops widderenesis, although the fact that they appear mostly complete as opposed to lots of shredded bits increases the probability of encountering one. I collected this for practice prep as I am expecting a Paasche air eraser in the mail in the next week or so.
Of the 4 or 5 I collected on this day, this one was in the middle of a large slab of shale. It took a lot of careful finesse to extract it without having the shale split through it, or the vibration of the extraction process knock off any of its delicate and flaky shell. This one will clean up fairly nicely.
I don't usually bother with fragments unless they have something special about them. In this case, the cephalon is much larger than one typically finds for a Greenops. This one is over an inch wide. Typically, the species is a little over an inch long. On the right is an impression with some of the shell sticking to it.
Last week I found a large and inflated Tornoceras uniangulare. So why not find another one? This one is slightly smaller and thinner than the one I previously found, but the detail on this one is fantastic. I think it is a gorgeous specimen.
Not pictured would be my usual assortment of odds and sods I always found at Arkona. Although once again I was skunked on finding a pristine Greenops, I still made out very well, and got to collect with two members of the Fossil Forum, too.
Lastly, this piece was not found in Arkona, but I rediscovered it while going through a trip bucket. I picked this up from the Verulam Fm in Brechin. Is it a big crinoid head? Nope. It is an ichnofossil; i.e., a trace left by an organism or organisms. In this case, it is Phycodes ottawense. This mop-headed piece is caused by worms burrowing repeatedly into the sediment from the same spot. Worm burrows bore me to bits, but this one was worth picking up due to its neat appearance.
But stay tuned: there will be at least three major events coming up: 1. Cleaning up a lot of fossils with the new air eraser once that comes and I get a good air compressor; 2. A multi-day trip return to Penn Dixie in October; 3. A possible trip back to the Ordovician on the hunt for Isotelus in Bowmanville in late October. Even without those upcoming events, this has already been the best collecting year ever.
Deb and me spent the day at our usual Arkona spot, focusing exclusively on the calcareous layers of the Widder Formation in search of more complete Greenops widderensis. We certainly moved a lot of shale with results that may have fallen short of pristine specimens, but far better luck than we'd been having this year. Having zeroed in on a very productive layer, we were finding more relatively complete specimens rather than just bits.
A mixed bunch of semi-partials on the left, and more complete specimens on the right. Sadly, even the complete ones are fairly damaged or distorted - that's just the way the Widder breaks.
What some of these look like after a bit of prep. The one on the left is likely a complete roller, but far too delicate for the tools I have on hand to prep out better. The one in the centre is complete save for the disappointing damage to the upper right cephalon. The one on the right is likely complete, but crushed and would require far more precise tools under a scope to prep.
A heavily pyritized Michelinoceras was among the circumstantial finds. The layers with the higher percentage of full trilobites rests above the hard brachiopod layer, but will also have its fair share of nautiloids and ammonoids. There is also a thin yet productive layer beneath the brachiopod layer that has several ammonoids, but fewer trilobites overall.
Generally, at this level of the Widder Fm, if it is long, thin, and not straight, it will be a pyritized worm burrow. In this instance, we have the appearance of fairly uncommon crinoid stalk which looks to possibly be terminating in a calyx (only some prep will determine one way or another). This would be the first evidence of crinoid I've seen this high up in the formation.
Ammonoids (Tornoceras uniangulare). The two little ones need a bit of a cleanup, while the middle is a whopper at 35 mm. The big one was wedged between two bedding planes in a large slab I was splitting. Although on the hunt for Greenops, this was a trip maker for me. It is fully inflated and intact - not terribly common for the larger ones in that shale as they tend to come out flattened and crushed. The smallest ones at the site (Tornoceras arkonense) come out of the Arkona Formation, and readers of this blog have seen pictures of several ones I've pulled out from there.
The detail on it is also quite good, and might look even better with proper preparation. Those suture lines are fantastic.
But perhaps the real trip-making prize goes to Deb for this find. This is a substantial piece of the arthrodire placoderm, Protitanichthys sp. (I think). It lacks the plate segments of a Bothriolepis canadensis. Most people just find tiny pieces of fish plate, so this one is a really great find. The exact species is not entirely certain to me yet, but the Devonian fish of the Widder are not well described.
So, although we didn't quite find any pristine trilobites this time, the stuff we found by chance in the same layers was more than worth the effort.
Before signing off, for those who would like to see just the trilobites in the expanding collection, I've created a separate gallery page here. It can also be accessed using the green button at the top right of this blog.
I was able to spend a solid two hours in the south pit at Arkona this past weekend. The rain went from drizzle to downpour, and as mucky and unpleasant as it might make a sustained outing, the weather this season has been so erratic and rain-soaked that it is nigh impossible to plan collecting trips around (unreliable) forecasts.
Still, I made it fairly well in what was mostly a surface collecting operation. The rain brought out the colours of the weathered out fossils very well, making their browns and blacks "pop" for easier spotting.
Weathering out of the Arkona clay, I spotted quite a few of these goniatites. On sunny days, at the right angle, the sunlight makes their pyritized surfaces shine and become easily found; in rain, they show up as dark brown against the Arkona shale's light grey. But these are all full specimens. I've arranged these in ascending order of size, and I was quite impressed to find such large ones when a lot of them tend to be hardly larger than the head of a pin.
Finding full Eldredgeops rana rollers is not unheard of here, but the place does get picked over so thoroughly that they certainly are tougher to find. This roller (pictured at the bottom) had its pygidium sticking up and my eye was immediately drawn to it. As finding disarticulated pieces are the norm, I was pleasantly surprised when it turned out this one was complete. Pictured above it is a small piece of fish plate.
This bumpy piece is a bryozoan. I don't find many of this particular type, and its constellatory arrangement reminded me of when I found that very rare bryozoan at the JD Quarry in June.
The amount of coral one has to sift through can be exasperating, but from time to time one encounters a nice piece worthy of putting in the collecting kit. In this case, a multi-cup example where the calyxes are very nicely articulated.
A collection of Platyceras spinosum. The one on the far left has still retained some of its stubby spines, while the one in the middle is a juvenile. One little fact about these gastropods is that they were coprophagous (they ate poop!), and so it is common to see them fossilized as being a symbiotic attachment to various creatures, particularly crinoids (although I do have one that affixed itself to a coral).
I always manage to pick up little goodies, even if I already have plenty of examples of these already. This assortment is heavily dominated by crinoid ossicles, some with cirra, but if you look closely you will find some tiny nautiloids, brachiopods, and the "button coral" Microcyclus on the upper left hand side.
And, finally, below is a short slideshow of some of the above finds under digital microscope at x75 magnification. In all, not a bad haul for two hours collecting in lashing rain!
Nothing too remarkable about the finds from two trips to Hungry Hollow, the first with Roger, and the second with my Deb. But I may as well post some finds.
On the Tuesday trip with Roger, we did scour the north pit, hacked out some slabs from the north river exposure, and ended by doing some surface collecting in the south pit. On the Sunday trip with Deb, we focused on the south pit since the north is filled with deer flies in the dense bush.
I looked in vain for the other half. This was worked out of the coral layer of the Hungry Hollow member.
Deb splits a coral to get a look at the structure inside.
A typical hash plate from the Hungry Hollow member, the layers without as many corals. You can see some trilobite cephalons in there.
Brach-encrusted shell pavement from the Arkona Formation. Found with Roger on the north pit part of the trip.
Not entirely sure what this is yet (to be updated). Could it be a Basidechenella trilobite glabella? About an inch long.
A pelecypod from the coral layer.
Lots of stuff going on here. Trilo-bits, a possible fish plate, tons of crinoid bits, a Platyceras conicum (lower left), brachs, etc.
Next up are a few of Roger's pictures and finds after he cleaned them up:
Roger snaps a picture of me up in the bench.
We were finding a few of these pyritized orthocones in the Widder shale. Not in itself a rare thing, but this one is intriguing.
These Tornoceras arkonense really clean up well! You can pick them out of the Arkona shale, but they also come out a bit bigger in the Widder shale. One must just be on the lookout for a bit of metallic glint, suggestive of something pyritized - and it could be one of these.
This one is a bit of a mystery. It is about 7 mm, but has some strange suture patterns. We're not sure which of us found this in the Arkona Fm, but that is immaterial. It is not a Tornoceras, and neither of us can find this ammonoid described in the usual places (such as the Stumm and Wright checklist or on the UMMP database). Could this be a new and undescribed species?
Now that the course I was teaching is done, and the heavy rains are behind us, thoughts turn back to the hunt. The heavy rain system that lashed a lot of Ontario and western Quebec left a great deal of flooding. Fortunately, not as much here, but the rivers and lakes had been dangerously high, making any collecting near them too dangerous.
But as it is the long weekend, Deb and I got out to Arkona for a five hour hunt. Overall, not a hunt that bagged the best specimens, but we weren't skunked either.
This is the north bank. The photo does not show the proper scale for the bench I worked out. It was already started by someone else, but I was able to lever out two enormous slabs weighing maybe 300-400lbs each. The slabs were partially covered by overburden, so I underestimated their size until I started seeing a crack. But with a lot of grunting and levering with the pry bar, I freed them and rolled them down the hill to be worked on.
Anyone who has worked the Widder shale before knows all too well that one has to go almost quite literally through tons of it to find a full Greenops. Instead, hundreds of moulted bits are quite plentiful.
There are layers in the Widder almost entirely dominate by spirifer brachiopods, but they are trilobite-poor.
Patience and a lot of hammer blows / rock busting can be rewarded. I was able to call first blood on a likely near-complete Greenops widderensis after a few hours working the slabs. Sadly, this one is tucked in the matrix (but can be worked out) and is missing a chunk of its right cephalon.
But it seemed a pretty good day for nautiloids. Pictured above are three Michelinoceras sp.
This one may be a bit more of a challenge to make out, but if you look closely you can see the spiral shape, with a bit of the texture showing in the upper left (the brassy, pyritized stuff). This would be a Goniatites, and a fairly large one for this strata.
And last up: Deb found her complete Greenops (also tucked in matrix, but in better shape than the one I found). On the right is another semi-inflated pyritized Michelinoceras that I'll have to chip out of the rock.
Pictured above is a before and after picture of the nautiloid I found, prepped with a Dremel. Came out fairly well, but this is as far as I dare to take it using an engraver. One day, air scribes and compressors will be needed!
So that's about the long and short of the five hour Arkona trip. Below are some other odds and sods:
Paid a visit to my local rock shop run by two very nice folks. I picked up these two Flexicalymene ouzregui (Ordovician) from Morocco's Anti-Atlas mountains.
A busy brach hash plate from the Bois Blanc Fm fill out in my back nine.
Nice big brach + impression from the same area.
And lastly, another example of Anchiopsis anchiops - pygidium missing its pygidial spike. Lower right I suspect is just a worn and partially buried Eldredgeops rana. Below is a close-up of the Anchiops with some diagrammatic details provided by our Fossil Forum's resident trilobite expert, Scott. "Anchee," as I will call it, is a dalmanitid trilobite, and the way to tell it is by such an incomplete specimen would be the incised axial rings, shown by the arrows in the re-cropped photo below:
I've been meaning to photograph some of the great stuff my fossil comrade from Connecticut, Tim, kindly gave me after our big dig in Penn Dixie
First up on the top left are specimens of the Devonian gastropod, Glyptotomariz retispiralede collected from Deep Springs Road, Earlville NY. To the top right is another from the same area, Grammysoidea arcuata. On the lower left are Bembexia sp. gastropods from Morrisville, NY. To the bottom right from Deep Springs Road is Paleozygopleura hamiltonensis
These lovely fish plates are Redfieldius gracilis from the Shuttle Meadow Fm (Jurassic).
These ferns come at a premium now, as they were collected at St Clair, PA where there is no permitted collecting at the site anymore.
The lighting and the faint impressions these generally leave may make this harder to make out, but these are partials and pieces of the fish, Diplurus newarki - a fish my comrade Tim has been studying and collecting for 20 years.
These are coprolites. Yes, fossilized poop. On the left is a coprolite (likely a reptile extruded this one) from the Triassic, while the ones on the right are from the Jurassic. We can learn a lot from studying coprolites, such as diet and environment.
I also have a few pieces of Otozamites latior that do not photograph well. Tim was also kind enough to provide me with two trilobite specimens I did not have (see last blog post).
Shifting gears in the same post, I took a trip to my local honey hole and was entirely skunked. At the very least, I got to be within 7-8 feet of a fairly trusting and majestic bird. I apologize for the poor pixel quality - I only had my iPod with me at the time, and I needed to zoom in a bit as it would have flown away had I approached any closer:
So the afternoon was spent at Hungry Hollow where I collected small bits. The river was too dangerous after all the rainfall to risk going to the usual spots, so we hunkered down in the south pit and plucked weathered stuff out of the Arkona Fm mud-shale. Although I have tons of this stuff, I can't help but to continue picking it up. You never know when someone might want some of it as a gift.
Typical fare from Arkona: an array of crinoid bits, some Aulopora, brachs, Microcyclus ("button coral"), tons of Bactrites, and on the right edge in descending order of size, Tornoceras (or is it Goniatites? - I'm not a cephalopod guy).
Below are some microscope shots to bring out details at 75x: