We've been busy in the box a bit the last while, but nothing ready for showtime just as yet. For now, we went to the London rock show and I couldn't resist these pieces prepped by Mike of Stormbed Paleontological. And, yeah, we picked up a few shiny crystals along the way -- some celestite and two gnarly quartz points. We even got an early bird free gift, and we both went for the pyrite chunks. :D

A disarticulated Acernaspis orestes. I had the option to get a single articulated complete for not much more money, but this one kind of reached out to me. Silurian of Anticosti Island. 

A Cyphaspis eberhardiei from Morocco. Just some very minor and tasteful resto, and not where you might think it would be. Fantastic prep by Mike. This is a cabinet sitter in the trilobitarium. That long axial spike is not only a crazy challenge to prep, but there is no resto on it, either. 

If there is time before holidays to get in the box (unlikely), I'll post some fresh preps. Otherwise, it may be the season is over and time to spend the winter doing the wintry prep and planning thing.

What a year it has been, although it doesn't mean we are downing tools just as yet, leaving open the possibility of going for another little dig or two. But, with scarcely four-ish weeks until a two week reef diving adventure somewhere hot, and the grading tsunami that precedes it, and the weather being "iffy" at best (with snow in the forecast tomorrow!), the season may be called on account of usual circumstances.

My arms are still vibrating after doing some serious trim work with the rock saw to get some pieces ready for prep. There has been so many firsts both in and out of the field that it is a challenge to summarize them all.

Perhaps among the most notable firsts would be this being Angela's first full fossil season after she got a taste for it last November. Of course, no doubt our visit to the ROM's Dawn of Life gallery exhibit whetted her appetite all the more. But it wasn't as though this was her first rodeo either given that she had been a crystal and mineral hound going back decades, so the old fashioned prospecting and field time were pretty familiar terrain for her, although fossil hounding is a whole other kettle of fish as she continues to read the rocks to understand lithology, stratigraphy, faunal associations, and the like. 

And, boy, the places we did go! I would be out of pins fairly quickly if I had to drop those on a map. We found new spots, as well as quite a few dusters. Part of the prospecting process, but we had the time, wheels, and inclination. We pored over satellite maps, dug into the ancient literature, and plotted our travels to optimize and maximize our visits. We went north, south, and east on numerous adventures. In all, 59 days in the field is none too shabby

...But it all began in the winter. Apart from the usual plotting and dreaming, planning and scheming, it was time to make some household amendments. The first was the far overdue fire risk that was my old electrical system. I finally have a breaker panel, and while the electricians were at it, why not foreground the creation of the brand new shared lab to get it out of its afterthought tiny and tight corner shielded away by some plastic sheets like this was ET? So we worked steadily to clear out the storage room, and it was ready to get wired up with new receptacles to allow more than enough juice to run tons of equipment. And then some added flourishes like pot lights. Wiring also got fixed in the laundry room where the repository sits, so "let there be light!" All the while, we were doing radical renos of each room in the house to make it a home, and to accommodate Angela's treasures, too. There is now a library/studio, a revamped living room/museum, and even the dining room with a fresh coat of paint and reorganization. But here is the lab pics again with our tools on peg boards:

I slipped in a pic of the new panel, too. Plenty of amperage to accommodate the shop vac and compressor, and everything has its place. The other upshot now is that she is keen on prep, which means we have to take turns with the equipment. And she has done some marvellous work this year, but more on that later.

The other improvement pre-season was housing the trilobite collection. I splurged on a wall-sized triple display case with lighting, baked up labels, and it now sits beautifully in our space as the main attraction. We kept the small case for other things, but it was well overdue to get all my prize trilobites off coffee tables and the floor! Snaps of the process and the result. Took us several days to put the "trilobitarium" all together: 

And to think we also smuggled in a week to Varadero while we were at it! A nice touch was finally freeing my trilobite illustrations from their binder and putting them up for display along the top. The trilobite texts are neatly in the centre spot alongside overflow items. Duplicates are in the drawers, alongside other related stuff. 

And then it was on to the dining room. Ever since a plumbing issue where they had to poke holes in walls to narrow down the problem, it was time to tidy that up. The "bar" cabinet has now been put in the basement, and I scored a shelving unit that miraculously fit the recessed area perfectly... for like $60! When does that happen? Meant to be. But it would do no one any favours if we didn't do a fresh paint job with a much lighter tone, and replace the oversized chandelier lighting for something with much higher lumens that was right-sized for the space. As Angela likes shiny things, we went for a cute little sparkly dome. I also got to learn how to do electrical work to repair some of the perplexing shortcuts and mistakes of previous folks past. It all got topped off with an aesthetic arrangement of my doodles along the blank wall. And, yes, the pencils have been pushing this year after a hiatus, but more on that one later as well. Some snaps:

I don't have any recent shots of the ever-changing shelving unit, so likely these are stale-dated. We also mounted a small case on the wall with esoteric treasures, including some minerals/crystals. There are also a lot of plants with UV lights not photographed yet dotting the landscape. There is a cabinet just of our sea junk. Ans apart from two decorative giant sea biscuits I found in Cuba (one from each visit), the coffee table is miraculously clear. Another first, ha! 

We're not even in the fossil season proper yet. We also had to create a garden, a new circular picnic table was added to our back nine (and there are approved plans for growing in the common area next year that we are excited about). My organization tornado of a lady has ensured everything is in its right place. It was the kick in the ass I needed. 

So what about season '25? As I said, 59 field days is pretty good. Of course, my record during "the 'rona" was 82 and 69 over the two years, although we smuggled in more than just fossils on our adventures. Two trips to Cuba, a lovely time in Niagara Falls with the Bird Kingdom tossed in, site-seeing in Ottawa, Quebec City, Montreal, Temiskaming, Manitoulin Island, Sudbury, you name it. Museums galore, too. We even did a mineral dig in Quadeville at a beryl pit, and there are dim designs on a run to Thunder Bay and beyond for some nice quartz/amethyst points. Birds, butterflies, beaches, and boisterous punk shows? Covered! Overall, I think we covered a zillion miles of blacktop and stayed in accommodations that ran the spectrum from desolate to deluxe. Through it all, even when I was gunning to go before the crack o' dawn, my lover and field comrade was raring to go -- even when we knew the odds were stacked against us, even when we struck out, or otherwise made out like bandits. Some of the sites we visited were a sad ending to a legacy where they are tapped out forever. And for each incredible find we made, a tobacco offering to the universe in having a smoke to appreciate it.

Trilobites-wise, I encountered 63 distinct species in the field, which is an all-time record. Almost all of those from Ontario as I continue scribbling the revision book. Of those, only four of them were new to my Ontario hoard, but that is expected given that I have found almost all of them at this point. Although we did some Devonian work this season, I did much less than in previous years. Instead, we focused on farther flung localities in Ontario's Ordovician and some Silurian. Still, just about all the usual Devonian suspects were found. I also got to go collecting with some of my other field comrade buddies, sometimes with Angela, sometimes without. A big shout-out to Kevin, Matt, and Marc for the good times!

And some of my new acquisitions were done with the credit card to fill some of my trilobitic gaps. The usual goodies from Morocco, Bolivia, and China were added to the trilobitarium. 

The season began early-ish. On March 9th, we hit the nearby Devonian in Oxford County when there was still snow on the ground. Doing some local haunts in the damnable Devonian was also kind of training wheels for Angela to have her appreciate the much more generous Ordovician that Ontario has to offer. A week later, the snow was gone and I was out in a tank top, such is March weather. It wouldn't be until April 3 that we hit the Ordovician, and hit that almost exclusively until a brief spell in the Silurian in early July. It may be fitting and closing the loop that we might have ended this season going back one last time to the first site we visited to kick off the season. 

"But what didja find?" I can hear the chorus asking. I haven't even photographed everything yet! I have certainly done some prep, but have a long queue. I found some treasures, as did Angela. To her credit and luck, she found a relatively complete Cybeloides! We found complete Pseudogygites​ at multiple locations, all of them new spots. We also bookmarked several sites for followup for season 2026. How about a photo roll of acquisitions, found and purchased? Too many images to share, so it will have to be in batches: 

That just covers a short span, all raw from the field. Not everything was brought home. And now for some more: 

What was all that? Well, amidst the clutter of that slideshow are complete Pseudos, but also ridiculously abundant multi-plates of cheirurids, Calyptaulax, giant calcite chunks, perhaps the only ever discovered (headless) Bumastoides from Temiskaming's Ordovician, a Terataspis part from Moosonee, and sundry goodies. And some more:

Some highlights there would be the rare AF Flexi from the Billings Fm shale, and the Cryptolithus ventral cephalon from the Bobcaygeon Fm. One more dollop:

And so, yes, there is even a Dolichoharpes in that mix. An undescribed erratencrinurid from Ottawa, and plenty of Moroccan goodness.

We found even more stuff than presented here. Angela is the shutterbug between us, so I mostly hand off those duties to her. That said, some field shots as prove of life are warranted. Any of the quarries we visited was done with permission (and it was great to chat with those who do the quarry work on the daily to geek out on formations!). Our immense gratitude to the quarry folks who gave us access as we complied religiously to full PPE and safety protocols. And, yes, the other qualify of life improvement has been the addition of the rock saw. It does come in handy!

Preparation is the other side of the collecting coin. Some good prep has been done by both of us this year. Even scraps I left for dead turned out to be complete treasures when Angela gave them a second chance. In time, she will outrank me in the lab! Some prep jobs from finds this year, and catch-up from previous years including some echinoderms:

The edrios were a real treat, and it was great to prep some of Angela's fantastic finds, too. Still so much to do, but the collecting part of the season is really about fresh supply, of which we have a lot more now. Thankfully, I have a lab partner now!

In terms of doodles, inspired and encouraged by Angela, I took to the pencils again. I'm currently working on a complicated Bufoceraurus which may or may not get done this year. But some finishing eye candy for my amateurish attempts at realism coming right up!

So that just about sums up the season, although I am neglecting a lot of details and other finds here. 2025 definitely ranks as one of the best years in the field, with the addition of a prep and field comrade as a lover making it unparalleled. 

Obviously, we remain shtum on our precise coordinates with respect to sites that we quite actively prospected and spent the time finding. Not even some of my closest field comrades know. As sites are rarer over the years, places tapped out, less access, etc., we have no choice but to play our cards close to our vest. I have been fortunate this year to be introduced to sites others have found under strict cone of confidentiality, and I trade in turn. There is an ethics and etiquette to this that my Angela has quickly learned. 

It's been one helluva season. Onward to 2026 to put even this year to shade, if that is even possible. I left enough dangling ends to ensure we get going right away once the snows recede! 

Yes, it is passing odd that any of this year's field visits would actually be indexed on finding... minerals, but it was a fun and fascinating visit. Given Angela's long experience on the crystal and mineral side of the geologic hammer, we've been keeping this one in our back pocket for the right opportunity. And so we made the five hour drive to Quadeville's beryl pit.

A perfectly sunny, albeit cooler, autumn day was the nice backdrop to our time at the old open pit mine. It began by driving into the small town of Quadeville in Renfrew County to purchase a "trespass permit" at $20 per person from the (only) general store. The permit entitles one to make one trip into the old mine and to carry out whatever will fill a bucket or backpack. 

This location was being mined back in the 1930s and 40s for beryl. Once parked, it is about a ten minute walk into the mine proper where one is greeted by the information sign. Sadly, some likely unlucky digger absconded with some of the pieces posted for display. 

A photo of the pit itself. 
There are a number of places and approaches here. Some people dig right into the walls above the pegmatite layer, others crack rocks in the three dump piles, and still others actually dig into the slump piles with a hand rake and shovel to find crystals. Not one method is better than any other. 

Here's a view of the dump piles looking toward the open mine. We had the whole place to ourselves until three others arrived for a very short dig in the late afternoon. A lot of people and rock clubs come out in the springtime. 

Some parts of the ground are quite literally littered with abundant smoky quartz chunks. It would be passing rare to encounter any of these terminating as points given the conditions of the rock's formative process. Many people come here to find gem quality crystals, although they are far from common.

Just a quick, small sample of our finds. Not shown are the handfuls of black shorl tourmaline pieces. There is quite the variety to still be found despite the number of annual visitors. Clockwise from the top left: a typical beryl, a small book of muscovite mica, and the reddish crystals are a toss-up between cranberry fluorite and hessonite. We may have some chunks of plagioclase, euxenite, and other goodies that still need to be photographed. It should be noted that rocks from this location are mildly radioactive, but harvesting a few key samples is fairly negligible in terms of health.

And then it was getting on in the day for us to get back on the road to our next destination. Threading in this mineral plan was a great idea, and we are plotting a possible long journey out to prospects in Thunder Bay for 2026. 

Beryl Pit Quick Tips:
* Do not enter without obtaining a permit
* There is no "right" place to dig or break rock; it's all good stuff. Pick a spot and have at it
* Tools: a mineral hammer, crack hammer, hand rake, small shovel
* Terrain is fairly accessible, so just a hiking shoe is good enough
* No wheelbarrows, power tools, or multiple in and out trips with tons of rocks
* Aim for variety and good representative samples; no need to hoard everything
* The mine is refreshed every year or so. 
* Manage expectations: giant honking gem-quality beryls are rare for a reason
* Don't litter

______

The fossil season is winding down, but you'll still see goons like me in the field going out a few more times before it is time to down tools on a fascinating and whiplash tour of localities all over the map. There is still a few weeks left on the clock before the end of season wrap-up.

As the season is not quite over, the 2025 wrap-up with its many surprises will likely drop in November. For now, consider this a few musings from site visits and prospects in Ontario's Devonian.

The Bois Blanc Formation "Experience"

The Bois Blanc Formation (BBF) outcrops as a thin band from Fort Erie, up through Haldimand County, Innerkip and terminating north of Goderich on Ontario's "west coast." As a very large unit that thickens considerably in its northwesterly bearing, it is a complex and variable unit. The lowermost portion of the BBF overlies, in some areas mostly at its southern end, the Oriskany sands which are composed of large sand grains and cobbles. Fossils are uncommon in the Oriskany, although we start seeing an upward deepening sequence that may contain tidal wash remains or brachiopods and occasional moulted fragments of the trilobite Anchiopsis anchiops.

In the areas around Byng, Ontario, the lowermost BBF has a blank, fissile shale unit that represents silt-depositional conditions that were seemingly unsuited to the establishment of any significant evidence of marine life.

The "second start" of the BBF proper generally can be typified by the greenish hue imparted by the presence of glauconite. Platy shale-limestone layers present an increasing abundance of brachiopods (the diversity of which are fairly characteristic of the BBF in several of its discrete units), and moulted fragments of Anchiopsis.  These will generally present glauconization. 

Overlying this unit presents a slight marine deepening where harder limestones indicate a different depositional pattern of high energy conditions. Therein, one can be presented with incredibly hard matrix filled with marine fossil fragments, particularly of the trilobites Burtonops and some proetids. Brachiopod diversity remains fairly stable, and coral reef development is beginning in earnest.

Thus begins a whole new sequence within the unit as the reef further establishes. Thick bloc horizons of chert, varying in colour from white, grey, black, and bluish tinged varieties, occupy up to 80% or more of the package, possibly indicative of siliceous sponges. The corals themselves, both rugose and tabulate, appear in massive profusion, at some intervals being entirely composed of chert. Some carbonate shale partings separate these giant cherty blocs. The coral-dominant layers also share space with occasional giant stromatoporoid masses, brachiopods, gastropods, rostroconchs, and fragmentary trilobites, which may include Burtonops, Anchiopsis, Crassiproetus, Pseudodechenella, and the large Calymene platys which represents the last hurrah of the calymenids. This is well represented in the sequences found in outcrops in Haldimand County where the underlying units may also be sandy and largely devoid of corals yet present brachiopod diversity, overlain by a hard dolostone-limestone matrix containing tidal wash fragments.

Of note within the unit are occasionally hummocky, undulating layers of brown, grey, and blue partings composed of massive corals and fragments of the giant lichid, Terataspis grandis. The latter may present as cross sections, or lodged in hard chert, with a dark brown to black shell. These are fairly typical of discrete, recurring sequences around Haldimand County, with reports of similar around Port Colburne.

As we proceed up the BBF, coral dominance continues, although the matrix may take on a more orange-brown sandy texture around Haldimand County, or a regressive state of tidal wash as found in the earlier sequences in the Port Colburne area. On the base of the floor of the former quarry which is now the Wainfleet Conservation Area, one can see large domal coral structures with pulses of other marine fragments, including the trilobites (by order of occurrence) Burtonops, Anchiopsis, Crassiproetus, Calymene. At Wainfleet, this represents the uppermost extent of the BBF until the Onandaga sequence begins.

The Onandaga Formation Wedge

There is some fuzziness in assigning the Onandaga Formation (OF) in Ontario, as not all the literature agrees in its placement or even presence in Ontario stratigraphy. Although it appears firmly established in New York stratigraphy, age-equivalency remains problematic. Nevertheless, the OF shares some of the characteristics of the underlying BBF in terms of reefal environment, although there is some intervals in the mid to upper layers representing tidal stormbeds composed of numerous crinoid ossicles and bryozoans (best seen at the Wainfleet CA). Trilobites may be scarce to absent in these units. As one proceeds northwest, the OF appears to thin and disappear, possibly accounting for a disconformity between the BBF and the Amherstburg Formation which will kick off the Detroit River Group package. 

A Tale of Two Amherstburg Formations

The Amherstburg Formation (AF) is typically a light to dark brown dolostone with dense layers of small rugose colonial corals, occasionally black algal mats (mixed with calcite vugs around the Zorra area), and even lighter beige (weathering light grey) containing silicified and oxidized marine fossil fragments (brachiopods, large rostroconchs, bryozoans, proetid trilobites, and three species of lichid). Some of the layers may be a muddy dark brown mix of medium sized toppled coral and abundant bryozoans of the stick and fenestrate type). At the Zorra location, the upper units will contain a sandier series containing small Conocardium rostroconchs and low-spired gastropod steinkerns. Chert nodules can be quite abundant at some intervals, ranging from black to white, and varying in size and shape. 

The outlier would be the type locality of the Formosa Reef mounds located just north of the town of Formosa. These mounds are a diagenetically reworked crinoidal packstone with an orange to beige matrix, containing numerous proetid trilobite fragments (including a lichid), small rostoconchs, impressive gastropods, brachiopods, nautiloids (orthoconic and rare cyrticonic types), and bivalves -- all of which are steinkerns with partial calcitic recrystallization. Atop the mounts are subaerial stromatoporoid masses. 

The gradation into the overlying Lucas Formation is not distinct, and so drawing a line between the two is not clear.

The Lucas Formation

The lowermost section of the Lucas Formation is lithologically similar to the uppermost section of the AF. Through a gradual sequence change, the purity of the limestone increases. Stromatoporoid "footballs" are quite common, as are some gastropod steinkerns and small brachiopods in the platy layers. Proceeding up the unit, fossils become scarce. The uppermost unit as can be seen in the Ingersoll area has abundant thin coral thickets, low spired gastropods, but little else. Sandwiched between the lowest and highest sections is a largely blank limestone with a purity that makes it suitable for extraction and placement in kilns to produce lime products.

A chalky-cherty light beige-grey limestone mix can be found at various locations near Elgin County, but these are largely devoid of much fossils apart from occasional brachiopods, bryozoans, or corals. The white-grey chert lends the matrix a mottled appearance, dominating up to 50% of the matrix. 

The Dundee Formation

Much like the BBF, the Dundee Formation (DF) is highly variable throughout the stratigraphic column as well as laterally in terms of occasionally abrupt facies changes. Of all the Devonian units of Ontario, it is by far the most present, occupying the immediate bedrock expanse of the vast bulk of southwestern Ontario. Just about every matrix type from shale, limestone, dolostone, crinoidal packstone, wackestone mixes, etc., are present. Much of the armour stone for landscaping is derived from the thick dolostone blocs containing large spirifers, silicified rugose and tabulate corals, abundant rostroconchs, and other brachiopod types. Less erosion resistant sections are suitable choice for fill under bridges or stormwater ponds. The DF has an impressive brachiopod diversity, although one section is entirely dominated by beds of profuse Devonochonetes that present white, pink, or vermilion. Some of the nearshore tidal facies may present a yellowish-orange-beige colour, containing rare trilobites such as Odontocephalus and Coronura amidst giant gastropods and brachiopods, as well as entire beds of large rostroconchs. 

In some the shalier or even hard small-grained limestones, Eldredgeops (some of which can approach impressive sizes) can be found. At still other intervals are platy horizons containing abundent Leptaena with the occasional Trypaulites. At yet another interval is a storm-tossed, diagenetically reworked unit containing brownish-purple corals, rostronconchs, crinoidal pulses, bryozoans, proetid trilobites, and again Trypaulites. 

Much of the DF rocks that are used for fill and landscaping have their origin from the town of St Marys where it is the sight of a working quarry and a nearby former quarry that was decommissioned and turned into a local swimming hole. 

The Other Units, and Prospecting

There is abundant literature on the Arkona and Widder formation that need not be discussed here, nor the Marcellus shales. Prospecting the stratigraphic span from the BBF to DF has occupied a number of years, and this year has been no different. Attempting to render some order to the units vertically and horizontally can be a challenge for myriad reasons, but some key steps have been taken this year to untangle the rocky mess.

What I started in May was interrupted by a lot of time in the field, but I finally got this critter finished. This is mostly based on the several parts I've collected over the years, and represents the southern type. Terataspis grandis:

There's been quite a few hunts since last I updated this spot, but disclosure is an end of season thing. So, for now, some echinoderm preps. I'm not as confident with doing them as they are a bit outside of my trilobite wheelhouse, but these seemed to have turned out alright. First up, Carabocrinus...

A damaged ​Pleurocystites squamosa:

A pair of puffy Edrioaster levis:

We had a pretty good blowout weekend in southern Ontario, with tons of great material. Three weekends+ in a row have been pretty good to us, and there is so much more to go. That said, the one missing tool in my arsenal was my own rock saw. Picked it up tonight and it will be a real game changer for some of our upcoming trips. This lovely T400 Stihl two-stroke beauty is going to slice through some rock. A 12" blade should do the trick. 

As for the finds, hang tight. There are some beauties queued up in the lab. Not much time to spend there given we are road-bound yet again very soon.

As I work ever steadily and diligently on the full Ontario trilobites revision book, part of my attention also turns to "Big Terry," aka Terataspis grandis. 

I still maintain that there are some notable morphological differences between the northern and southern variants, but I humbly stop short of declaring these must be different species. I have to keep in mind that lichids particularly have a lot of phenotypical variation. That said, there are some intriguing differences. I have collected nearly 100 significant fragments of this giant trilobite, and have taken to trying my hand at the visual reconstruction (keeping in mind that this is a slow process given all the field time I am clocking!). The progress thus far:

This is built solely on the parts I have from the "southern" variant. The "northern" variant is fairly well known if one simply visits the ROM. That said, the differences in terms of the two come down to the higher prominence of the tuberculate structure in the "southern" variant. 

Fortunately, in a way, I have a number of fragments from Moosonee that will require proper prep lab preparation to do glue-downs. Here is an internal mould part of one I have here:

The other side contains the shell and the spines. I have a box of them, including much of the cranidia. Having both northern and southern poles in my collection is quite exciting (to me). Once I have the initial reconstruction complete, I will show the result along with the key fragments I used to build it. That will be a project for a slower part of the season.

It seems that just as soon as I got back from the last trip this past weekend, I'm barely unpacked and about to launch on another. The fossil dig itinerary is filling up fast, and it will be a challenge to shoehorn it all in before it is back to riding the lectern in September. I've made some interesting field discoveries I'm not quite ready to post yet, and also acquired a few quite exciting trilobite specimens I haven't had a chance to photograph -- that is how busy things are as of late. And that is not a bad thing. There is a lot more blood and treasure to spend before the great trilobite hunt of 2025 is over. I can safely say I've encountered about 52 distinct species of the critters so far this year, breaking last year's record of 51.

So, for now, just another little bucket list item crossed off the list. I've long eyed getting one of these Moroccan lichids but never pulled the trigger. May I present the wee lichid from the Devonian, Acanthopyge ?estevei​:

Ok, enough out of me. Time to pack the gear, get in the car, and do some farflung rock-bothering! On a personal note, it is great to hear from so many eager collectors who have bumped into this wee blog as of late; I do enjoy talking shop about the bugs.

CORRECTION: The trilobite is actually Branikarges bassei on account of some taxonomic switching around. Allart van Viersen reassigned the genus of Acanthopyge to Huginarges, but this was subsequently rejected by Basse and Müller to be included in the genus of Branikarges. My undying gratitude to S. Morrison for his correction!

Key references of note: :
1. Basse, M., Müller, P. 2023. Trilobiten aus dem Leun-Schiefer und Leun-Kalk von Löhnberg und Leun in der zentralen Lahn-Mulde in Hessen (Grenzbereich Unter-/Mitteldevon, Rheinisches Massiv, Varisziden). [Trilobites from the Leun Shale and Leun Limestone of Löhnberg and Leun Villages in the Central Lahn Syncline in Hesse (Lower/Middle Devonian Boundary, Rhenish Massif, Variscides).] Mainzer Naturwissenschaftliches Archiv Beiheft, 37:1-211

​2. Van Viersen, A.P. 2021
Systematics of Devonian Trochurine Trilobites (Lichidae).
Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 300(2):175-187

I'll be out in the field quite a lot, so just a quickie post. Picked this up recently, a bit of a bucket list item. Tasteful resto, 13.5cm long. Drotops megalomanicus​.