As temperatures slide into spring, the semester drawing to a close, I am back out in the field ending my cabin fever. Pictured here are a few finds from one of my nearby honey holes, some of which I've found in the past but did not post pictures of.
Pictured above and in the next two pictures, are pieces of a coral. It has been identified as likely Triassic or Jurassic in origin. How it came to be in a largely Devonian area is a mystery to me!
Here is a bigger chunk of the same coral. The shell type at the top is likely oyster.
This one was found along the Thames River at the university. Initially I thought this might be a transversely placed Megastrophia sp. brachiopod showing only the hinge, but it just doesn't seem to fit. Could it be a worm tube? Seems a bit too straight to be one. A mystery!
Above: a picture of the "riprap hill". Below: typical littoral.
Simple brach hash.
Nothing wow here: a chunk of tabulate coral, two brachs, a worn piece of Aulopora, and a general marine hash.
Worn gastropods. Hormotoma type on the left.
Leptaena sp. brachiopod, red on brown-grey matrix.
Hash plate with trilobite pygidia.
Fragments of two new species of trilobite for me. On the left is a piece of pygidium from Trypaulites calypso, found along the Thames River. According to Ludvigsen (1979), no specimen of this species has been collected in Ontario, although the equivalent strata elsewhere would suggest it should appear. This * might * be the first confirmed find of this species in the Dundee Formation in London (very exciting!). On the right is a partial cephalon impression of Basidechenella sp. to go along with a few of the pygidia that I sometimes pull from this area.
This now brings my trilobite tally to 10: Eldredgeops rana, Greenops widderensis, Greenops boothi, Basidechenella sp., Trypaulites calypso, Flexicalymene ouzregui, Pseudogygites latimarginatus, Triarthrus eatoni, Proetus sp.
This year, if time and travel permit, I hope to add a few more - particularly from the Ordovician. Stay tuned, for I'm returning to Penn Dixie this week for a multi-day dig. For now, here is a pic of me and the missus from last October that the PD folks put up on their website: