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Some new finds from an exploratory trip to Southern Illinois and Missouri. Originally I was focusing on Silurian rocks, but wasn't having much luck.

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Mississippian fossils

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Kaskia chesterensis

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Richmondian stage fossils

Missouri 

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Conulariid impression.

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Very beautiful magnified. Haven't had much time yet to look up names.

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Not sure what this species is. Very small, just a few mm.

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Thanks for looking!

Edited by aek
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Fossildude19

Very cool finds! :Smiling:

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piranha
3 hours ago, aek said:

Mississippian fossils Ameura                 Not sure what this species is. Very small, just a few mm.

IMG_20210418_174434_618.thumb.jpg.bc01ca157acc1d704a10cc55da3dc7b8.jpg  IMG_20210418_174434_666.jpg.455612d3baac9b608003fe38febb3239.jpg  20210418_002110.jpg.d9f252ead624e36f40a5332970c58b0c.jpg  20210418_124020.jpg.9b0681aa5eb6ad9c3d7d38b5a26a9c96.jpg

 

Ameura is a Pennsylvanian-Permian genus.  Instead check Brezinski 2008 for the best match of this Kaskia sp.

 

The small Ordovician trilobites are Ampyxina bellatula. Congrats on all the great finds! happy0144.gif

 

Brezinski, D.K. 1986
An Opportunistic Upper Ordovician Trilobite Assemblage from Missouri.

Lethaia, 19(4):315-325

 

Brezinski, D.K. 2008
Phylogenetics, Systematics, Paleoecology, and Evolution of the Trilobite Genera Paladin and Kaskia from the United States.

Journal of Paleontology, 82(3):511-527  

 

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piranha

After further deliberation I would label it Kaskia chesterensis.  Brezinski also describes K. rosei from Illinois, but that is a poorly defined species that might be synonymous with K. chesterensis. Attached for comparison is K. chesterensis from the Ridenhower Shale near Millstadt, Illinois. mail?url=http%3A%2F%2Fmail.yimg.com%2Fok%2Fu%2Fassets%2Fimg%2Femoticons%2Femo71.gif&t=1618802048&ymreqid=23281213-8dc1-3cff-1c60-8000be01c500&sig=Qf8rhQM6Q68y963ubNPdcQ--~D

 

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connorp

That's a really nice Kaskia, congrats.

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