hobbitfeet Posted September 23, 2017 Share Posted September 23, 2017 I found this today on highway MM in eastern Missouri. It's about an inch and a half long that tapers down. It has ridges about every ,5cm and long thin striations that run along it Link to comment Share on other sites More sharing options...
FossilDAWG Posted September 23, 2017 Share Posted September 23, 2017 If it is Ordovician, the combination of ribs encircling the shell and longitudinal striations suggests Gorbyoceras. Nice one. Don 1 Link to comment Share on other sites More sharing options...
Miocene_Mason Posted September 23, 2017 Share Posted September 23, 2017 Don't know the formation reminds me of spyroceras. “...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin Happy hunting, Mason Link to comment Share on other sites More sharing options...
JimB88 Posted September 23, 2017 Share Posted September 23, 2017 Or Monomuchites if its from the Ordovician. Heres some I found. Link to comment Share on other sites More sharing options...
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