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turtlefoot

Partial fossil, maybe gastropod, cephlapod, chiton - too far gone to tell?

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turtlefoot

Hey All,

 

I don't know if there is even enough of a fossil here to identify.  I am nowhere near good enough to give a real good guess.  First thought was either a small piece of a cephlapod or chiton.  If it is a gastropod, it is a type that I have never found before.  It was found on the side of a dry creek bed near Willow Springs, Missouri, USA in an Ordovician Formation.  The remnant that remains measures 13mm wide by 15mm long.  The bed the fossil remnant is laying is measures 24mm long.  There is an indented type of division going horizontally across the fossil.  It does not go all the way through to make the remnant two separates segments though (just an indentation type of division line).  Other fossils in the same rock include gastropods, a brachiopod and what looks like a very worn rugose coral.  If anyone can give me a probably identification, I would appreciate it.

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turtlefoot
15 minutes ago, Coco said:

Hi,

 

Chitons have always 8 separate plates https://www.markd60.com/modern-day-dinosaurs/ (2nd pic)

 

Coco

I wasn't sure about that.  This is definitely a single piece and the division does not give it a separate plate.  Thanks for the help with the info on chitons.

 

Doug

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Rockwood

Part of a trilobite pygidium or cephalon internal mold may be worth consideration.

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turtlefoot
13 hours ago, Rockwood said:

Part of a trilobite pygidium or cephalon internal mold may be worth consideration.

Looking at some images online, the trilobite pygidium looks the closest so far.  I really appreciate your help.

 

Doug

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