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Showing results for tags 'deltodus'.
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Over the past year, I've become fascinated with the often bizarre fish and sharks of the Pennsylvanian. Fortunately, my home state of Illinois is a great place to hunt for such fossils. I've shared several of these in other posts before, but wanted to put everything together in one thread. Probably won't have much to post for a few months after this, but once summer rolls around, I should hopefully have plenty of new finds to share. I would say there are three major settings in which you can find fish fossils in Illinois: Mazon Creek, black shales, and limestone. I have not had luc
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I know very little about shark teeth. I found this one a while back in Pennsylvanian (Desmoinesian) shale in northeastern Oklahoma. I am speculating this may be deltodus only because I see a nearly identical tooth labeled as deltodus on another website. The fossil is very thin (too thin to photograph the edges). Besides confirming the taxonomy, can anyone tell me which surface of the tooth is shown in Side A? Finally, would you say Side B is mainly matrix (other than the edges)? I think matrix is showing through the cracks on Side A, and that may be the only thing holding the fossil together.
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From the album: Pennsylvanian Fossils of Northeast Oklahoma
This is one of the crushing teeth of Deltodus, from Pennsylvanian (Desmoinesian) shale in northeastern Oklahoma. This tooth is only about 4 mm thick. Deltodus comprised a genus of cartilaginous fishes in the class Chondrichthyes, subclass Holocephali. Modern day holocephalans include chimaeras.-
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- desmoinesian
- pennsylvanian
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From the album: Chondrichthyan Teeth From The Pennsylvanian Period
One of my favorite specimen! Correct id by Jackson g
