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Showing results for tags 'elasmobranch'.
Found 3 results
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From the album: Post Oak Creek
To find denticles, you need to go to the finest grain size. This beautiful one could be shark, but I'm not certain.-
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- microfossil
- sherman
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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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Came across this paper published last year, apologies if it's already posted. Located in the Falcon State of Venezuela the Urumaco formation provides a good look at the Sawfish and other elasmobranch Assemblages of the South Caribbean in the late Miocene, in an area that gets very little notoriety. (A) Sharpnose shark Rhizoprionodon sp., (B) Hammerhead shark Sphyrna cf. zygaena, (C) Bull shark Carcharhinus leucas, (D) “Big tooth” Carcharocles megalodon, (E) Tiger shark Galeocerdo cuvier, (F) Spotted eagle ray Aetobatus cf. narinari, (G) Eagle rayMyliobatis sp., (H) Guitarfish
