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SharkySarah

Any idea what these are?

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SharkySarah

Going through my collection and trying to put a name to these. All from the Calvert formation. Please note the numbers on the paper identify the different teeth. 

7D44C170-5596-4896-B7A9-366D80281EFA.jpeg

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EF2F9328-47D9-4268-8F7C-B06B748148E7.jpeg

E596A462-760D-44F4-AE86-CB77FEBF6BEF.jpeg

0ACE7ECD-C7A2-414D-A701-5E3AD9BFA527.jpeg

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D1C4F9E4-496C-472A-B0C7-108B5631E52B.jpeg

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1C3D77CC-4F6F-4A81-A06A-D6D0BA2103AA.jpeg

FD1AB9A8-B41B-4E97-97B1-4A5E7C00139D.jpeg

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PaleoNoel

Aside from 17 which is Physogaleus contortus, the rest appear to be Carcharhinus sp. (one of the many species of requiem sharks), although the unserrated triangular ones could be from Lemon sharks (Negaprion) (26 & 25 maybe). 24 looks like a posterior tooth of some variety, maybe carcharhinus as well  but I'm not sure.

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bthemoose

I would say 24 also looks like Physogaleus contortus with most of the crown broken off.

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fossilsonwheels

It can be very tricky to ID Carcharhinus teeth, at least for me. Close ups and a good size reference help. 

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