Unknown Fossils From Flag Ponds Maryland

[Codydunmire]

I found these two things a few months ago and forgot about them in a zip lock bag until just now. One side is serrated about halfway down the rest of the sides seem smooth

[Miocene_Mason]

Fish jaw piece I believe.

[Jazfossilator]

Neat find! Can see some teeth still in there

[HoppeHunting]

Possibly a worn ray tail spine/barb section. The size seems about right. These are uncommon finds at the Calvert Cliffs. 

[Codydunmire]

4 hours ago, HoppeHunting said:

Possibly a worn ray tail spine/barb section. The size seems about right. These are uncommon finds at the Calvert Cliffs. 

I don't think it's a ray tail spine because I have found a few of those at flag ponds and know what they usually look like

[HoppeHunting]

4 hours ago, Codydunmire said:

I don't think it's a ray tail spine because I have found a few of those at flag ponds and know what they usually look like

That's why I think it may be a worn barb. Fossils can look quite different when they've been worn down. This can be quite deceiving and make the identification process frustrating; I've had my fair share of worn down sharks teeth that I can't pinpoint to a species due to erosion. To me, it looks like a broken and worn down ray barb, but I could be wrong. 

[Mike from North Queensland]

I would go with fish as the photo shows a curve that you would not expect in a barb and secondly the teeth look to protrude straight out rather than slope back.

 

 

Mike

[Miocene_Mason]

The reason I’m thinking jaw is because it looks to have concave bits in between each raised bit, can you confirm this @Codydunmire?

[ynot]

9 minutes ago, Mike from North Queensland said:

I would go with fish as the photo shows a curve that you would not expect in a barb and secondly the teeth look to protrude straight out rather than slope back.

 

 

Mike

I agree.

[Codydunmire]

43 minutes ago, WhodamanHD said:

The reason I’m thinking jaw is because it looks to have concave bits in between each raised bit, can you confirm this @Codydunmire?

From what i can tell it looks like there is a concave spot right between each raised spot these images might show it a little better. 

[Miocene_Mason]

42 minutes ago, Codydunmire said:

From what i can tell it looks like there is a concave spot right between each raised spot these images might show it a little better. 

Yeah, that makes me confident we’ve got a fish jaw here.

[Codydunmire]

4 minutes ago, WhodamanHD said:

Yeah, that makes me confident we’ve got a fish jaw here.

Cool thank you very much

[Al Dente]

12 hours ago, Codydunmire said:

From what i can tell it looks like there is a concave spot right between each raised spot these images might show it a little better. 

 

 

This more recent photo looks less bony and more shelly than the previous photos. I'm thinking these are toothed hinges from some type of bivalve. Doesn't really look like a fish jaw to me.

[Carl]

I think I have to agree with Al Dente. There's something about that sheen, color, and flaking that is more mollusky than vertebratey.