Identification Request

[BLT]

Here is another rock from a middle Tennessee creek. (Mississippian, St. Louis Limestone & Warsaw Limestone) It is full of tiny brachiopods, bryozoan bits and maybe a few other fossils. I would like to have the area circled in red identified. 

[BLT]

[BLT]

[daves64]

The red circled area looks like part of an oyster shell. 

[Kane]

Neat hash plate. The circled area looks like a fragment from something oyster-like given the undulation of the plications.

 

Image from MyRockhound.com for comparison:

 

[daves64]

Just now, Kane said:

Neat hash plate. The circled area looks like a fragment from something oyster-like given the undulation of the plications.

 

Image from MyRockhound.com for comparison:

 

HA! Beat ya' by 1 minute, and with the same pic no less! 

[Kane]

@daves64: That was spooky... We basically posted within a few seconds of each other, providing the same image!

[daves64]

Well, it IS almost Halloween.. 

[BLT]

Too funny!  Thank you both!

[Kane]

LOL. Or, "great minds..."  

[daves64]

Just to add to it, both pics are from the same site. I googled oyster shell fossil, saw that one & grabbed it. But I'm not sure about the "great minds" part... have you met my mind? 

[FranzBernhard]

This seems like a good match! But were oyster-like bivs already around during the Mississippian?
Franz Bernhard

[BLT]

6 hours ago, FranzBernhard said:

This seems like a good match! But were oyster-like bivs already around during the Mississippian?
Franz Bernhard

[Rockwood]

I can't quite shake my first impression of a trilobite molt. 

[BLT]

1 minute ago, Rockwood said:

I can't quite shake my first impression of a trilobite molt. 

 

[Bobby Rico]

Great material to try out  your macro lens.

[BLT]

1 minute ago, Bobby Rico said:

Great material to try out  your macro lens.

I’m still working on holding my iPhone perfectly still, and experimenting with different lighting when indoors. 

[Bobby Rico]

2 minutes ago, BLT said:

I’m still working on holding my iPhone perfectly still, and experimenting with different lighting when indoors. 

Try resting you arms on the table to steadys your hands . Looks like you may see some interesting shapes in this piece.

[BLT]

It’s an interesting little rock with a medley of fossil bits in it. I’ve enjoyed studying it through my macro lens.

[Bobby Rico]

1 minute ago, BLT said:

It’s an interesting little rock with a medley of fossil bits in it. I’ve enjoyed studying it through my macro lens.

Hash plates are my favourite to photograph. Very interesting.

[BLT]

Just now, Bobby Rico said:

Hash plates are my favourite to photograph. Very interesting.

I agree with that! 

[DPS Ammonite]

8 hours ago, FranzBernhard said:

This seems like a good match! But were oyster-like bivs already around during the Mississippian?
Franz Bernhard

There are no oyster-like shells in the Mississippian. I think that a pectinoid with pronounced ribs and growth rings is possible. It also cound be a brachiopod.

[FranzBernhard]

8 hours ago, Rockwood said:

I can't quite shake my first impression of a trilobite molt. 

Funny! That was my first impression, too.

 

6 hours ago, DPS Ammonite said:

I think that a pectinoid with pronounced ribs and growth rings is possible. It also cound be a brachiopod.

Good suggestions! Maybe someone here on the forum has reference material/photos of such Mississippian fossils?

Franz Bernhard

[piranha]

From this perspective this one is certainly not a trilobite:

 

[Rockwood]

20 hours ago, Rockwood said:

I can't quite shake my first impression of a trilobite molt. 

That helps.