Show Your Look-Alikes

[Bullsnake]

This opening post might be elementary to seasoned collector, but I hope it can be helpful to novices, or maybe someone out of their specialty.

Despite size, and texture, note the suggestive shape between a Pennsylvanian shark tooth (Deltodus?) and Myalina(?) clam.

The two larger specimens at top are the clams:

At first I thought this was a cross-section of a shell. I'm glad I checked it out further.

This is the same tooth from the above photos:

Shells eroding from strata (different location):

[Bullsnake]

Now for texture.

Pennsylvanian shark tooth:

Credit to Missourian for explaining this

Worn oolites (Note the complete oolites in the surrounding matrix):

Bryozoan (Fistulipora?)

Note the rougher texture, and appears to be same material as the matrix:

I think you get the idea!

Edited November 13, 2012 by Bullsnake

[Missourian]

Um....