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Limestone fossil from Bexar county Texas


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hibou wu

Hi, this rock was found in a construction site in Bexar county, Texas. I think there are mostly mollusk shells, but I’m also really curious about the little tube things, which I’m guessing might be crinoids? Thank you for your help!

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Al Dente

The first photo shows several gastropods. This one looks like the cross section through a coral.

 

 

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Rockwood

These look like worm tubes.

66AF193B-7B7B-48BB-B8A5-3DF168F1D0A9.png.6b0262816e468e6100046e014475be60_LI.jpg

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TyrannosaurusRex

Gastropod cross sections. I’ve seen many turritella and tylostoma from Bexar and the surrounding counties. I have a piece almost exactly like this from near there. Tall thin one is definitely Turritella. Nice piece  EFC21A11-8D4C-4584-8848-44B4A8DF1383.thumb.jpeg.bfd93d0d4b9a5b4322e24490e7746fbe.jpeg

 

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Uncle Siphuncle

Looks like Buda limestone.

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JohnJ
7 hours ago, Uncle Siphuncle said:

Looks like Buda limestone.

You sure this isn't upper Glen Rose formation with the solitary coral and serpulids?

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Uncle Siphuncle
16 hours ago, JohnJ said:

You sure this isn't upper Glen Rose formation with the solitary coral and serpulids?

Also a high percentage possibility. The better the provenance, the higher confidence we can wager assessments of formation.  I was going off erosional pattern of the gastros in hard limestone, and haven’t found corals personally in the Buda.

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