Looking upstream on Ward's Creek, about 80 miles west of San Antonio.
Downstream - water levels were unusually high following a recent winter storm.
Even so, fossils were still evident in the ledges of the limestone creek bed.
Classified the Glenrose Formation, these creatures date from the Cretaceous Period, about 100 million years ago.
A section of Nerinea sp. fossil still encased with matrix.
Another section of Nerinea, an extinct sea snail with a long, horn-shaped shell.
Known locally as the "Tarpley Tornado Snail."
Tylostoma sp, another extinct marine gastropod.
Cretaceous fossil clam.
The best find of the day was this large plate of fist-sized snail shells.
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