Today Me and Roz hunted an exposure of the Walnut formation in Parker County, Texas. Here you can see the dramatic change between the limestone/marl of the Walnut formation and the sandstone of the underlying Paluxy formation. | ||
(pic by Roz) |
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Engonoceras ammonite |
Ceratostreon weatherfordensis? oyster |
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Roz's Holectypus echinoid (pic by Roz) |
(same) (pic by Roz) |
Roz's other Holectypus echinoid (pic by Roz) |
Arca? clam (internal mold) |
(same) |
Roz's Salenia mexicana? echinoid |
Heteraster echinoid |