ammonite bluff - Upper Austin Chalk
Upper Cretaceous Austin Chalk / Pflugerville Formation with large Parapuzosia americana ammonite fragments visible.
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© © JJackson
By JohnJ
Upper Cretaceous Austin Chalk / Pflugerville Formation with large Parapuzosia americana ammonite fragments visible.
By Gcurtis45,
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By distant_smile,
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