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Anisomyon cf. cassidarius, Arcadia Park

Anisomyon cf. cassidarius, Arcadia Park

Anisomyon cf. cassidarius, Denton Co.

Turonian, Cretaceous

Jan, 2023


Anisomyon are limpet-like gastropods found throughout Cretaceous strata. They are conic in shape and have a characteristic single ridge running from the center to the edge of the shell. These gastropods are known from the uppermost Arcadia Park, but little research has been dedicated to them. Anisomyon cassidarius has been reported from the Lower Turonian to Santonian and shares some visual similarities with my specimen. Surprisingly, this is not my first example of Anisomyon; I have a larger one from the NSR!

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From the album:

Eagle Ford Group

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Photo Information for Anisomyon cf. cassidarius, Arcadia Park

Taken with Apple iPhone 11

  • 4.3 mm
  • 1/2141
  • f f/1.8
  • ISO 32
View all photo EXIF information

Recommended Comments

interesting fossil...I would have guessed that was a shark vertebra centrum impression.

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Tidgy's Dad


Very interesting. 

To me it looks similar to some inarticulate brachiopods. 

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