#ancyloceratoidea

Ancyloceratoidea

Extinct superfamily of molluscs

Ancyloceratoidea, formerly Ancylocerataceae, is a superfamily of typically uncoiled and loosely coiled heteromorph ammonoids established by Alpheus Hyatt in 1900, that may contain as many as 11 families, depending on the classification accepted.

Sun 11th

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