Arietites
bucklandi, J.Sowerby, 1816
Lyme Regis,
Dorset Coast.
Family ARIETITIDAE Hyatt, 1874 Subfamily ARIETITINAE
Hyatt, 1874
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Arietites
bucklandi, J.Sowerby, 1816
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Lyme Regis,
Dorset Coast.
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Family ARIETITIDAE Hyatt, 1874 Subfamily ARIETITINAE
Hyatt, 1874
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| A Zone ammonite of the Lower Sinemurian Substage. | |
| Giant, massive, evolute planulates with subquadrate whorl sectionand tricarinate-bisulcate venter. Strong, near-rectiradiate ribbing on flanks. | |
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