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Promicroceras
planicosta,Spath 1925
Charmouth, Dorset Coast. |
Family EODEROCERATIDAE Spath 1929
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Family EODEROCERATIDAE Spath 1929
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| Found within the Asteroceras obtusum zone of the Upper Sinemurian substage. | |
| Small capricorn ammonite without distinct tubercles. Ribs flattened on venter. Size 2cm across. | |
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