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†Speetoniceras agnessense Imlay 1960
urn:lsid:organismnames.com:name:2674354
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†Speetoniceras agnessense Imlay 1960
Imlay 1960. Ammonites of Early Cretaceous age (Valanginian & Hauterivian) from the Pacific Coast States. Professional Papers US Geological Survey, 334-F 1960: 167-228