Small ammonoids among small gastropods
A newly hatched
Baculites ?
More small ammonoids and gastropods with a fish scale.
From the Cretaceous Mancos Shale, Scaphites whitfieldi Zone, the coiled ammonoids could be
Scaphites whitfieldi or
Prionocyclus novamexicanus.
A study of these fossils Here http://www.sciencedirect.com/science/article/pii/S0016699511000957
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