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Showing results for tags 'didymoceras'.
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Didymoceras ammonite identification
Mochaccino posted a topic in Fossil IDHello, Can someone help me identify these two Didymoceras pieces to the species-level? They are from Montana and both were repaired from a few fragments, though neither is said to be composite. From what I can tell they are in the 10-15cm range in terms of size. 1. This one seems to be part of the inner whorl, and based on how close the coil is I think D. cheyennense might be excluded, which leaves either D. stevensoni or D. nebrascense? Also in the 3rd photo there is a strange mismatch between the fragments...a poor fit or composite perhaps?
From the Pierre Shale in Boulder Colorado. Just wanted a second pair of eyes to take a look.