Describes several cases of sessile pelecypods (Dimyodon and Pycnodonta), attached to Micraster which have developed tubercules reflecting the shape of the echinoid in which they grew. It is proposed that the mineralogic term "pseudomorphism" be extended to apply to such cases of mimesis in fossils.

This content is PDF only. Please click on the PDF icon to access.

First Page Preview

First page PDF preview
You do not have access to this content, please speak to your institutional administrator if you feel you should have access.