Thursday, August 24, 2017

Unknown Coiled Cephalopod Fossil


Recently, I was e-mailed these pictures of coiled cephalopod fossil. It was found by an 11 year old boy in rock from a quarry in northwest Illinois. The rock dates to the Silurian Period.

I think it might be a Lechritrochoceras. See the drawing of one at the Illinois State Geological Survey web site: http://www.isgs.illinois.edu/outreach/geology-resources/cephalopods


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