klattrocks Posted March 27, 2022 Share Posted March 27, 2022 I have a real mystery fossil I found in 2004 from Lumpkin, Georgia. The formaton is the Upper Cretaceous Ripley FM. US 27 was being 4 laned and quite a bit of new material was exposed in the road cuts. I think I was within a quarter mile of either side of the well known Frog Bottom Creek Upper Cretaceous fossil site. I found Exogyra costata, Flemingostrea subspatulata, Pycnodonte mutabilis, casts and molds of gastropods and pelecypods,worm burrows, etc. The oysters have well preserved shells, and the rest of the shells are mainly impressions and casts. Originally I just glanced at the mystery fossil and thought it was a impression of a pecten and set it aside. I'm now organizing my fossil collections and upon closer inspection I realized it wasnt a shell impression. Any guesses on what this is? I have never seen anything like this in my lifetime of collecting. Link to comment Share on other sites More sharing options...
Plax Posted March 28, 2022 Share Posted March 28, 2022 Maybe a pseudomorph of a large ribbed bivalve as opposed to a cast or mold? Link to comment Share on other sites More sharing options...
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