Thursday, September 29, 2011

Cererithyris arkelli

Today's fossil is Cererithyris arkelli from the Bathonian stage of the Jurassic (164-167 mya). These were collected from Luc sur Mer in the providence of Normandy, France. It is a Terebratulid and shows just a little bit of plication (the zig-zag folds) near the front edge of the mature shells.

Pedicle

Front

Brachial

Rear

Profile

Thanks to my good friend Gery, who collected these himself, for sending me these fossils!

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