North European Plain Germany
Project:
Geological Time: Cretaceous Lower Cretaceous
Aptian / Albian
the specimen was picked and photographed by Michael Hesemann
with assistance of Dr. Georg Rosenfeldt, the raw material is provided by
described in Holbourn 2005 as not having an uncoiling part
The identification is based upon:
Holbourn, A. E. and Kaminski, M. A., 2005: