Name: Quenstediceras sp.
Age: Jurassic, Callovian Stage
Size (25.4mm=1 inch): 33 mm diameter Quenstedticeras on a 52 mm by 36 mm base
Location: Volga River Region, Russia
Code: RA148
Price: $50.00 - sold
 Description:
A superb example of an ammonite of the genus Quenstedticeras of the
Callovian Stage (161 m.y.a) deposits of Russia. This fine example
has had one side of the shell removed to allow you to see the intricate
detail of the interior. You can easily see the individual chambers
which were successively occupied in a spiral pattern by the ammonite
as it grew. The septa (divisions) between the chambers are evident
as the fine line between them. The environment was anoxic, leading
to formation of Iron Pyrite (Fool's Gold), crystals of which line
each chamber for a dramatic effect. It is well presented on a 52 mm
by 36 mm pyritized matrix base. |
