6.9" Floating Crinoid (Pterocoma) Fossil - Solnhofen Limestone

This is a beautifully preserved floating crinoid (Pterocoma sp.) from the Jurassic (~150 million year old) age Solnhofen Limestone in Germany. While most crinoids attached themselves to the sea floor with a stem and holdfast, crinoids of the order Comatulida, also known as feather stars typically do not have stalks. They live on the seabeds and reefs in tropical or temperate waters.

Upon request we can install a backing and french cleat style wall hanger at no additional charge. Otherwise this specimen will be accompanied by a metal/acrylic (gibson) display stand.

The Solnhofen limestone is a famous Upper Jurassic Lagerstätte in Germany. It is where one of the most famous fossils of all time, Archaeopteryx, was found. The fine-grained limestone makes excellent building materials, which has led to heavy quarrying over the past two centuries, resulting in some spectacular fossils being unearthed including fossil dragonflies, fish, pterosaurs, shrimp, horseshoe crabs, etc.

This area represented an archipelago at the edge of a sea. Due to high salt content, the lowest levels in the water column could not support much life and were largely devoid of oxygen. This lack of oxygen and scavengers on the bottom of the sea led to beautiful fossil preservation.

Pterocoma sp.
Solnhofen Limestone
6.9" wide crinoid on 17 x 12" limestone
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