Crinoid "Feather Stars" Columnal Segments rockinaboxatlasaurus This specimen is a fossilized

This specimen is a fossilized piece of a Triceratops Frill

The Plutonium produced here was used in both the Trinity test on July 16

Two sizes of SR-71 material are available: a smaller 3-6mm variant and a larger triangular cut piece shaped like the outline of the aircraft

The scarcity of gold in Mesopotamia led to the development of trade routes designed to obtain the precious metal

The specimen in the Core Sample was recovered from deposits near Glendive

Crinoid "Feather Stars" Columnal Segments rockinaboxatlasaurus This specimen is a fossilizedSometimes referred to as feather stars or sea lilies, Crinoids are members of an extended and very ancient family of sea animals known as echinoderms. Echinoderms date back as far as the Cambrian period some 541,000,000 years ago. They include such varied animals as sea urchins, sea cucumbers, and starfish. Their development was part of a much larger explosion of complex life on Earth which resulted in most of the animal or metazoan body plans we know