Isotelus iowensis, trilobite (Replica) Pteranodon An element of the median

An element of the median oral plates (that would correspond to the lower lip or chin in gnathostomes) extends out in a long rod-shaped appendage

It has been found in every continent except Africa and South America

Dingess Petroglyph Site Excavated

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This third 'eye' located on the forehead may have able to register light intensity and can help to regulate body temperature

Isotelus iowensis, trilobite (Replica) Pteranodon An element of the medianThis is an enlarged replica of Isotelus iowensis based of a specimen from the Ordovician Trenton Group, Trenton Falls, New York. Trilobites are very well known, and possibly the second most famous fossil group after the dinosaurs with some 15,000 known species. Trilobites are extinct arthropods that form the class Trilobita. They appeared at the start of the Cambrian period and flourished throughout the lower Paleozoic era before beginning a drawn out