Mazon Monday #303: Smithixerxes juliarum This is Mazon Monday post #303. What’s your favorite Mazon Creek fossil? Tell us at email:esconi.info@gmail.com. Smithixerxes juliarum is among the rarest animals found in the Mazon Creek fossil deposit. It belongs to an extinct group of arthropods known as the euthycarcinoids, which ranged from the Cambrian to the Triassic periods. Some researchers believe euthycarcinoids may have been amphibious, capable of venturing between water and land.

Mazon Monday #303: Smithixerxes juliarum #fossils #paleontology #MazonCreek #MazonMonday #arthropod #Euthycarcinoid #carboniferous #pennsylvanian