Platygonus vetus, skull (Peccary) Dimorphodon Selenite is a form of

Selenite is a form of the mineral Gypsum (Hydrated Calcium Sulfate CaSO4-2(H2O)

though the change was by no means immediate

Because of the long tail and spine like appendage at the tip of the tail the Eurypterids have been called " sea scorpions

The orange bars in the photos are 10 centimeters for scale

Platygonus vetus, skull (Peccary) Dimorphodon Selenite is a form ofThe Pleistocene peccary Platygonus vetus from Poorfarm Cave, Pocahontas County, WV. Ray Garton, Curator, WV Geological Survey , Morgantown, WV Fredrick Grady, Arlington, VA Marshall G Homes, Snow Shoe, WV ABSTRACT as published in West Virginia Academy of Science Proceedings A virtually complete, articulated skeleton of the extinct peccary Platygonus vetus has been recovered from an obscure passage in Poorfarm Cave, Pocahontas County, West Virginia.