Notogoneus osculus and Diplomystus dentatus | 100% Natural | Green River Formation | Wyoming heart This is because

This is because

There are various groups of insects that lived before recorded history and like today

The earliest ammonites appear during the Devonian

this prehistoric shark was at least one and one-half times as big as the biggest Great White Sharks alive today

Their skeleton is composed of articulated calcite plates (ossicles)

Notogoneus osculus and Diplomystus dentatus | 100% Natural | Green River Formation | Wyoming heart This is becauseNotogoneus osculus and Diplomystus dentatus Unrestored specimen, 100% Natural Eocene (51. 98 Million Years Ago) Green River Formation, Wyoming, USA In Stone Fossils Private Quarry Plate approx. size: 29. 75" x 41. 75" Notogoneus approx. size: 22. 5" Diplomystus approx. size: 16. 5" **Due to the size of this specimen, it will be shipped in an internationally compliant wooden crate. The plate itself is backed with 3 4" plywood for durability and easy