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Their skeleton is composed of articulated calcite plates (ossicles)
this prehistoric shark was at least one and one-half times as big as the biggest Great White Sharks alive today
Notogoneus osculus and Diplomystus dentatus | 100% Natural | Green River Formation | Wyoming heart This article abides by termsNotogoneus 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
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