Five Diplomystus and a Phareodus | 100% Natural | Green River Formation | Wyoming blue calcite during the Precambrian period

during the Precambrian period

Those with the "plesiosauromorph" build had a long neck and a small head

likely an adaptation to more open habitats compared to its predecessors

The tufa formed on the sea floor when natural mineral springs came into contact with saline sea water and the dissolved minerals precipitated out of solution

size: 24" x 20

Five Diplomystus and a Phareodus | 100% Natural | Green River Formation | Wyoming blue calcite during the Precambrian periodDiplomystus dentatus & Phareodus testis Unrestored specimen, 100% Natural Eocene (51. 98 Million Years Ago) Green River Formation, Wyoming, USA In Stone Fossils Private Quarry Plate approx. size: 46. 75" x 42. 75" x 2" Diplomystus approx. sizes: 7. 25", 8", 16. 5", 18", & 18" Phareodus approx. size: 5. 25" **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