Fossiler

Middle Triassic, Ladinian, approximately 230 million years ago - Monte San Giorgio, Ticino, Switzerland Mer

Middle Ordovician (Darriwilian) time fossil (over 460mln) - St Petersburg, Russia Mer

Pleistocene - 20,000 to 50,000 years - North Sea Mer

Cretaceous, Aptian - Walsh River area, Queensland, Australia Mer

Middle Devonian (410 -360 mil y) - Jbel Issoumour, Morocco Mer

Eocene, Green River Formation, 50 million years old - Wyoming, USA Mer

Middle Ordovician (Darriwilian) time fossil (over 460 mln), St Petersburg, Russia Mer

Pleistocene (20000 - 12000 years old) - Siberia Russia Mer

Paleocene - Kem Kem Basin, Morocco Mer

Tarantian, Pleistocene (80,000 to 25,000 years old) - Amur, Russia Mer

Middle Ordovician - deposits of Putilovo quarry St Petersburg, Russia Mer

Cretaceous (112 - 97 mil y) - Kem-Kem formation, Moroco Mer

Jurassic (135 - 122 mil y.) - Peipiao, Liaoning Province, China Mer

Middle Ordovician time fossil (over 460 mln years) - St Petersburg, Russia Mer

Eocene, approx. 50 million years - Fleury, France Mer

Middle Triassic - Gzangchan, Guizhou, China Mer

Middle Ordovician (over 460 mln years), St Petersburg, Russia Mer

Tarantian, Pleistocene (80,000 to 25,000 years old) - Amur, Russia Mer

Lower Cretaceous (133 -120 mil y) - Jehol Biota, Liaoning, China Mer

Cretaceous - China Mer

Pleistocene - (2.0 - 0.7 Ma) - North Florida, USA Mer