Large Prehistoric starfish and sea lily crinoid fossil of a mass extinction event, Ordovician Period, c. 488-443 million years ago, from the Ktaoua Formation in the Anti-Atlas Mountains, North Africa. Truly a museum grade display fossil slab of impressively large proportions, this is an amazing, completely natural association of a mass extinction event displaying several starfish and crinoid (sea lily) fossils. A specimen such as this with its impeccable preservation and dense concentration of multiple types of extinct sea life, is very uncommon in the fossil record. Furthermore, the quality of the overall grouping as well as the intact nature of the rock layer is something that is rarely seen. A large natural disaster event must have occurred to kill off so many of these organisms at once, perhaps a prehistoric tsunami. A large, and visually impressive specimen of a mass extinction event, perfect for both display and study, with minor repair, but no fabrication. Matrix: 26 in x 16 in; Starfish: 4 ½ in to 5 in across. Ex French private collection.
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