FOSSIL ICHTYOSAURUS VERTEBRAE SECTION JURASSIC HOLZMADEN GERMANY JURASSIC

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Species: Stenopterygius quadriscissusAge: Early Jurassic, Lias (180 mil y)Dimensions: 185 mm - 7 3/8"Origin: Posidonia shale, Holzmaden, GermanyNice body section with dorsal verts and ribs of an Ichtyosaurus.The first ichthyosaurs appeared in the Triassic. In the Jurassic, ichthyosaurs reached their highest diversity, and then began to decline. The last ichthyosaurs disappeared in the Cretaceous — several million years before the last dinosaurs died out. Whatever caused the extinction of the dinosaurs did not cause the ichthyosaurs to die out.