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Name:
Common name:
Mesosaurus tenuidens → Middle lizard
Synonym:
Mesosaurus tenuidens → Mesosaurus brasiliensis, (McGregor, 1908)
Family / Genus / Species / Binom / Author:
Mesosauridae → Mesosaurus → tenuidens → Mesosaurus tenuidens → Gervais, 1865
Location:
Paleorotta, Brazil / South America
Age:
Lower Permian [p], Irati Formation / 280 million years
Size of the item:
Thickness: 2,4 cm
Height: 26,9 cm
Length: 23,9 cm
Size of the fossil:
Weight:
Well preserved skeleton of the Lower Permian reptile Mesosaurus brasiliensis. The aquatic animals were predatory. Interesting is their occurrence on the South American continent, as well as in southern Africa. Their finds serve as further evidence of continental drift; 280 million years ago, South America and Africa were still connected in the supercontinent Gondwana. The skeleton is free of additions, the plate is glued once in the middle and partially filled on the back. When found, the plate was offset by a few millimeters at the tectonic crack, which can still be seen on the side from the fine-layered laminations of the sediment. The preparator obviously tried to compensate for the offset on the visible side of the plate by grinding down the surface. As a result, in some places along the glued seam, something of the next deep grey-colored sediment lamella comes to light, which unfortunately emphasizes the glueing optically. The fossil came to Europe many years ago, but the export of such exhibits from Brazil is now prohibited.
