Pachystropheus
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Pachystropheus is a genus of prehistoric thalattosaurian marine reptile, from the Rhaetian of southwestern England and southern Germany. It is the youngest known thalattosaur.
Life restoration of Endennasaurus , thought to be a close relative of Pachystropheus
Endennasaurus
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Endennasaurus is an extinct genus of thalattosaurian from the Upper Triassic of Italy. It was found in and named after the Endenna cave, composed of Zorzino Limestone in Lombardia.
Endennasaurus acutirostris tail