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These fish belong to the genera Acrodus, Hybodus, Gyrolepis, and Saurichthys. Hybodus plicatilis, Agassiz. Teeth. Saurichthys apicalis, Agassiz. Tooth; natural size and magnified. Gyrolepis tenuistriatus, Agassiz. Scale; natural size and magnified. Remains of saurians, Plesiosaurus among others, have also been found in the bone-bed, and plates of an Encrinus.
The genera Saurichthys, Hybodus, and Gyrolepis are found in both these breccias, and one of the species, Saurichthys Mongeoti, is common to both bone-beds, as is also a remarkable reptile called Nothosaurus mirabilis. The saurian called Belodon by H. von Meyer, of the Thecodont family, is another Triassic form, associated at Diegerloch with Microlestes.
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