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Isolated shark and actinopterygian teeth and scales were found in marine levels of the El Jarillal Formation (Early Permian), which crops out near the Cerro Vizcacha, Provincia de Mendoza, Argentina. Scarce previous Paleozoic vertebrate remains are known from Argentina and none was described from the Permian. Only tetrapod traces were reported before. However, vertebrates (especially fishes) are relatively...
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