Cheirogaster richardi

Domingo López González

12-9 milion years ago, during the Middle Miocene (Aragonese), a species of giant tortoise called Cheirogaster richardi lived in the neogenous basin in Vallés- Penedès (Barcelona). Thanks to the sediments deposition replenishing the basin, the rests of these big reptiles were fossilize and could remain conserved. Excavations in the Can Mata paleontological site, in the Els Hostalets de Pierola township (Barcelona), more than 300 individuals were found indicating the great proliferation of this species. Studied subjects conserve their shell bone plates with grooves in the dermic shields and, in some cases, we can find rests of skeletons, especially postcranial rests.

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