Updating titanosaurian diversity (Sauropoda) from the Late Cretaceous of Spain: the fossil sites of Laño and Chera


Three titanosaurian sauropods are well-known from the Campanian-Maastrichtian of the Ibero-Armorican Island (southwestern Europe): Lirainosaurus astibiae from Spain, and Ampelosaurus atacis and Atsinganosaurus velauciensis from France. However, a higher titanosaurian diversity has been suggested for this island, a hypothesis that has gained traction in recent years as a result of new discoveries in fossil sites from Spain and southern France. An estimation of the titanosaurian diversity in the late Campanian-early Maastrichtian of the Iberian Peninsula is made here on the basis of the available information from the three fossil sites that have yielded the best preserved fossil remains: Laño (Condado de Treviño), Chera (Valencia), and Lo Hueco (Cuenca). The results confirm the hypothesis of a higher titanosaurian diversity in the Iberian Peninsula: from one to, at least, three taxa. Moreover, we also suggest the presence of two different titanosaurian morphotypes in the site of Chera, with one of them representing Lirainosaurus

Palabras clave

Dinosauria, Sauropoda, Titanosauria, Campanian-Maastrichtian, Iberia

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