El material de cocodrilos del yacimiento de Viso, del Cretácico Superior de Portugal, fue descrito en el siglo XIX por Sauvage como "Crocodylus" blavieri, pero aunque esta nomenclatura se lleva considerando como érronea durante décadas, no se ha llevado a cabo todavía una reevaluación de este material. En este trabajo se estudia este material a la luz de los avances en el estudio de los cocodrilos alodaposúquidos de otros yacimientos de la misma edad de la Península Ibérica y se concluye que, en base a ciertas características morfológicas de la tibia y las vértebras dorsales, los restos podrían ser atribuibles a un cocodrilo eusuquio alodaposúquido indeterminado, lo que supondría el primer registro de este grupo en Campaniense-Maastrichtiense de Portugal. El resumen de este trabajo es el siguiente:
The crocodyliform taxon Crocodylus blavieri, from the Late Cretaceous of Viso (Portugal), was first described by Sauvage in 1898. Although traditionally considered a nomen dubium, this material has not been formally reassessed until now. The original description included a tibia, several vertebrae, an osteoderm, and isolated teeth. The absence of cranial remains, combined with the scarcity of comparable material in the Ibero-Armorican domain, has long precluded a thorough taxonomic evaluation. However, recent studies on well-preserved postcranial material of European Late Cretaceous crocodyliforms, particularly the allodaposuchids from Lo Hueco (Cuenca, Spain), provide a robust comparative framework. Here, we present a morphological reappraisal of the Viso remains. Both the tibia and the dorsal vertebrae exhibit a combination of features characteristic of allodaposuchids, including the distinctive morphology of the tibial shaft and the deep grooves on the ventral surface of the posterior dorsal vertebrae. Based on this morphological evidence, the Viso material formerly assigned to Crocodylus blavieri is here referred to Allodaposuchidae. While its assignment to the genus Crocodylus is obviously obsolete, the specific validity of “Crocodylus” blavieri requires further assessment and will be discussed through comparison with other Ibero-Armorican allodaposuchids This re-evaluation provides the first formal record of allodaposuchids in the Campanian-Maastrichtian record of Portugal, expanding the known geographical distribution of the clade within the Late Cretaceous European archipelago and providing new insights into the diversity and distribution of Iberian allodaposuchids.
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