An eusuchian skeleton from the lower Maastrichtian palustrine deposits of Fumanya (south-eastern Pyrenees, Iberian Peninsula)

摘要: During the Late Cretaceous, crocodylomorph faunas were highly diverse, including dyrosaurids, pholidosaurids, notosuchians, some relics of typical faunas of the Early Cretaceous such as atoposaurids and goniopholidids, and taxa of the clade Eusuchia, from which diverged living crocodylians. Eusuchians are composed of several stem taxa and the crown Crocodylia containing the three major lineages Crocodyloidea, Alligatoroidea and Gavialoidea (Buscalioni et al., 2003; Puértolas et al., 2011). he earliest members of Eusuchia and the clade Crocodylia originated in the northern continents, North America and Europe, and had a prolonged radiation between the Late Cretaceous and the Eocene. In the Late Cretaceous, members of Eusuchia representing its early radiation occurred in Europe (Narváez & Ortega, 2011). Among them there was the sister taxa of Crocodylia, such as Hylaeochampsidae (eg the English Hylaeochampsa vectiana, the Hungarian Iharkutosuchus makadii, the Romanian Acynodon adriaticus and the Iberian Acynodon iberoccitanus) and the genus Allodaposuchus (according to Puértolas-Pascual et al., 2013). h is later genus is composed of the following species: the Romanian Allodaposuchus precedens, the French Allodaposuchus cf. A. precedens, and the Spanish Allodaposuchus subjuniperus. Among the crown taxa there were basal crocodyloids as the Spanish Arenysuchus gascabadiolorum and basal alligatoroids as the French Massaliasuchus al uvelensis and the Spanish Musturzabalsuchus buf etauti, but probably these taxa are more related to the stem group than with the crown group and a new classii cation …