Allodaposuchus palustris sp. nov. from the upper Cretaceous of Fumanya (South-Eastern Pyrenees, Iberian Peninsula) : systematics, palaeoecology and palaeobiogeography of the enigmatic Allodaposuchian crocodylians
Blanco, Alejandro (Institut Català de Paleontologia Miquel Crusafont)
Puértolas Pascual, Eduardo (Universidad de Zaragoza. Grupo Aragosaurus-IUCA)
Marmi i Plana, Josep Maria (Institut Català de Paleontologia Miquel Crusafont)
Vila Ginestí, Bernat (Universidad de Zaragoza. Grupo Aragosaurus-IUCA)
Sellés, Albert G. (Institut Català de Paleontologia Miquel Crusafont)

Data:	2014
Resum:	The controversial European genus Allodaposuchus is currently composed of two species (A. precedens, A. subjuniperus) and it has been traditionally considered a basal eusuchian clade of crocodylomorphs. In the present work, the new species A. palustris is erected on the base of cranial and postcranial remains from the lower Maastrichtian of the southern Pyrenees. Phylogenetic analyses here including both cranial and postcranial data support the hypothesis that Allodaposuchus is included within Crocodylia. The studied specimen suggests little change in postcranial skeleton along the evolutionary history of crocodylians, except for some bone elements such as the axis, the first caudal vertebra and the ilium. The specimen was found in an organic mudstone corresponding to a coastal wetland environment. Thus, A. palustris from Fumanya is the first Allodaposuchus reported in lacustrine-palustrine settings that expand the ecological range for this genus. The S-DIVA palaeobiogeographic reconstruction of ancestral area suggests that early members of Crocodylia rapidly widespread for the Northern Hemisphere landmasses no later than the Campanian, leading the apparition of endemic groups. In that way "Allodaposuchia" represents an endemic European clade probably originated in the Ibero-Armorican domain in the late Campanian and dispersed by the Southern European archipelago prior to the early Maastrichtian.
Ajuts:	Ministerio de Economía y Competitividad CGL2011/30069-C02-01/BTE Agència de Gestió d'Ajuts Universitaris i de Recerca 2013/FI_B/01059 Ministerio de Ciencia e Innovación JDC2011
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Publicat a:	PloS one, Vol. 9, Issue 12 (Desembre 2014) , art. e0115837, ISSN 1932-6203

DOI: 10.1371/journal.pone.0115837
PMID: 25551630

34 p, 12.0 MB

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