Journal of Iberian Geology

, Volume 43, Issue 2, pp 345–361 | Cite as

Analysis and phylogenetic status of the eusuchian fragmentary material from Western Europe assigned to Allodaposuchus precedens

  • I. Narváez
  • C. A. Brochu
  • F. Escaso
  • A. Pérez-García
  • F. Ortega
Research Article

Abstract

Purpose

During the last two decades, several specimens of eusuchian crocodyliforms have been described from the Campanian and Maastrichtian (Late Cretaceous) record of Europe. Most of them are now included in the recently described clade Allodaposuchidae. This clade is recognized as the sister group of the crown Crocodylia. The type species of Allodaposuchidae is Allodaposuchus precedens, described on material from the lower Maastrichtian of Vălioara (Hunedoara, Romania). The group also comprises several species from Spain and France. Some specimens from Spain, southern France and Romania were assigned to Allodaposuchus precedens by different authors. Thus, fragmentary cranial specimens from the upper Campanian of Armuña (Segovia, Spain) and the lower Maastrichtian of Bellevue (Aude, France) and Vilamitjana (Lleida, Spain), were attributed to Allodaposuchus precedens helping to propose a new diagnosis of this species. In fact, the assignment of specimens from Western Europe to Allodaposuchus precedens has been questioned in recent publications.

Methods

The present paper analyses the fragmentary material from Spain and France previously assigned to Allodaposuchus precedens.

Results

The material analysed, which previously had been attributed to Allodaposuchus precedens, has been reassigned here to Allodaposuchidae indet.

Conclusions

This study confirms that the species Allodaposuchus precedens was clearly restricted to Eastern Europe, clarifying the palaeobiogeography of the clade Allodaposuchidae during Campanian-Maastrichtian (Late Cretaceous).

Keywords

Basal Eusuchia Allodaposuchidae Allodaposuchus Allodaposuchus precedens Uppermost Cretaceous Europe 

Resumen

Objetivos

Durante las dos últimas décadas, se han descrito varios ejemplares de crocodiliformes eusuquios procedentes del Campaniense y Maastrichtiense (Cretácico Superior) de Europa. La mayor parte de estos ejemplares se han incluido en el clado Allodaposuchidae, recientemente descrito. Este clado constituye el grupo hermano de Crocodylia. La especie tipo de Allodaposuchidae es Allodaposuchus precedens, descrito a partir de material procedente del Maastrichtiense inferior de Vălioara (Hunedoara, Rumanía). El grupo también incluye varias especies procedentes de España y Francia. En los últimos años, algunos ejemplares de España, sur de Francia y Rumanía han sido asignados a la especie Allodaposuchus precedens por diferentes autores. De esta forma, distintos ejemplares craneales fragmentarios del Campaniense superior de Armuña (Segovia, España) y del Maastrichtiense inferior de Bellevue (Aude, Francia) y Vilamitjana (Lleida, España), se atribuyeron a Allodaposuchus precedens, ayudando a proponer una nueva diagnosis de esta especie. No obstante, la asignación de ejemplares del oeste de Europa a Allodaposuchus precedens ha sido cuestionada en publicaciones recientes.

Metodología

En el presente trabajo se analiza el material fragmentario procedente de España y Francia previamente asignado a Allodaposuchus precedens.

Resultados

El material analizado que previamente había sido atribuido a Allodaposuchus precedens, se ha reasignado a Allodaposuchidae indet.

Conclusiones

Este estudio confirma que la especie Allodaposuchus precedens estaba claramente restringida al Este de Europa, clarificando la paleobiogeografía del clado Allodaposuchidae durante el Campaniense-Maastrichtiense.

Palabras clave

Eusuchia basales Allodaposuchidae Allodaposuchus Allodaposuchus precedens Cretácico superior Europa 

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.Grupo de Biología Evolutiva, Facultad de Ciencias, UNEDMadridSpain
  2. 2.Department of Earth and Environmental SciencesUniversity of IowaIowa CityUSA

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