Print ISSN: 0031-0247
Online ISSN: 2274-0333
Les traces de pas d'amphibiens, de dinosaures et autres reptiles du Mesozoïque Français
Révision des Rhombodontidae (Neoselachii Batomorphii) des bassins à phosphate du Maroc
Evolution et extinction des reptiles marins au Mésozoïque
A new stem hystricognathous rodent from the Eocene of Tunisia
Physogaleus hemmooriensis, a new shark species from the early to middle Miocene of the north sea basin
Lower Paleogene crocodilians from Silveirinha, Portugal.?Upper Paleocene / Lowermost Eocene; Crocodilians; Ecology; Portugal
Cite this article: Antunes M. T., 2003. Lower Paleogene crocodilians from Silveirinha, Portugal. Palaeovertebrata 32 (1): 1-26.
The presence at Silveirinha of one of the earliest, ? Late Paleocene or Lowermost Eocene, european representatives of the genus Diplocynodon is based mostly on isolated bones and teeth (often from juveniles). This small-sized form is the only crocodilian so far recognized in this site. The longevity of Diplocynodon in Portugal becomes much extended; the genus survived there until the Middle Miocene at least. A discussion on the possible affinities with other eocene Díplocynodon and especially those from Cubillos-Valdegallina (Zamora, Spain) is presented. On the other hand, differences have been detected in comparison with: Díplocynodon tormis, from the middle Eocene of the Douro basin in Spain, which may belong to another phyletic line; and the aff. Diplocynodon from Dormaal (Belgium) and Le Quesnoy (France), nearly contemporaneous of Silveirinha. The Silveirinha Diplocynodon and many other data strongly suggest moist, subtropical, quite limited in space environments related to an alluvial plain crossed by small, meandering channels.
Published in Vol. 32, Fasc. 1 (2003)