Revisión del género “Enaliosuchus” Koken, 1883 (Archosauromorpha: Metriorhynchidae) del Cretácico Inferior del NW de Alemania

Abstract

The type material of Enaliosuchus schroederi Kuhn, 1936 from the lower Early Cretaceous (lower Early Valanginian) of the former clay pit of Sachsenhagen (SSW of the "Steinhuder Meer", Lower Saxony, northwestern Germany) is revised in detail for the first time under modern aspects. It consists of a skull (without the tip of the snout) with lower jaw and the anterior three cervical vertebrae which were still attached to the skull during the collecting process. The main conclusion of this study is that the whole older materials of Enaliosuchus cannot be determined more precisely than as Metriorhynchus sp. (in open nomenclature). For a more detailed systematic classification, a revision and anatomical analysis of all hitherto known skulls of Metriorhynchus in both, occipital and palatinal views would be necessary.