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We studied at least part of Kuhnʼs original material of lizards from the Paleocene (~ MP 5 ) of the Walbeck locality in Germany. The collection was considered to be lost but is consistently discussed in the literature due to its importance. We restudied the type material of aff.    Parasauromalus   paleocenicus    and aff.    Glyptosaurus   walbeckensis    described by Kuhn in 1940. The former was originally allocated to   Iguania  , the latter to   Anguimorpha  , though later on these identifications were questioned by several authors. We show such a classification of both cannot be upheld.    P.   paleocenicus    resembles the morphology of lacertids showing their presence in Europe already around  MP 5 . We consider the name    P.   paleocenicus    as a nomen dubium. The material of aff.    G.   walbeckensis    was later suggested to belong to   Lacertidae   and also considered as a potential amphisbaenian. Although it differs from modern amphisbaenians, it shares features with one supposed polyodontobaenid –    Camptognathosaurus   parisiensis   . The Walbeck form is identical to this species. Since the Walbeck taxon was described in 1940, the principle of priority makes    Camptognathosaurus   parisiensis    a junior synonym of the species erected by Kuhn. We propose a new combined name for this form,    Camptognathosaurus   walbeckensis    comb. nov. The specimen figured by Kuhn is currently lost, thus we designate a neotype from Walbeck. However, this taxon differs significantly from    Polyodontobaena    and new data doubt the attribution of    Camptognathosaurus    to   Amphisbaenia  . This taxon is tentatively assigned here to   Lacertidae  , as further confirmed by phylogenetic analyses. Material of   Scincoidea   is also described.

﻿Roots of the European Cenozoic ecosystems: lizards from the Paleocene (~MP 5) of Walbeck in Germany

Roots of the European Cenozoic ecosystems: lizards from the Paleocene (~MP 5) of Walbeck in Germany