Ankylosaur Remains from the Early Cretaceous (Valanginian) of Northwestern Germany
Zeitschrift: PLOS ONE, 20138: -
DOI: https://doi.org/10.1371/ journal.pone.0060571
Persistent URL: http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/6996
Persistent URL: http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/6996
Sachs, Sven; Hornung, Jahn J., 2013: Ankylosaur Remains from the Early Cretaceous (Valanginian) of Northwestern Germany. In: PLOS ONE, Band 8, DOI: 10.1371/ journal.pone.0060571.
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A fragmentary cervico-pectoral lateral spine and partial humerus of an ankylosaur from the Early Cretaceous (early
Valanginian) of Gronau in Westfalen, northwestern Germany, are described. The spine shows closest morphological
similarities to the characteristic cervical and pectoral spines of Hylaeosaurus armatus from the late Valanginian of England.
An extensive comparison of distal humeri among thyreophoran dinosaurs supports systematic differences in the
morphology of the distal condyli between Ankylosauria and Stegosauria and a referral of the Gronau specimen to the
former. The humerus fragment indicates a rather small individual, probably in the size range of H. armatus, and both
specimens are determined herein as ?Hylaeosaurus sp.. A short overview of other purported ankylosaur material from the
Berriasian-Valanginian of northwest Germany shows that, aside from the material described herein, only tracks can be
attributed to this clade with confidence at present.