Swiss Journal of Geosciences

, Volume 103, Issue 2, pp 211–233

CAD assessment of the posture and range of motion of Kentrosaurus aethiopicus Hennig 1915

Authors

    • Museum für Naturkunde-Leibniz Institute for Research on Evolution and Biodiversity at the Humboldt University
Article

DOI: 10.1007/s00015-010-0024-2

Cite this article as:
Mallison, H. Swiss J Geosci (2010) 103: 211. doi:10.1007/s00015-010-0024-2

Abstract

A computer aided design analysis using high-resolution laser scans of the bones of the stegosaur Kentrosaurus aethiopicus Hennig1915 from the Late Jurassic Tendaguru Formation indicates that in the habitual walking pose the forelimbs were probably held erect, and that strong humeral flexion and abduction mainly occurred in a defensive stance. Rapid gaits with unsupported phases could not be used. The neck allowed sufficient lateral flexion to guarantee good sight in all directions including posteriorly. The tail covered an arch of roughly 180° and had sufficient range to be used as a weapon. Possibly, the animal could accomplish tail blows against specific targets in sight. Also, a tripodal pose is suggested to have been possible, roughly doubling the maximum vertical feeding height of Kentrosaurus.

Keywords

StegosauriaKentrosaurusTendaguru FormationLate JurassicDigital skeleton3D CAD assessment

Abbreviations

MFN

Museum für Naturkunde, Leibniz-Institut für Evolutions- und Biodiversitätsforschung an der Humboldt-Universität zu Berlin. Collection numbers for reptiles MB.R.####, provisional collection numbers MB.I.####

IFGT

Institut für Geowissenschaften der Eberhard-Karls-Universität Tübingen. Collection numbers GPIT ###

FUB

Freie Universität Berlin. Collection numbers of osteological collection IPFUB OS ##

ONP

osteologically neutral position. Two vertebrae are in ONP if their zygapophyses fully overlap, and the centra faces are parallel (or, if the centra and haemapophyses are aligned for maximum contact area)

Copyright information

© Swiss Geological Society 2010