RT Journal Article
T1 Endocranial morphology of the Ursus deningeri Von Reichenau 1904 from the Sima de Los Huesos (Sierra de Atapuerca) Middle Pleistocene site
A1 García García, Nuria
A1 Santos, Elena
A1 Arsuaga Ferreras, Juan Luis
A1 Carretero, José Miguel
AB A complete skull of Ursus deningeri recovered from the Middle Pleistocene site of the Sima de los Huesos in the Sierra de Atapuerca (Spain) was studied with computed tomography. This technique makes it possible to study new and relevant information in the endocranial structures and avoids any damage to the specimen. The previously unde-scribed endocranial cavity of U. deningeri is compared with related species such as Ursus spelaeus Rosenmüller 1794 and Ursus arctos Linné 1758. The characters analyzed include the braincase morphology and also quantitative and volumetric measurements, which are only attainable with this technique. In particular, the volume, surface area, and form of the frontal sinuses and brain cavity, the shape of the ethmoid bone, and the basioccipital pneumatization were studied. The resulting analysis supports an ancestor-descendant relationship for the two ursids included in the cave bear phylogenetic lineage (U. deningeri and U. spelaeus). In contrast, U. arctos exhibits a different endocranial morphology, one that seems to be mainly plesiomorphous. Finally, this study has identified several new endocranial characters which are useful in reconstructing ursid phylogeny.
PB Taylor and Francis
SN 0272-4634
YR 2007
FD 2007
LK https://hdl.handle.net/20.500.14352/100140
UL https://hdl.handle.net/20.500.14352/100140
LA eng
NO García, Nuria, et al. «Endocranial Morphology of the Ursus Deningeri Von Reichenau 1904 from the Sima de Los Huesos (Sierra de Atapuerca) Middle Pleistocene Site». Journal of Vertebrate Paleontology, vol. 27, n.o 4, diciembre de 2007, pp. 1007-17. DOI.org (Crossref), https://doi.org/10.1671/0272-4634(2007)27[1007:EMOTUD]2.0.CO;2.
NO Dirección General de Investigación Científica y Técnica
NO Junta de Castilla y León
NO Fundación Siglo para las Artes
DS Docta Complutense
RD 6 abr 2025