Inter- and intra-specific variation in the ontogeny of the hominoid facial skeleton: testing assumptions on ontogenetic variability

Strand Vidarsdóttir, U.; Cobb, S.

doi:10.1016/s0940-9602(04)80076-1

Inter- and intra-specific variation in the ontogeny of the hominoid facial skeleton: testing assumptions on ontogenetic variability

Strand Vidarsdóttir, U.; Cobb, S.

Authors

U. Strand Vidarsdóttir

S. Cobb

Abstract

In this paper we use geometric morphometric techniques to test two assumptions that are commonly made about variations in facial ontogeny: closely related species, or members of the same species, will share a common early post-natal ontogeny; and closely related species, or members of the same species, will share a common ontogenetic scaling trajectory. To test these assumptions we use four species of hominines: Homo sapiens, Gorilla gorilla, Pan troglodytes and Pan paniscus. The first assumption is falsified, both inter- and intra-specifically, using discriminant analysis with crossvalidation of subadults prior to the onset of the eruption of the permanent dentition. The second assumption only holds true for inter-specific comparisons of ontogenetic scaling trajectories, while assumptions of variation in intra-specific scaling trajectories are falsified with these data.

Citation

Strand Vidarsdóttir, U., & Cobb, S. (2004). Inter- and intra-specific variation in the ontogeny of the hominoid facial skeleton: testing assumptions on ontogenetic variability. Annals of Anatomy, 186(5-6), 423-428. https://doi.org/10.1016/s0940-9602%2804%2980076-1

Journal Article Type	Article
Publication Date	Dec 1, 2004
Deposit Date	May 23, 2007
Journal	Annals of Anatomy
Print ISSN	0940-9602
Publisher	Elsevier
Peer Reviewed	Peer Reviewed
Volume	186
Issue	5-6
Pages	423-428
DOI	https://doi.org/10.1016/s0940-9602%2804%2980076-1
Keywords	Ontogeny, Gorilla, Pan, Homo, Geometric morphometrics, Allometry, Cranio-facial.