Journal
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
Volume 274, Issue 1624, Pages 2375-2384Publisher
ROYAL SOC
DOI: 10.1098/rspb.2007.0750
Keywords
hominoidea; fossil primates; palaeobiology; hand; locomotion; evolution
Categories
Funding
- ICREA Funding Source: Custom
Ask authors/readers for more resources
Morphological and biometrical analyses of the partial hand IPS18800 of the fossil great ape Hispanopithecus laietanus ( =Dryopithecus laietanus), from the Late Miocene ( about 9.5Ma) of Can Llobateres ( Catalonia, Spain), reveal many similarities with extant orang-utans ( Pongo). These similarities are interpreted as adaptations tobelow-branch suspensory behaviours, including arm-swingingand clambering/postural feeding on slender arboreal supports, due to an orang-like double-locking mechanism. This is confirmed by the long and highly curved phalanges of Hispanopithecus. The short and stout metacarpals with dorsally constricted heads, together with the dorsally extended articular facets on proximal phalanges, indicate the persistence of significant degrees of palmigrady. A powerful grasping capability is indicated by the great development of basal phalangeal tubercles, the marked insertions for the flexors on phalangeal shafts and the large pits for the collateral ligaments. The morphology of the Hispanopithecus long bones of the hand indicates a unique positional repertoire, combining orthogrady with suspensory behaviours and palmigrade quadrupedalism. The retention of powerful grasping and palmigrady suggests that the last common ancestor of hominids might have been more primitive than what can be inferred on the basis of extant taxa, suggesting that pronograde behaviours are compatible with an orthograde bodyplan suitable for climbing and suspension.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available