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- W2346004777 endingPage "531" @default.
- W2346004777 startingPage "508" @default.
- W2346004777 abstract "Abstract Thylacoleo carnifex , or the “pouched lion” (Mammalia: Marsupialia: Diprotodontia: Thylacoleonidae), was a carnivorous marsupial that inhabited Australia during the Pleistocene. Although all present-day researchers agree that Thylacoleo had a hypercarnivorous diet, the way in which it killed its prey remains uncertain. Here we use geometric morphometrics to capture the shape of the elbow joint (i.e., the anterior articular surface of the distal humerus) in a wide sample of extant mammals of known behavior to determine how elbow anatomy reflects forearm use. We then employ this information to investigate the predatory behavior of Thylacoleo . A principal components analysis indicates that Thylacoleo is the only carnivorous mammal to cluster with extant taxa that have an extreme degree of forearm maneuverability, such as primates and arboreal xenarthrans (pilosans). A canonical variates analysis confirms that Thylacoleo had forearm maneuverability intermediate between wombats (terrestrial) and arboreal mammals and a much greater degree of maneuverability than any living carnivoran placental. A linear discriminant analysis computed to separate the elbow morphology of arboreal mammals from terrestrial ones shows that Thylacoleo was primarily terrestrial but with some climbing abilities. We infer from our results that Thylacoleo used its forelimbs for grasping or manipulating prey to a much higher degree than its supposed extant placental counterpart, the African lion ( Panthera leo ). The use of the large and retractable claw on the semiopposable thumb of Thylacoleo for potentially slashing and disemboweling prey is discussed in the light of this new information." @default.
- W2346004777 created "2016-06-24" @default.
- W2346004777 creator A5035565249 @default.
- W2346004777 creator A5050219538 @default.
- W2346004777 creator A5087297431 @default.
- W2346004777 date "2016-05-06" @default.
- W2346004777 modified "2023-09-30" @default.
- W2346004777 title "Ecomorphological determinations in the absence of living analogues: the predatory behavior of the marsupial lion (<i>Thylacoleo carnifex</i>) as revealed by elbow joint morphology" @default.
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