Adaptations to Aquatic, Arboreal, Fossorial and Cursorial Habits in Mammals. III. Fossorial Adaptations

@article{ShimerAdaptationsTA,
  title={Adaptations to Aquatic, Arboreal, Fossorial and Cursorial Habits in Mammals. III. Fossorial Adaptations},
  author={Hervey Woodburn Shimer},
  journal={The American Naturalist},
  volume={37},
  pages={819 - 825}
}
THE purpose of the following article is to summarize a few of -the principal modifications in external shape and in the skeleton independently acquired by mammals in different orders which have become wholly or partially adapted to a life beneath the surface of the ground. The highest specialization in this clirection is found, as we should expect, in those forms which secure not only safety but also their food within the earth (c. g. the moles). Such forms are completely fossorial. On the… Expand
Can they dig it? Functional morphology and semifossoriality among small‐eared shrews, genus Cryptotis (Mammalia, Soricidae)
TLDR
Three basic modes of substrate adaptation are present within Cryptotis: a primarily terrestrial mode, with species that are capable of burrowing, but lack adaptations to increase digging efficiency, and a semifossorial mode with species whose forelimbs bones show strong muscle attachment areas and increased mechanical advantage. Expand
Skull morphology of the Brazilian shrew mouse Blarinomys breviceps (Akodontini; Sigmodontinae), with comparative notes on Akodontini rodents
TLDR
Through a detailed osteological description and geometric morphometrics approach, it is shown the distinctiveness of the skull of Blarinomys when compared with other Akodontini. Expand
Ulna of Extant Xenarthrans: Shape, Size, and Function
TLDR
A sample of xenarthrans was analyzed in this work from a functional and ecological perspective, using 2-D geometric morphometry to show that the morphospace is strongly influenced by differences in length of the olecranon with respect to the shaft between the three clades. Expand
New Insights into the Biology of the Permian Genus Cistecephalus (Therapsida, Dicynodontia)
TLDR
It is proposed that the high degree of binocular vision evident in Cistecephalus developed in response to predatory (insectivory) and/or nocturnal habits and that it is unrelated to a scansorial lifestyle. Expand
Evolutionary morphology of the Tenrecoidea (Mammalia) hindlimb skeleton
TLDR
Results from qualitative and quantitative analyses demonstrate remarkable diversity in several aspects of knee and hip joint skeletal form that are supportive of function‐based hypotheses, and consistent with studies on nontenrecoid eutherian postcranial adaptation. Expand
Carpal‐metacarpal specializations for burrowing in South American octodontoid rodents
TLDR
The phylogenetic distribution of traits shows that the most derived carpal and metacarpal morphologies occur among subterranean octodontoids, also possessing important craniodental adaptations, and supports the hypothesis that the acquisition of digging specializations would have been linked to increasing burrowing frequency in some lineages. Expand
Extraordinary fossorial adaptations in the oligocene palaeanodonts Epoicotherium and Xenocranium (Mammalia)
New fossils of the rare Oligocene mammals Xenocranium and Epoicotherium add information on their skulls and provide the first information on their postcranial skeletons. These epoicotheres, theExpand
Locomotor correlates of the scapholunar of living and extinct carnivorans
TLDR
3D‐scanning techniques indicate that the scapholunar is a good indicator of ecology and functional morphology and can be another tool to use in modern and fossil carnivorans to reconstruct extinct ecologies and locomotor behaviors. Expand
Quantitative Morphological Proxies for Fossoriality in Small Mammals
TLDR
This study presents several quantitative indices of the morphology of burrowing mammals based on 20 measurements of skull and skeletal morphology taken from 123 different mammalian species, both burrowing and nonburrowing, indicating that these quantitative proxies provide an important basis for comparisons of fossorial adaptations across divergent mammalian clades. Expand
Analyse de la morphologie de la main chez des espèces de Ctenomys de l’Uruguay (Rodentia : Octodontidae). Adaptations au fouissage et implications évolutives
TLDR
The morphology of the hand of Ctenomys was defined at least in the beggining of the Pleistocene and the morphology of metacarpal-phälangian and distal interphalangian joints is related with the digging « scratcher » model. Expand
...
1
2
3
4
5
...