Loss of Ancient Diversity of Xenarthrans and the Value of Protecting Extant Armadillos, Sloths and Anteaters
@inproceedings{Vizcaino2014LossOA, title={Loss of Ancient Diversity of Xenarthrans and the Value of Protecting Extant Armadillos, Sloths and Anteaters}, author={Sergio Fabi{\'a}n Vizcaino and M. Susana Bargo}, year={2014} }
Abstract
Armadillos, sloths and anteaters represent a small fragment of a much more diverse fossil assemblage of xenarthrans that includes bizarre forms such as the armored glyptodonts and the giant ground sloths. We reconstruct extinct xenarthrans as living animals, describing their basic biology, behaviors and ecological roles. In this contribution we provide two examples of the ecological diversity of xenarthrans in the geological past that largely surpass the one we know today. One is the…
22 Citations
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References
SHOWING 1-10 OF 60 REFERENCES
On the Evolution of Large Size in Mammalian Herbivores of Cenozoic Faunas of Southern South America
- Environmental Science, Geography
- 2012
The impact of the mega-mammal extinction on the post-Pleistocene evolution of plant communities has not been studied for South America, but it is clear that it produced an enormous ecological gap in the herbivorous guild.
Eucholoeops Ameghino, 1887 (Xenarthra, Tardigrada, Megalonychidae) from the Santa Cruz Formation, Argentine Patagonia: implications for the systematics of Santacrucian sloths
- Biology
- 2014
ABSTRACT New well-preserved remains of the megalonychid sloth Eucholoeops Ameghino, 1887 recovered under strict stratigraphic control from late Early Miocene Santa Cruz Formation (c. 19 to 14 Ma;…
The Broken Zig-Zag: Late Cenozoic large mammal and tortoise extinction in South America
- Environmental Science, Geography
- 2003
The idea that human overhunting was the main cause of the extinction in South America is agreed, but according to this interpretation, the slaughtering of mammals was accomplished in a particular climatic, ecological and biogeographical frame.
Evidence for advanced carnivory in fossil armadillos (Mammalia: Xenarthra: Dasypodidae)
- Environmental SciencePaleobiology
- 2003
The features suggest that Macroeuphractus occupied an extreme position in the carnivorous-omnivorous feeding behavior of euphractines, and its large size indicates that it could have easily preyed on hare-sized vertebrates.
Revisiting the Intertropical Brazilian Species Hoplophorus euphractus (Cingulata, Glyptodontoidea) and the Phylogenetic Affinities of Hoplophorus
- Biology
- 2010
A cladistic analysis of 18 taxa, including 13 glyptodont genera and five cingulate outgroups, scored for 151 cranial, dental, and postcranial characters shows that Hoplophorinae and Hop lophorini are both paraphyletic and hasHoplophorus as the sister group to Panochthus based mostly on synapomorphies of the caudal tube.
Determinants of loss of mammal species during the Late Quaternary ‘megafauna’ extinctions: life history and ecology, but not body size
- Environmental ScienceProceedings of the Royal Society of London. Series B: Biological Sciences
- 2002
This analysis shows two general features of the selectivity of Late Quaternary mammal extinctions in Australia, Eurasia, the Americas and Madagascar that are consistent with extinctions being due to interaction with human populations.
The teeth of the “toothless”: novelties and key innovations in the evolution of xenarthrans (Mammalia, Xenarthra)
- Environmental Science, GeographyPaleobiology
- 2009
The combination of tooth features that characterize xenarthrans might be seen as the key innovation for the ecologic diversity developed at least since the Oligocene, breaking the mold of the tribosphenic condition that constrained the evolution of the other major clades of mammals.
Influence of Tertiary paleoenvironmental changes on the diversification of South American mammals: a relaxed molecular clock study within xenarthrans
- BiologyBMC Evolutionary Biology
- 2003
The observed synchronicity between planetary and biological events suggests that global change played a crucial role in shaping the evolutionary history of extant xenarthrans, and these findings open ways to test this hypothesis further in other South American mammalian endemics.
Ecological consequences of Late Quaternary extinctions of megafauna
- Environmental Science, GeographyProceedings of the Royal Society B: Biological Sciences
- 2009
Understanding the past role of giant herbivores provides fundamental insight into the history, dynamics and conservation of contemporary plant communities.
The great American biotic interchange
- Environmental Science, Geography
- 1985
I. The Framework: An Overview.- 1 * A Kaleidoscope of Plates, Faunal and Floral Dispersals, and Sea Level Changes.- 2 * Caribbean Plate Relative Motions.- 3 * Geochronology and Land-Mammal…