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Evolution of the sa...
Evolution of the sabertooth mandible: A deadly ecomorphological specialization
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Piras, P. (author)
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- Silvestro, Daniele (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences
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Carotenuto, F. (author)
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Castiglione, S. (author)
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Kotsakis, A. (author)
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Maiorino, L. (author)
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Melchionna, M. (author)
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Mondanaro, A. (author)
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Sansalone, G. (author)
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Serio, C. (author)
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Vero, V. A. (author)
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Raia, P. (author)
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(creator_code:org_t)
- Elsevier BV, 2018
- 2018
- English.
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In: Palaeogeography Palaeoclimatology Palaeoecology. - : Elsevier BV. - 0031-0182. ; 496, s. 166-174
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Saber-toothed cats were armed with formidable weapons. They evolved a number of highly derived morphological features, most notably a pair of extremely long upper canines, which makes them unique within the felid family. Although the sabertooth character evolved several times among carnivorous mammals, sabertooth clades mostly had disjunctive occurrences both in space and time, and no sabertooth is alive today. We studied the rates of phenotypic and taxonomic diversification in the mandible of sabertooths, as compared to the rates calculated for both extinct and extant conical toothed cats. We found that the mandible's shape and physical properties in sabertooth clades evolved at distinctly higher rates than the rest of the felid tree. In addition, sabertooths had similar speciation rate to conical toothed cats, but statistically higher extinction rate. The wealth of morphological specializations required to be a sabertooth, and their tendency to focus on large-sized species as prey, was likely responsible for such high extinction rate, and for the peculiar, disjunctive patterns of sabertooth Glade occurrence in the fossil record.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geologi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geology (hsv//eng)
Keyword
- Machairodontinae
- Felidae
- Speciation rate
- Extinction rate
- Phenotypic evolutionary rate
- RRphylo
- leopard neofelis-nebulosa
- extinction risk
- fossil record
- phylogenetic
- signal
- cranial morphology
- copes rule
- r package
- carnivora
- speciation
- diversity
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Piras, P.
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Silvestro, Danie ...
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Carotenuto, F.
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Castiglione, S.
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Kotsakis, A.
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Maiorino, L.
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show more...
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Melchionna, M.
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Mondanaro, A.
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Sansalone, G.
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Serio, C.
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Vero, V. A.
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Raia, P.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Geology
- Articles in the publication
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Palaeogeography ...
- By the university
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University of Gothenburg