Did the thylacine violate the costs of carnivory? Body mass and sexual dimorphism of an iconic Australian marsupial
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TLDR
New body mass estimates for 93 adult thylacines are presented, including two taxidermy specimens and four complete mounted skeletons, representing 40 known-sex specimens, using three-dimensional volumetric model-informed regressions and show that prior estimates substantially overestimated average adult thymacine body mass.Abstract:
The relative body masses of predators and their prey strongly affect the predators' ecology. An accurate estimate of the mass of an extinct predator is therefore key to revealing its biology and th...read more
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Collapse of terrestrial mammal food webs since the Late Pleistocene
Evan C. Fricke,Chia Chu Hsieh,Owen Middleton,Daniel Gorczynski,Caroline D. Cappello,Oscar Sanisidro,John Rowan,Jens-Christian Svenning,Lydia Beaudrot +8 more
TL;DR: Fricke et al. as discussed by the authors identified changes to terrestrial mammal food webs globally over the past ~130,000 years using extinct and extant mammal traits, geographic ranges, observed predator-prey interactions, and deep learning models.
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Functional ecological convergence between the thylacine and small prey-focused canids
TL;DR: This article examined the cranium of the thylacine using 3D geometric morphometrics and two quantitative tests of convergence to more precisely determine convergent analogues, within a phylogenetically informed dataset of 56 comparative species across 12 families of marsupial and placental faunivorous mammals.
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The multicausal twilight of South American native mammalian predators (Metatheria, Sparassodonta)
TL;DR: In this paper , the authors used Bayesian analysis to find that speciation and extinction rates of sparassodonts can be correlated with intrinsic biotic factors such as changes in body mass and diversity of sparasso-toothed forms, and extrinsic biotics such as potential prey diversity, and external factors like the atmospheric CO2, sea level, temperature, and uplift of the Andes.
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Convex hull estimation of mammalian body segment parameters
TL;DR: In this paper, the authors obtained accurate values for body segment parameters (BSPs) for gait analysis using convex hulling, where the smallest-possible convex object is constructed.
Journal ArticleDOI
The multicausal twilight of South American native mammalian predators (Metatheria, Sparassodonta)
TL;DR: In this article , the authors investigate the relationship between speciation and extinction rates of sparassodonts and extrinsic biotic factors such as changes in body mass and diversity of sparasso-toothed forms, potential prey diversity, and environmental factors, such as atmospheric CO2, sea level, temperature, and uplift of the Andes.
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