Body size of Smilodon (Mammalia: Felidae)

  title={Body size of Smilodon (Mammalia: Felidae)},
  author={Per Christiansen and John M. Harris},
  journal={Journal of Morphology},
The body masses of the three large saber‐toothed machairodontines, Smilodon gracilis, S. fatalis, and S. populator, were estimated on the basis of 36 osteological variables from the appendicular skeleton of extant felids. A new model is introduced that takes the reliability of the predictor equations into account, since mass estimates are more reliable when computed from multiple variables per bone. At a body mass range of 55–100 kg, S. gracilis was comparable in size to extant jaguars, and S… 
Body mass estimation in Triassic cynodonts from Argentina based on limb variables
in from based on Body mass estimations for extinct taxa are fundamental in palaeobiological reconstructions, but little work has been done on this topic for non-mammaliaform cynodonts (NMC), the
Body Mass Estimation in Amphicyonid Carnivoran Mammals: A Multiple Regression Approach from the Skull and Skeleton
The body masses of sixteen species of amphicyonids (Mammalia, Carnivora, Amphicyonidae) from the New and Old World were estimated on the basis of 86 osteological variables measured from the
How large are the extinct giant insular rodents? New body mass estimations from teeth and bones.
The results indicate that under absence of predation, resource availability (island area) is the key factor that determines the size of the Canariomys sp.
Body mass estimation in xenarthra: A predictive equation suitable for all quadrupedal terrestrial placentals?
Surprisingly, although obtained from ungulates and xenarthrans, these five selected equations were also able to predict the body mass of species from groups as different as rodents, carnivores, hyracoideans, or tubulidentates, suggesting the presence of a complex common allometric pattern for all quadrupedal placentals.
The postcranial remains of the saber-toothed cat Smilodon populator dealt with here corresponds to the first occurrence of the taxon in the State of São Paulo, filling a gap in its geographical
An extremely large saber-tooth cat skull from Uruguay (late Pleistocene–early Holocene, Dolores Formation): body size and paleobiological implications
Abstract Among the three recognized species of Smilodon, S. populator is the largest in size and has the widest distribution across South America. The present contribution describes an almost
Occurrence of the sabretooth cat Smilodon populator (Felidae, Machairodontinae) in the Cuvieri cave, eastern Brazil
A specimen found in the Cuvieri Cave in Brazil based on small bones (calcaneal, ectocuneiform, and phalanges) is described and commented here and is comparable in size to that of an adult lioness and represented the largest predator in the region.
Evidence for unusual size dimorphism in a fossil ailurid
A second nearly complete skeleton of the fossil ailurid Pristinailurus bristoli was recently recovered from the Hemphillian (late Miocene) Gray Fossil Site of northeast Tennessee. It appears to be


Body size in proboscideans, with notes on elephant metabolism
Both the basal and the field metabolic rates of extant elephants are lower than predicted for a hypothetical mammal, in accordance with their body size and subsistence on low-quality foods.
Body mass in large extant and extinct carnivores
Two of the extinct carnivores (Smilodon fatalis and Panthera atrox) are estimated to be as much as one and a half times heavier than previously thought.
Adaptive differences in the body proportions of large felids.
  • W. Gonyea
  • Environmental Science
    Acta anatomica
  • 1976
The lion was found to have the body proportions of a forest felid, yet it also resides in low structured habitats and it is postulated that the utilization of large prey by the lion limits the possibilities for morphological adaptations for speed.
What size were Arctodus simus and Ursus spelaeus (Carnivora: Ursidae)?
Body masses of the giant short-faced bear and the cave bear were calculated with equations based on a long-bone dimensions:body mass proportion ratio ratio in extant carnivores, finding that large Arctodus specimens considerably exceeded even the largest extant ursids in mass.
Allometry and Biomechanics: Limb Bones in Adult Ungulates
Power-law equations of the type y = mxb (allometric equations) were used to compare a parameter y, such as brain weight, to another parameter x, often body weight, in individuals representing species of different size within a phyletic group and produced consistent empirical descriptions of the effects of growth and body size differences in adults.
Relationships between North and South American Smilodon
ABSTRACT Middle and Late Pleistocene representatives of the genus Smilodon in South and North America are here assigned to different species. The South American S. populator, which existed east of
Locomotor behaviour in Plio-Pleistocene sabre-tooth cats: a biomechanical analysis
The locomotor behaviour of some large extinct carnivores, including several species of Plio-Pleistocene sabre-tooth cats, is here reconstructed, based on a comparison of the cross-sectional geometric
Canine tooth strength and killing behaviour in large carnivores
The canines of sabretooth cats are shown to be more similar in shape and strength characteristics to those of living canids than felids, whereas those of the borophagine dogs and the dire wolf are closer to modern hyaenas.
Mass allometry of the appendicular skeleton in terrestrial mammals
An analysis of long bone mass to body mass in 64 different species of mammals, spanning three orders of magnitude in body mass, is presented, suggesting that the largest sauropod dinosaurs approached this limit.
Walker's mammals of the world
From aardwolves and bandicoots to yapoks and zorillas, Ernest P. Walker's Mammals of the World is the most comprehensive-the pre-eminent-reference work on mammals. Now, completely revised and