🧬 The Felid Wiki — 3,000 research summaries

This overview examines how the neck and skull anatomy of Smilodon and other sabertooths reveal the mechanics of the killing bite. Because the jaw muscles alone produced a comparatively weak bite, much…

This overview surveys the abundant evidence of disease, injury, and skeletal abnormality preserved in Smilodon fatalis from Rancho La Brea. The asphalt deposits yield bones showing healed fractures, a…

This overview examines the idea that dietary and predatory specialization made many extinct big cats especially vulnerable to extinction. Hypercarnivorous predators such as sabertooths, with anatomy f…

This overview surveys efforts to date the Rancho La Brea deposits and place their sabertooth fossils in time. Because the asphalt pits accumulated remains over tens of thousands of years and because p…

This overview examines how radiocarbon dating is applied to the bones of late Pleistocene cats to reconstruct their chronologies and last appearances. Directly dating individual fossils of Smilodon, c…

This overview explains the long-recognized morphological divide among sabertooth cats between scimitar-toothed forms, such as Homotherium, and dirk-toothed forms, such as Smilodon and Megantereon. Sci…

This overview surveys studies of the fine structure of sabertooth canines, focusing on the serrations, or denticles, along their cutting edges and the internal histology of the teeth. Dirk-toothed cat…

This overview examines whether Smilodon fatalis showed pronounced size differences between males and females, a question with implications for its social system. Because the La Brea sample is large, r…

This overview surveys the stable isotope techniques used to reconstruct the diets of extinct cats. Carbon isotopes in bone and tooth collagen and enamel record whether prey fed on plants using differe…

This overview explains why the Rancho La Brea asphalt seeps preserve such an extraordinary concentration of sabertooths and other carnivores. Natural petroleum seeping to the surface forms sticky asph…

This overview examines the record of Panthera atrox at Rancho La Brea, where the American lion is far less common than the sabertooth Smilodon but is nonetheless represented by valuable cranial and po…

This overview takes a deep-time perspective on the rise and fall of sabertooth cats, whose machairodont lineage flourished for more than ten million years before vanishing in the late Pleistocene. Aft…

This overview examines the prey-restraint hypothesis, which holds that sabertooths, especially robust dirk-toothed forms like Smilodon, depended on overpowering and immobilizing prey with their foreli…

This overview examines the timing of extinction among the great carnivores of Rancho La Brea, including the sabertooth Smilodon fatalis and the American lion, whose latest dated remains cluster near t…

This overview surveys how palaeontologists distinguish the three generally recognized species of the sabertooth genus Smilodon. The earliest and smallest, Smilodon gracilis, appears in the early Pleis…

This overview reviews what is known about when and why Smilodon disappeared, with the best-dated records clustering near the end of the Pleistocene around the time of widespread megafaunal extinction…

Using finite element analysis, the authors built a high-resolution digital model of a Smilodon fatalis skull and compared its mechanical performance against a modern lion. The simulations showed that…

Colin R. McHenry, Stephen Wroe, Philip D. Clausen, Karen Moreno, Eleanor Cunningham · Proceedings of the National Academy of Sciences · 2007

This influential book provides a comprehensive illustrated survey of the cat family and its extinct members, combining scientific synthesis with detailed reconstructions of fossil felids and their sab…

Alan Turner, Mauricio Anton · Columbia University Press · 1997

This influential study quantified broken teeth among large carnivores from the Rancho La Brea asphalt deposits, including Smilodon fatalis, dire wolves, American lions, and coyotes. Tooth breakage rat…

Blaire Van Valkenburgh, Fritz Hertel · Science · 1993