Estimation of maximum body size in fossil species: A case study using Tyrannosaurus rex [PDF]
Ecology and EvolutionAmong extant species, the ability to sample the extremes of body size—one of the most useful predictors of an individual's ecology—is highly unlikely. This improbability is further exaggerated when sampling the already incomplete fossil record.
Jordan C. Mallon, David W. E. Hone
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Ontogenetic Changes in Endocranial Anatomy in Gorgosaurus libratus (Theropoda: Tyrannosauridae) Provide Insight Into the Evolution of the Tyrannosauroid Endocranium. [PDF]
J Comp NeurolChanges through growth (ontogenetic) in the braincase of the eutyrannosaurian tyrannosauroid Gorgosaurus libratus are discussed. Most notably, brain cavity endocasts of immature Gorgosaurus are found to more clearly show details of the brain morphology than more mature individuals, a finding that has implications for improving dinosaur paleoneurology ...
Voris JT +4 more
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Skull morphology and histology indicate the presence of an unexpected buccal soft tissue structure in dinosaurs. [PDF]
J AnatA combined approach of osteology and histology was used to examine the cheek regions of dinosaurs. Strong evidence was found for a soft tissue in this region connecting the zygoma to the mandible, here named the ‘exoparia’. Abstract Unlike mammals, reptiles typically lack large muscles and ligaments that connect the zygoma to the mandible.
Sharpe HS +7 more
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The comparative energetics of the turtles and crocodiles. [PDF]
Ecol Evol, 2022 This paper discusses patterns in Dynamic Energy Budget parameters and implied traits that we found for turtles and crocodiles. We explain, for instance, why the proportionality of weight at birth with the square root of ultimate weight points to problems with water loss and nitrogen‐waste accumulation.
Marn N, Kooijman SALM.
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A Problematic Tyrannosaurid (Dinosauria: Theropoda) Skeleton and Its Implications for Tyrannosaurid Diversity in the Horseshoe Canyon Formation (Upper Cretaceous) of Alberta. [PDF]
Anat Rec (Hoboken), 2020 ABSTRACT Several published censuses have noted the presence of two tyrannosaurids, Daspletosaurus sp. and Albertosaurus sarcophagus, within the Upper Cretaceous Horseshoe Canyon Formation of Alberta. Although A. sarcophagus is known from more than a dozen major discoveries in these strata, Daspletosaurus sp.
Mallon JC +3 more
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A large tyrannosaurid from the Late Cretaceous (Campanian) of North America [PDF]
Scientific ReportsThe Tyrannosauridae emerged as the dominant large predators in Laurasia during the Late Cretaceous. Their evolution in North America culminated with the replacement of Albertosaurinae, Daspletosaurinae, and Teratophonei, with masses of 2-3 tonnes, by the
Nicholas R. Longrich +3 more
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The first deep-snouted tyrannosaur from Upper Cretaceous Ganzhou City of southeastern China [PDF]
Scientific ReportsTyrannosaurids were the most derived group of Tyrannosauroidea and are characterized by having two body plans: gracile, long-snouted and robust, deep-snouted skulls. Both groups lived sympatrically in central Asia.
Wenjie Zheng +3 more
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Correction: a 'terror of tyrannosaurs': the first trackways of tyrannosaurids and evidence of gregariousness and pathology in tyrannosauridae. [PDF]
PLoS ONE, 2015 [This corrects the article DOI: 10.1371/journal.pone.0103613.].
PLOS ONE Staff
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New information on paleopathologies in non-avian theropod dinosaurs: a case study on South American abelisaurids [PDF]
BMC Ecology and EvolutionStudies on pathological fossil bones have allowed improving the knowledge of physiology and ecology, and consequently the life history of extinct organisms.
Mattia A. Baiano +3 more
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The fast and the frugal: Divergent locomotory strategies drive limb lengthening in theropod dinosaurs. [PDF]
PLoS ONE, 2020 Limb length, cursoriality and speed have long been areas of significant interest in theropod paleobiology, since locomotory capacity, especially running ability, is critical in the pursuit of prey and to avoid becoming prey.
T Alexander Dececchi +4 more
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