Dinosaur Distribution

Weishampel, David B.; Barrett, Paul M.; Coria, Rodolfo A.; Lœuff, Jean Le; Xu, Xiaodong; Zhao, Xiaohui; Sahni, Ashok; Gomani, Elizabeth M. P.; Noto, Christopher R.

doi:10.1525/california/9780520242098.003.0027

Cited by 244 publications

(400 citation statements)

References 0 publications

Supporting

Mentioning

379

Contrasting

Unclassified

Order By: Relevance

“…Tridactyl footprints from the Late Triassic of the USA, Europe and Africa have been identified as having been made by ornithischians (e.g., Biron and Dutuit, 1981;Mietto, 1985;Olsen and Baird, 1986;Dal Sasso, 2003;Knoll, 2004;Milàn and Gierlinski, 2004;Weishampel et al, 2004). However, a tridactyl pedal morphology similar to that of early ornithischians was present in many Triassic taxa, including basal saurischians, theropods, the earliest sauropodomorphs (e.g., Saturnalia: Langer, 2003), and dinosauromorphs (e.g., Silesaurus: Dzik, 2003).…”

Section: Late Triassic Ornithischians -Fossil Record and Distributionmentioning

confidence: 99%

The origin and early radiation of dinosaurs

Brusatte

Nesbitt

Irmis

et al. 2010

Earth-Science Reviews

242

214

View full text Add to dashboard Cite

Dinosaurs were remarkably successful during the Mesozoic and one subgroup, birds, remain an important component of modern ecosystems. Although the extinction of non-avian dinosaurs at the end of the Cretaceous has been the subject of intense debate, comparatively little attention has been given to the origin and early evolution of dinosaurs during the Late Triassic and Early Jurassic, one of the most important evolutionary radiations in earth history. Our understanding of this keystone event has dramatically changed over the past 25 years, thanks to an influx of new fossil discoveries, reinterpretations of long-ignored specimens, and quantitative macroevolutionary analyses that synthesize anatomical and geological data. Here we provide an overview of the first 50 million years of dinosaur history, with a focus on the large-scale patterns that characterize the ascent of dinosaurs from a small, almost marginal group of reptiles in the Late Triassic to the preeminent terrestrial vertebrates of the Jurassic and Cretaceous. We provide both a biological and geological background for early dinosaur history. Dinosaurs are deeply nested among the archosaurian reptiles, diagnosed by only a small number of characters, and are subdivided into a number of major lineages. The first unequivocal dinosaurs are known from the late Carnian of South America, but the presence of their sister group in the Middle Triassic implies that dinosaurs possibly originated much earlier. The three major dinosaur lineages, theropods, sauropodomorphs, and ornithischians, are all known from the Triassic, when continents were joined into the supercontinent Pangaea and global climates were hot and arid. Although many researchers have long suggested that dinosaurs outcompeted other reptile groups during the Triassic, we argue that the ascent of dinosaurs was more of a matter of contingency and opportunism. Dinosaurs were overshadowed in most Late Triassic ecosystems by crocodile-line archosaurs and showed no signs of outcompeting their rivals. Instead, the rise of dinosaurs was a two-stage process, as dinosaurs expanded in taxonomic diversity, morphological disparity, and absolute faunal abundance only after the extinction of most crocodile-line reptiles and other groups.

show abstract

Section: Late Triassic Ornithischians -Fossil Record and Distributionmentioning

confidence: 99%

The origin and early radiation of dinosaurs

Brusatte

Nesbitt

Irmis

et al. 2010

Earth-Science Reviews

242

214

View full text Add to dashboard Cite

show abstract

“…Late Cretaceous theropod dinosaur remains (including birds) are poorly known in Europe and most of the collected material is represented by isolated and fragmentary bones and teeth , Weishampel et al 2004, Pereda-Suberbiola 2009. Although these remains apparently indicate a great diversity of non-avian theropod dinosaurs in the European archipelago (including abelisauroids, basal tetanurans, carcharodontosaurs, dromaeosaurs, troodontids, ornithomimosaurs, and alvarezsaurids, see Ősi et al 2010 for a review), most specimens cannot be determined beyond family level.…”

Section: Introductionmentioning

confidence: 99%

Additional non-avian theropod and bird remains from the early Late Cretaceous (Santonian) of Hungary and a review of the European abelisauroid record

Ősi

Buffetaut

2011

Annales de Paléontologie

View full text Add to dashboard Cite

-Hitherto unpublished remains of non-avian and avian theropods from the Late Cretaceous (Formation Csehbánya, Santonian) Iharkút locality (western Hungary) are described. Non-avian theropod remains include an abelisaurid femur, which confirms the presence of this theropod family at Iharkút, and a metacarpal and a tibiotarsus from a paravian which may belong to Pneumatoraptor fodori, previously described from Iharkút. Birds are represented by two femora which clearly belong to enantiornithines, possibly to Bauxitornis,

show abstract

“…) and the the temporally equivalent and geographically adjacent faunas of the Tar Heel and Coachman Formations (fauna includes Dryptosaurus aquilunguis and Appalachiosaurus montgomeriensis)(e.g., Baird & Horner, 1979;Weishampel & Young, 1996;Schwimmer et al, 2015). The presence of two tyrannosauroids in the same ecosystem is also known in a few units from Laramidia (e.g., Weishampel et al, 2004).…”

Section: Introductionmentioning

confidence: 91%

“…While in the west, it is known that the ancestors of the iconic Tyrannosaurus rex evolved reduced forelimbs and massive, powerful skulls, the tyrannosaurs of the eastern portion of North America, at that time a landmass called Appalachia (e.g., Sampson et al, 2010;Loewen et al, 2013), have remained more obscure, and rarely are associated or partial skeletons ever found. The two most complete tyrannosaurs from Late Cretaceous continent described so far are Dryptosaurus aquilunguis and Appalachiosaurus montgomeriensis, originally known from the Maastrichtian New Egypt Formation of New Jersey 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 and from the middle Campanian Demopolis Chalk Formation of Alabama, respectively (e.g., Cope, 1866;Marsh, 1877;Weishampel et al, 2004;Carr, Williamson & Schwimmer, 2005;Weishampel, 2006;Brusatte, Benson & Norell, 2011). Additional remains assigned to Dryptosaurus have been recovered from the Marshalltown Formation-bearing Ellisdale microfossil site, the Mt.…”

Section: Introductionmentioning

confidence: 99%

Theropod specimens from the Navesink Formation and their implications for the Diversity and Biogeography of Ornithomimosaurs and Tyrannosauroids on Appalachia

Brownstein

2017

Preprint

View full text Add to dashboard Cite

The sparse dinosaur record of eastern North America has rendered the dinosaurs of the Late Cretaceous landmass of Appalachia obscure. This landmass, isolated from the western landmass Laramidia by a great inland sea known as the Western Interior Seaway, may have been a safe haven for dinosaur species which would be replaced on Appalachia's western contemporary. An excellent example of these isolated forms are the tyrannosaurs of Appalachia, which have not only been grouped outside Tyrannosauridae proper in phylogenetic analyses, but also bare distinct morphologies, including a gigantic manus in one form, from these 'western tyrants'. However, Appalachian tyrannosaurs are only represented currently by the two valid taxa Dryptosaurus aquilunguis and Introduction.

show abstract

Dinosaur Distribution

Cited by 244 publications

References 0 publications

The origin and early radiation of dinosaurs

The origin and early radiation of dinosaurs

Additional non-avian theropod and bird remains from the early Late Cretaceous (Santonian) of Hungary and a review of the European abelisauroid record

Theropod specimens from the Navesink Formation and their implications for the Diversity and Biogeography of Ornithomimosaurs and Tyrannosauroids on Appalachia

Contact Info

Product

Resources

About