A Unique Late Triassic Dinosauromorph Assemblage Reveals Dinosaur Ancestral Anatomy and Diet

  title={A Unique Late Triassic Dinosauromorph Assemblage Reveals Dinosaur Ancestral Anatomy and Diet},
  author={S{\'e}rgio Furtado Cabreira and Alexander Wilhelm Armin Kellner and S{\'e}rgio Dias-da-silva and L{\'u}cio Roberto da Silva and Mario Bronzati and J{\'u}lio C. A. Marsola and Rodrigo Temp M{\"u}ller and Jonathas S. Bittencourt and Brunna Jul’Armando Batista and Tiago Raugust and Rodrigo Carrilho and Andr{\'e} Brodt and Max Cardoso Langer},
  journal={Current Biology},

Gnathovorax cabreirai: a new early dinosaur and the origin and initial radiation of predatory dinosaurs

An ecomorphological analysis employing dental traits indicates that herrerasaurids occupy a particular area in the morphospace of faunivorous dinosaurs, which partially overlaps the area occupied by post-Carnian theropods, indicating that her rerasaurid dinosaurs preceded the ecological role that later would be occupied by large to medium-sized theropoda.

Taxonomic and phylogenetic reassessment of a large-bodied dinosaur from the earliest dinosaur-bearing beds (Carnian, Upper Triassic) from southern Brazil

The reassessment of a dinosaur specimen from Brazil, informally known as the ‘Big Saturnalia’, a supposed large-sized sauropodomorph unearthed at the ’Cerro da Alemoa’ locality in Santa Maria municipality, Rio Grande do Sul State, results in herrerasaurid affinities instead.

An exceptionally preserved association of complete dinosaur skeletons reveals the oldest long-necked sauropodomorphs

This work presents an association of complete and exceptionally well-preserved dinosaur skeletons that represent a new species, which is recovered as a member of a clade solely composed of Gondwanan Triassic taxa, suggesting that the ability to feed on high vegetation was a key trait achieved along the early Norian.

A dinosaur ilium from the Late Triassic of Brazil with comments on key-character supporting Saturnaliinae.

This study increases the distribution of dinosaur remains in fossiliferous units from southern Brazil and adds to the discussion regarding intraspecific variation and its implications in the phylogeny of early dinosaurs.


Lagosuchus talampayensis is here considered a senior synonym of “Marasuchus lilloensis” (Romer, 1972) and its conclusions have implications in the knowledge about early dinosauromorph diversity and the taxonomic richness of the group in the Chañares Formation.

The osteology of the early-diverging dinosaur Daemonosaurus chauliodus (Archosauria: Dinosauria) from the Coelophysis Quarry (Triassic: Rhaetian) of New Mexico and its relationships to other early dinosaurs

The osteology of the unusual early-diverging dinosaur Daemonosaurus chauliodus from the latest Triassic Coelophysis Quarry in northern New Mexico, USA is fully detail and demonstrates that members of the original diversification of dinosaurs survived until nearly the end of the Triassic Period.

Non-dinosaurian dinosauromorphs from the Chinle Formation (Upper Triassic) of the Eagle Basin, northern Colorado: Dromomeron romeri (Lagerpetidae) and a new taxon, Kwanasaurus williamparkeri (Silesauridae)

The recognition of K. williamparkei further demonstrates the predominantly Late Triassic diversity and widespread geographic distribution across Pangea of the sister clade to Asilisaurus, here named Sulcimentisauria, and suggests a strong herbivorous dietary specialization among silesaurids.

New Specimen Sheds Light on the Anatomy and Taxonomy of the Early Late Triassic Dinosauriforms from the Chañares Formation, NW Argentina

The morphology of the new specimen is completely congruent with that of specimens of Pseudolagosuchus major, bolstering the hypothesis that the latter species is a subjective junior synonym of Lewisuchus admixtus.



Basal dinosauriform and theropod dinosaurs from the mid–late Norian (Late Triassic) of Poland: implications for Triassic dinosaur evolution and distribution

The rise of dinosaurs during the Triassic is a widely studied evolutionary radiation, but there are still many unanswered questions about early dinosaur evolution and biogeography that are hampered

Non-dinosaurian Dinosauromorpha

Abstract Ichnological evidence suggests that dinosauromorphs originated by the Early Triassic, and skeletal remains of non-dinosaur representatives of the clade occur from the Anisian to the end of

A new early dinosaur (Saurischia: Sauropodomorpha) from the Late Triassic of Argentina: a reassessment of dinosaur origin and phylogeny

The new evidence presented here demonstrates that dinosaurs first appeared in the fossil record as a diverse group, although they were a numerically minor component of faunas in which they occur.

New stem-sauropodomorph (Dinosauria, Saurischia) from the Triassic of Brazil

A new Late Triassic dinosaur from the Santa Maria Formation of Rio Grande do Sul, southern Brazil is reported, showing dinosaur plesiomorphies together with some neotheropod traits.

Dinosaurian precursors from the Middle Triassic of Argentina: Marasuchus lilloensis, gen. nov.

Several synapomorphies unite Marasuchus and dinosaurs (as Dinosauriformes) to the exclusion of the contemporary dinosauromorph Lagerpeton and pterosaurs.

The origin and early radiation of dinosaurs

A New Sauropodomorph Dinosaur from the Early Jurassic of Patagonia and the Origin and Evolution of the Sauropod-type Sacrum

The dental and postcranial anatomy of Leonerasaurus supports its close affinities with basal sauropods, and shows that the characteristic sauropod body plan evolved gradually, with a step-wise pattern of character appearance.

Hindlimb Osteology and Distribution of Basal Dinosauromorphs from the Late Triassic of North America

An ontogenetic series of the femur of Dromomeron indicates that some character states previously used in phylogenetic analyses of early dinosaurs may be ontogenetically variable.


  • J. Dzik
  • Environmental Science, Geography
  • 2003
Abstract An accumulation of skeletons of the pre-dinosaur Silesaurus opolensis, gen. et sp. nov. is described from the Keuper (Late Triassic) claystone of Krasiejów in southern Poland. The strata are

Dinosaurian precursors from the Middle Triassic of Argentina: Lagerpeton chanarensis

There is no evidence that Lagerpeton and other small-bodied dinosauromorphs in the Los Chanares fauna, namely “Lagosuchus” lilloensis, comprise a monophyletic group.