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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Increases in sampling support the southern Gondwanan hypothesis for the origin of dinosaurs

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Author(s):
Marsola, Julio C. A. [1, 2] ; Ferreira, Gabriel S. [3, 2] ; Langer, Max C. [2] ; Button, David J. [4] ; Butler, Richard J. [1]
Total Authors: 5
Affiliation:
[1] Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, W Midlands - England
[2] Univ Sao Paulo, FFCLRP, Lab Paleontol, BR-14040901 Ribeirao Preto, SP - Brazil
[3] Eberhard Karls Univ Tubingen, Fachbereich Geowissensch, Holderlinstr 12, D-72074 Tubingen - Germany
[4] Nat Hist Museum, Dept Earth Sci, Cromwell Rd, London SW7 5DB - England
Total Affiliations: 4
Document type: Journal article
Source: Palaeontology; v. 62, n. 3, p. 473-482, MAY 2019.
Web of Science Citations: 1
Abstract

Dinosaurs were ubiquitous in terrestrial ecosystems through most of the Mesozoic and are still diversely represented in the modern fauna in the form of birds. Recent efforts to better understand the origins of the group have resulted in the discovery of many new species of early dinosaur and their closest relatives (dinosauromorphs). In addition, recent re-examinations of early dinosaur phylogeny have highlighted uncertainties regarding the interrelationships of the main dinosaur lineages (Sauropodomorpha, Theropoda and Ornithischia), and questioned the traditional hypothesis that the group originated in South Gondwana and gradually dispersed over Pangaea. Here, we use an historical approach to examine the impact of new fossil discoveries and changing phylogenetic hypotheses on biogeographical scenarios for dinosaur origins over 20years of research time, and analyse the results in the light of different fossil record sampling regimes. Our results consistently optimize South Gondwana as the ancestral area for Dinosauria, as well as for more inclusive clades including Dinosauromorpha, and show that this hypothesis is robust to increased taxonomic and geographic sampling and divergent phylogenetic results. Our results do not find any support for the recently proposed Laurasian origin of dinosaurs and suggest that a southern Gondwanan origin is by far the most plausible given our current knowledge of the diversity of early dinosaurs and non-dinosaurian dinosauromorphs. (AU)

FAPESP's process: 13/23114-1 - Review of the Carnian (Neotriassic) Sauropodomorpha (Dinosauria) with description of new elements of Saturnalia tupiniquim
Grantee:Júlio Cesar de Almeida Marsola
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 14/25379-5 - Evolution, morphology, and development of the pterygoid region in Testudines, focusing on Pleurodira
Grantee:Gabriel de Souza Ferreira
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 14/03825-3 - The origin and rise of dinosaurs in Gondwana (late Triassic - early Jurassic)
Grantee:Max Cardoso Langer
Support type: Research Projects - Thematic Grants
FAPESP's process: 16/02473-1 - New material of Laquintasaura venezuelae (Ornithischia, Dinosauria), its phylogenetic significance for the early radiation of dinosaurs
Grantee:Júlio Cesar de Almeida Marsola
Support type: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 16/03934-2 - Evolution and development of the jaw adductor chamber in turtles
Grantee:Gabriel de Souza Ferreira
Support type: Scholarships abroad - Research Internship - Doctorate