June 5, 2020

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New fossil from Brazil hints at the origins of the mysterious tanystropheid reptiles

A new species of Triassic reptile from Brazil is a shut cousin of a mysterious...

A new species of Triassic reptile from Brazil is a shut cousin of a mysterious group termed tanystropheids, according to a review posted April eight, 2020 in the open up-access journal PLOS 1 by Tiane De-Oliviera of the Federal University of Santa Maria, Brazil and colleagues.

After the Permian mass extinction, 250 million several years back, reptiles took above world-wide ecosystems. Among the the early groups to look just after this extinction party ended up the tanystropheids, a group of extended-necked animals whose existence are however mysterious, but who ended up nonetheless successful in the Triassic Time period. Even so, the early evolution of this group is improperly understood, as their continues to be are quite uncommon from the Early Triassic.

In this review, De-Oliviera and colleagues explain a new specimen of reptile from Early Triassic rocks of the Sanga do Cabral Formation in southern Brazil. Skeletal comparison implies this specimen, known from continues to be of the hind leg, pelvis, and tail, is the closest known relative of tanystropheids. The researchers identified these continues to be as belonging to a new species, which they named Elessaurus gondwanoccidens. The name derives in element from the Elvish name (Elessar) of a character from Lord of the Rings also known as Aragorn or Strider, chosen as a reference to the fossil animal’s extended legs.

Most tanystropheid fossils are identified in Middle to Late Triassic rocks of Europe, Asia, and North The us, and typically in marine sediments. The existence of Elessaurus in continental deposits of Early Triassic South The us suggests that the origins of this group may well lie in the southern continents, and that their ancestors may well have lived on land before later on species adapted to aquatic life. A clearer perspective of the group’s origins will rely on additional uncommon fossils from this early time in their evolution.

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Quotation: De-Oliveira TM, Pinheiro FL, Stock Da-Rosa ÁA, Dias-Da-Silva S, Kerber L (2020) A new archosauromorph from South The us presents insights on the early diversification of tanystropheids. PLoS 1 fifteen(4): e0230890. https://doi.org/ten.1371/journal.pone.0230890

Funding: This review was financed by the Coordenação de Aperfeiçoamento de Pessoal de Nível Excellent – Brasil (CAPES) – Finance Code 001. Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul (FAPERGS sixteen/2551-0000271-1 to FLP 17/2551-0000816-two to LK) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq 407969/2016- 305758/2017-9 to FLP 313494/2018-five to AASR 306352/2016-eight to SDS 422568/2018- 309414/2019-9 to LK).

Competing Interests: The authors have declared that no competing interests exist.

In your protection you should use this URL to deliver access to the freely available article in PLOS 1: https://journals.plos.org/plosone/article?id=ten.1371/journal.pone.0230890

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