San, Khaing Khaing, Fraser, Nicholas C, Foffa, Davide, Rieppel, Olivier and Brusatte, Stephen L (2019) The first Triassic vertebrate fossils from Myanmar: Pachypleurosaurs in a marine limestone. Acta Palaeontologica Polonica, 64 (2). pp. 357-362. ISSN 1732-2421

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Abstract

As ecosystems recovered from the end-Permian extinction, many new animal groups proliferated in the ensuing Triassic. Among these were the sauropterygians, reptiles that evolved from terrestrial ancestors and transitioned to a marine environment. The first sauropterygians were small, marine-adapted taxa such as pachypleurosaurs, which are known from Middle–Late Triassic deposits, particularly in the Tethyan realm of Europe, and more recently from Lagerstätten in southwestern China. Here we report two pachypleurosaurs from Myanmar, the first Triassic vertebrate fossils from the country. These specimens demonstrate that their entombing rocks in northern Shan State, which have received less study than terrestrial sediments in southern Shan State and whose ages have long been uncertain, are Triassic. The specimens may be among the oldest pachypleurosaurs globally, potentially corroborating biogeographic scenarios that posit an eastern Tethyan origin for pachypleurosaurs, and raise the potential for future discoveries of well-preserved Triassic reptiles in Myanmar.

Item Type: Article
Subjects: D History General and Old World > D History (General) > D051 Ancient History
D History General and Old World > DE The Mediterranean Region. The Greco-Roman World
D History General and Old World > DS Asia
Q Science > QL Zoology
Theme: Understanding the natural world
Department: Natural Sciences
Related URLs:
Depositing User: Ross Anderson
Date Deposited: 19 Aug 2019 13:42
Last Modified: 19 Aug 2019 13:42
URI: http://repository.nms.ac.uk/id/eprint/2360

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