The first Triassic vertebrate fossils from Myanmar: Pachypleurosaurs in a marine limestone - NMS Research Repository
Skip to main content
Shared Research Repository
Journal article

The first Triassic vertebrate fossils from Myanmar: Pachypleurosaurs in a marine limestone

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.

Files

File nameDate UploadedVisibilityFile size
236020The20first20Triassic20vertebrate20fossils20from20Myanmar_der1lQF.pdf
29 Oct 2019
Public
735 kB