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First freshwater gastropod preserved in amber suggests long-distance dispersal during the Cretaceous Period

Published online by Cambridge University Press:  29 April 2021

Tingting Yu Open the ORCID record for Tingting Yu [Opens in a new window] ,
Thomas A. Neubauer Open the ORCID record for Thomas A. Neubauer [Opens in a new window]  and
Adrienne Jochum
Tingting Yu*
Affiliation:
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, Nanjing210008, China University of Chinese Academy of Sciences, Beijing100049, China
Thomas A. Neubauer
Affiliation:
Department of Animal Ecology and Systematics, Justus Liebig University, 35392Giessen, Germany Naturalis Biodiversity Center, 2300 RA Leiden, The Netherlands
Adrienne Jochum
Affiliation:
Naturhistorisches Museum der Burgergemeinde Bern, 3005 Bern, Switzerland Senckenberg Forschungsinstitut und Naturmuseum, 60325 Frankfurt am Main, Germany
*
Author for correspondence: Tingting Yu, Email: ttyu@nigpas.ac.cn
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Abstract

Burmese amber continues to provide unique insights into the terrestrial biota inhabiting tropical equatorial forests during mid-Cretaceous time. In contrast to the large amount and great diversity of terrestrial species retrieved so far, aquatic biota constitute rare inclusions. Here we describe the first freshwater snail ever preserved in amber. The new species Galba prima sp. nov. belongs in the family Lymnaeidae, today a diverse and near globally distributed family. Its inclusion in terrestrial amber is probably a result of the amphibious lifestyle typical of modern representatives of the genus. The finding of a freshwater snail on the Burma Terrane, back then an island situated at some 1500 km from mainland Asia, has implications for the dispersal mechanisms of Mesozoic lymnaeids. The Cenomanian species precedes the evolution of waterfowl, which are today considered a main vector for long-distance dispersal. In their absence, we discuss several hypotheses to explain the disjunct occurrence of the new species.

Keywords

Burmese amberbiogeographyairborne dispersalpalaeoecologyLymnaeidae
Type
Rapid Communication
Information
Geological Magazine , Volume 158 , Issue 7 , July 2021 , pp. 1327 - 1334
Copyright
© The Author(s), 2021. Published by Cambridge University Press

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Footnotes

a

These authors contributed equally to this work.

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