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

Yu Tingting, Thomas A. Neubauer and Adrienne Jochum
First freshwater gastropod preserved in amber suggests long-distance dispersal during the Cretaceous Period
Geological Magazine (July 2021) 158 (7): 1327-1334

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.


ISSN: 0016-7568
EISSN: 1469-5081
Coden: GEMGA4
Serial Title: Geological Magazine
Serial Volume: 158
Serial Issue: 7
Title: First freshwater gastropod preserved in amber suggests long-distance dispersal during the Cretaceous Period
Affiliation: Chinese Academy of Sciences, Nanjing Institute of Geology and Palaeontology, Nanjing, China
Pages: 1327-1334
Published: 202107
Text Language: English
Publisher: Cambridge University Press, London, United Kingdom
References: 95
Accession Number: 2021-050823
Categories: Invertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sketch map
N09°00'00" - N28°45'00", E92°00'00" - E101°45'00"
Secondary Affiliation: Justus Liebig University, Giessen, DEU, GermanyNaturhistorisches Museum der Burgergemeinde Bern, Bern, CHE, Switzerland
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2021, American Geosciences Institute. Abstract, Copyright, Cambridge University Press. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 202116
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