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Possible egg masses from amphibians, gastropods, and insects in mid-Cretaceous Burmese amber

Xing, L; Wang, D; Li, G; McKellar, RC; Bai, M; Chen, H; Evans, SE; (2019) Possible egg masses from amphibians, gastropods, and insects in mid-Cretaceous Burmese amber. Historical Biology 10.1080/08912963.2019.1677642. (In press). Green open access

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Abstract

The eggs of fish, amphibians, and many invertebrates are soft, delicate structures that are only rarely preserved in the fossil record. Here we report egg masses preserved as inclusions in mid-Cretaceous amber deposits of Myanmar. Of five specimens recovered, three of the egg masses probably pertain to insects, but the other two appear different. One mass is composed of relatively stiff eggs that retain their shape throughout the mass and may be linked by mucoid strands. This morphology resembles that of some terrestrial molluscs. The second mass is composed of softer eggs that have compressed one another so that their shapes are strongly distorted within the mass. These eggs most closely resemble those of amphibians. Given the forest environment reconstructed for the amber locality, the eggs were presumably attached on or close to the resin producing tree.

Type: Article
Title: Possible egg masses from amphibians, gastropods, and insects in mid-Cretaceous Burmese amber
Open access status: An open access version is available from UCL Discovery
DOI: 10.1080/08912963.2019.1677642
Publisher version: https://doi.org/10.1080/08912963.2019.1677642
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Myanmar, fossil eggs, anura, mollusca, insecta, Mesozoic
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Cell and Developmental Biology
URI: https://discovery.ucl.ac.uk/id/eprint/10089774
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