Journal article

Publication year: 2022

Journal: Cretaceous Research

Volume number: 140

ISSN: 0195-6671

eISSN: 1095-998X

DOI Link: https://doi.org/10.1016/j.cretres.2022.105359

Publisher: Elsevier

Abstract: 
Land snails in mid-Cretaceous Burmese amber (ca. 99-98 Ma) have attracted great interest from pale-ontologists in recent years. Here we describe a new species of the genus Archaeocyclotus belonging to the family Cyclophoridae, from a well-preserved fossil, using classic light microscopy and modern micro-CT scans with computer 3D reconstructions. The shell of Archaeocyclotus brevivillosus sp. nov. is charac-terized by short, densely implanted periostracal hairs that emerge at growth line margins from the shell periphery. This new species is the eighth cyclophorid species described from Burmese amber, six of which also have hairy shells. It thus, reinforces the hypothesis that the hairiness is an ancestral state in cyclophorids and that it may have played a role through multiple selective advantages in the terrestri-alization of the group during the Mesozoic.(c) 2022 Elsevier Ltd. All rights reserved.

Harvard Citation style: Bichain, J., Jochum, A., Pouillon, J. and Neubauer, T. (2022) Archaeocyclotus brevivillosus sp. nov., a new cyclophorid land snail (Gastropoda: Cyclophoroidea) from mid-Cretaceous Burmese amber, Cretaceous Research, 140, Article 105359. https://doi.org/10.1016/j.cretres.2022.105359

APA Citation style: Bichain, J., Jochum, A., Pouillon, J., & Neubauer, T. (2022). Archaeocyclotus brevivillosus sp. nov., a new cyclophorid land snail (Gastropoda: Cyclophoroidea) from mid-Cretaceous Burmese amber. Cretaceous Research. 140, Article 105359. https://doi.org/10.1016/j.cretres.2022.105359