Juvenile snail with preserved soft tissue in mid-Cretaceous amber from Myanmar suggests a cyclophoroidean (Gastropoda) ancestry

Autor: Jeffrey D. Stilwell, Lida Xing, Ryan C. McKellar, Jun Fang, Andrew J. Ross
Rok vydání: 2019
Předmět:
Zdroj: Cretaceous Research. 93:114-119
ISSN: 0195-6671
DOI: 10.1016/j.cretres.2018.09.013
Popis: Gastropods are generally rare in amber. In this paper we describe an example of exceptional soft-bodied preservation in a fossil terrestrial mollusk-a snail shell with some tissue, including part of the cephalic region (head) with a tentacle and inferred eye stalk, and potentially part of the foot and operculum. The snail, a probable juvenile, is preserved in Burmese amber (Burmite) from Myanmar, of earliest Cenomanian age. Morphological evidence suggests a cyclophoroidean ancestry and a possible attribution to the family Cyclophoridae; members of this superfamily are widespread today in Asia, thus indicating a long geological history in the region. This specimen constitutes the first confirmed and oldest record of soft-bodied preservation of a snail in Cretaceous amber.
Databáze: OpenAIRE