期刊
CRETACEOUS RESEARCH
卷 30, 期 5, 页码 1307-1312出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cretres.2009.07.008
关键词
Solemys; Early Maastrichtian; Pyrenees; Taphonomy; Semi-aquatic
资金
- Generalitat de Catalunya [2006EXCAVA0001]
- Ministerio de Ciencia a Innovacion [CGL2008-06533-C03-01/BTE]
- Ministerio de Ciencia a lnnovacion [JCI-2007-187-1593]
We report on a turtle from the Mina Esquirol site (Vallcebre basin), a new locality of early Maastrichtian age in the south-eastern Pyrenees. Fossils were located in the basal Tremp Formation, which was deposited in a littoral marsh. The material consists of a cast of a carapace including peripheral fragments and partial neural plates. The carapace exhibits a vermiculate ornamentation that is characteristic of genus Solemys and a histological bone structure similar to that of terrestrial taxa. However, taphonomic data indicates little transport and a short biostratinomic history, whereas palaeontological and sedimentological context indicates that the specimen was preserved in a shallow brackish water environment. Based on this taphonomic and sedimentological evidence, we suggest that at least some species of genus Solemys had a lifestyle similar to extant fresh or brackish water turtles (terrapins) and that the histological evidence alone for a terrestrial lifestyle is misleading. (C) 2009 Elsevier Ltd. All rights reserved.
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