Klug Christian, Hüne Liane, Roth Rosemarie, Hautmann Michael
Paläontologisches Institut und Museum, Universität Zürich, Karl-Schmid-Strasse 4, 8006 Zurich, Switzerland.
Berlin, Germany.
Swiss J Palaeontol. 2022;141(1):10. doi: 10.1186/s13358-022-00252-4. Epub 2022 Jun 3.
Soft-tissue preservation in molluscs is generally rare, particularly in bivalves and gastropods. Here, we report a three-dimensionally preserved specimen of the limid from the Cenomanian of France that shows preservation of organic structures of the adductor muscles. Examination under UV-light revealed likely phosphatisation of organic remains, which was corroborated by EDX-analyses. We suggest that the parts of the adductor muscles that are very close to the attachment are particularly resistant to decay and thus may be preserved even under taphonomic conditions usually not favouring soft-tissue fossilisation.
软体动物的软组织保存通常很罕见，尤其是在双壳类和腹足类动物中。在这里，我们报告了一个来自法国塞诺曼阶的三维保存的海扇蛤标本，该标本显示了闭壳肌有机结构的保存。在紫外线下检查发现有机遗骸可能发生了磷酸盐化，能量色散X射线分析（EDX分析）证实了这一点。我们认为，闭壳肌中非常靠近附着点的部分对腐烂具有特别的抵抗力，因此即使在通常不利于软组织化石形成的埋藏条件下也可能被保存下来。
