Fischer Valentin, Weis Robert, Delsate Dominique François, Della Giustina Francesco, Wintgens Pierre, Fuchs Dirk, Thuy Ben
Evolution & Diversity Dynamics Lab, Université de Liège, Liège, Belgium.
Section Paléontologie, Musée National d'histoire Naturelle, Luxembourg, Luxembourg.
PeerJ. 2025 Sep 8;13:e19786. doi: 10.7717/peerj.19786. eCollection 2025.
Many Early Jurassic marine predators were seemingly adapted to hunt soft and fast prey items such as cephalopods. However, deciphering what these animals ate and, therefore, the intensity of their competition is challenging, as fossilised gut content is biased by multiple factors. In this paper, we report a loligosepiid vampyromorph coleoid in the gut of a specimen of the ichthyosaurian from the early Toarcian Bascharage Lagerstätte of Southern Luxembourg. This is the first report of octobrachian predation in ichthyosaurians. The coeval pachycormid teleosts and have recently been reported to feed on loligosepiid octobrachians as well. We use this opportunity to compare the functional anatomy of these taxa and re-evaluate the affinities of coleoids preserved as ichthyosaurian gut content.
许多早侏罗世海洋捕食者似乎适应了捕食诸如头足类动物等柔软且行动迅速的猎物。然而，要弄清楚这些动物吃什么，进而了解它们竞争的激烈程度颇具挑战，因为化石中的肠道内容物受到多种因素的影响而存在偏差。在本文中，我们报告了在来自卢森堡南部早托尔阶巴沙拉格化石库的一具鱼龙标本的肠道中发现的一种枪乌贼科的幽灵蛸类头足动物。这是关于鱼龙类中八腕目捕食行为的首次报道。同时，最近有报道称，与之同时期的厚茎鱼目硬骨鱼也以枪乌贼科八腕目动物为食。我们借此机会比较了这些类群的功能解剖结构，并重新评估了作为鱼龙肠道内容物保存下来的头足类动物的亲缘关系。
