关键词: Crinoids Poland Triassic Troglomorphism

Mesh : Animals Caves Echinodermata / anatomy & histology classification Ecosystem Fossils Invertebrates / anatomy & histology classification Poland

来  源:   DOI:10.1007/s00114-015-1310-7   PDF(Sci-hub)

Abstract:
In this paper, we document the Middle Triassic marine fauna recovered from the fissure/cave system of Stare Gliny (southern Poland) developed in the Devonian host dolomite. The fossils are mostly represented by in situ preserved and small-sized holdfasts of crinoids (Crinoidea) that are attached to the cave walls. Other fossils found in the cave infills include articulated brittle stars and brachiopods. Our findings constitute the oldest Mesozoic evidence for troglophile crinoids. We suggest that troglomorphism in these echinoderms was likely related to protection against predation, which underscores the magnitude of anti-predatory adaptations to increased predation pressure that occurred during the Early Mesozoic Marine Revolution.
摘要:
在本文中,我们记录了从泥盆纪寄主白云岩中开发的StareGliny(波兰南部)的裂缝/洞穴系统中回收的中三叠纪海洋动物。化石主要由附着在洞穴壁上的海百合(Crinoidea)的原位保存和小型保存物代表。在洞穴填充物中发现的其他化石包括铰接的脆性恒星和腕足动物。我们的发现构成了中生代最古老的蛇类动物的证据。我们认为这些棘皮动物的横形性可能与防止捕食有关,强调了中生代早期海洋革命期间发生的反掠夺性适应增加的捕食压力的程度。
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