中文题名 / Chinese title: 古生代后海百合对底栖捕食的辐射响应早于中生代海洋革命
英文题名 / English title: Post-Paleozoic crinoid radiation in response to benthic predation preceded the Mesozoic marine revolution.
作者 / Authors: Baumiller TK, Salamon MA, Gorzelak P, Mooi R, Messing CG, Gahn FJ.
期刊 / Journal: PNAS
年份 / Year: 2010
DOI: 10.1073/pnas.0914199107
论文链接 / Article: https://doi.org/10.1073/pnas.0914199107
摘要来源 / Abstract source: https://europepmc.org/article/MED/20231453

英文摘要原文 / Original English abstract
It has been argued that increases in predation over geological time should result in increases in defensive adaptations in prey taxa. Recent in situ and laboratory observations indicate that cidaroid sea urchins feed on live stalked crinoids, leaving distinct bite marks on their skeletal elements. Similar bite marks on fossil crinoids from Poland strongly suggest that these animals have been subject to echinoid predation since the Triassic. Following their near-demise during the end-Permian extinction, crinoids underwent a major evolutionary radiation during the Middle-Late Triassic that produced distinct morphological and behavioral novelties, particularly motile taxa that contrasted strongly with the predominantly sessile Paleozoic crinoid faunas. We suggest that the appearance and subsequent evolutionary success of motile crinoids were related to benthic predation by post-Paleozoic echinoids with their stronger and more active feeding apparatus and that, in the case of crinoids, the predation-driven Mesozoic marine revolution started earlier than in other groups, perhaps soon after the end-Permian extinction.

摘要依据的主要发现 / Findings based on the abstract
现生及化石有柄海百合的咬痕指示自三叠纪起存在海胆捕食；可移动海百合类型的兴起与灭绝后的辐射相对应。
Bite marks on living and fossil stalked crinoids implicate sea-urchin predation since the Triassic. The rise of motile crinoid forms coincides with their post-extinction radiation.

摘要依据的结论 / Conclusions based on the abstract
底栖捕食可能较早促进海百合移动能力及多样化，早于其他类群通常认为的中生代海洋革命。
Benthic predation may have promoted crinoid mobility and diversification earlier than the main Mesozoic marine revolution recognized in other groups.

可用全文文件 / Available full-text files