Data from: Batocrinidae (Crinoidea) from the lower Mississippian (lower Viséan) Fort Payne Formation of Kentucky, Tennessee, and Alabama: systematics, geographic occurrences, and facies distribution

The Batocrinidae are characteristic faunal elements in lower Mississippian shallow-marine settings in North America. Recent delineation of objectively defined genera allows a reexamination of batocrinid species and their distribution in the Fort Payne Formation (early Viséan, late Osagean), a well-studied array of carbonate and siliciclastic facies. The Fort Payne batocrinid fauna has fourteen species assigned to six genera, plus hybrid specimens. Magnuscrinus spinosus (Miller and Gurley, 1895a) is reassigned to its original placement in Eretmocrinus. Hybrid specimens (Ausich and Meyer, 1994) are regarded as Eretmocrinus magnificus X Eretmocrinus spinosus. Macrocrinus casualis is the dominant species of Macrocrinus in the Fort Payne, and M. mundulus and M. strotobasilaris are recognized in the Fort Payne Formation for the first time. Magnuscrinus cumberlandensis n. sp. is named, thirteen species are designated as junior synonyms, the name for the hybrid specimens is changed to Eretmocrinus magnificus × Eretmocrinus spinosus, and the previous occurrences of two species in the Fort Payne are rejected. The Eastern Interior Seaway was a mixed carbonate-siliciclastic setting with both shallow- and deep-water epicontinental sea facies ranging from relatively shallow autochthonous green shales to deep-water turbidite facies. Dizygocrinus was restricted to shallow-water carbonate and siliciclastic facies, Eutrochocrinus was restricted to shallow-water carbonate facies, and Magnuscrinus was restricted to deep-water facies. Species distributions varied from Abatocrinus steropes, Alloprosallocrinus conicus, Macrocrinus mundulus, and Uperocrinus nashvillae that occurred throughout the Eastern Interior Seaway to species that were restricted to a single facies. Eretmocrinus magnificus, Alloprosallocrinus conicus, and Uperocrinus robustus were the dominant batocrinids in the Fort Payne Formation.

巴托海百合科（Batocrinidae）是北美密西西比纪早期浅海沉积环境中的特征性动物群组分。近期通过客观定义属级分类单元的厘定工作，得以重新审视巴托海百合类物种及其在福特佩恩组（维宪阶早期，奥塞吉阶晚期）的分布情况；该地层是一套研究程度较高的碳酸盐岩与硅质碎屑岩相组合。福特佩恩组的巴托海百合动物群包含14个隶属于6个属的物种，另有杂交标本。多刺巨海百合（Magnuscrinus spinosus，Miller & Gurley，1895a）被重新归回其最初建立时的属——隐海百合属（Eretmocrinus）。由Ausich与Meyer于1994年记述的杂交标本，被认定为华丽隐海百合（Eretmocrinus magnificus）与多刺隐海百合（Eretmocrinus spinosus）的杂交类群。偶然大海百合（Macrocrinus casualis）是福特佩恩组内大海百合属（Macrocrinus）的优势物种，而平凡大海百合（Macrocrinus mundulus）与基锥大海百合（Macrocrinus strotobasilaris）为该组首次记录的物种。本研究建立坎伯兰巨海百合（Magnuscrinus cumberlandensis）新种，将13个物种指定为次异名，将杂交标本的学名修订为华丽隐海百合 × 多刺隐海百合（Eretmocrinus magnificus × Eretmocrinus spinosus），并否决了此前2个物种在福特佩恩组的产出记录。东部内陆海道为一套混合碳酸盐岩与硅质碎屑岩的沉积环境，涵盖浅海与深水陆表海相沉积，从相对浅水环境的原地绿色页岩延伸至深水浊积岩相。双叶海百合属（Dizygocrinus）仅分布于浅水碳酸盐岩与硅质碎屑岩相，真旋海百合属（Eutrochocrinus）仅见于浅水碳酸盐岩相，而巨海百合属（Magnuscrinus）则局限于深水沉积相。巴托海百合类物种的分布范围差异显著：部分物种如星射矮海百合（Abatocrinus steropes）、锥状异前海百合（Alloprosallocrinus conicus）、平凡大海百合（Macrocrinus mundulus）及纳什维尔上海百合（Uperocrinus nashvillae）遍布整个东部内陆海道，而另有部分物种仅局限于单一沉积相。华丽隐海百合（Eretmocrinus magnificus）、锥状异前海百合（Alloprosallocrinus conicus）及强壮上海百合（Uperocrinus robustus）为福特佩恩组内的优势巴托海百合类群。