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A new mound-building biota from the lower Carboniferous of Alabama
Journal of Paleontology ( IF 1.4 ) Pub Date : 2020-01-20 , DOI: 10.1017/jpa.2019.103
David C. Kopaska-Merkel , Douglas W. Haywick , Richard G. Keyes

A small (1.2 m) columnar carbonate mound in shaley strata equivalent to the Hartselle Sandstone (lower Serpukhovian) near Woodville, northeastern Alabama, was built by a consortium of species unlike those of other Carboniferous mounds in the southeastern United States. The mound contains a new problematic microencruster,Aphralysia anfractanew species, along with encrusting bryozoans (FistuliporaM'Coy, 1849), nonskeletal microbes, and other microencrusters, includingAphralysia caprioraeMamet and Roux, 1975, in a carbonate mud matrix. Mound cavities are filled with three generations of carbonate and siliciclastic sediment. Other biotic constituents of the mound include oncoids, sponges (includingPileospongiaRigby, Keyes, and Horowitz, 1979), gastropods, crinoids, a tabulate coral, and coenobionts, including coccoid calcimicrobes. The mound biota, especially the microencrusters, is dramatically different from those of other Serpukhovian mounds that have been described from Alabama (made by various consortia of rugose corals, fenestrate bryozoans, crinoids, sponges, and nonskeletal microbes). Indeed, the Woodville mound extends the range of the lower Carboniferous encrusterAphralysiaGarwood, 1914 to North America.UUID:http://zoobank.org/d3988875-a7fb-4382-bd14-b17c083d87ad

中文翻译:

来自阿拉巴马州下石炭统的一个新的筑丘生物群

位于阿拉巴马州东北部伍德维尔附近的页岩地层中的一个小(1.2 m)柱状碳酸盐丘相当于哈特塞尔砂岩(下塞尔普霍夫阶),是由与美国东南部其他石炭纪丘不同的物种联合建造的。土丘包含一个新的有问题的微结壳,春风草新物种,以及结壳的苔藓虫(裂孔虫麦考伊,1849 年)、非骨骼微生物和其他微结壳,包括山羊草Mamet 和 Roux,1975 年,在碳酸盐泥基质中。丘穴内充满了三代碳酸盐和硅质碎屑沉积物。土丘的其他生物成分包括瘤细胞、海绵(包括毛海绵体Rigby、Keyes 和 Horowitz,1979 年)、腹足动物、海百合、板状珊瑚和共生生物,包括球状钙微生物。土丘生物群,尤其是微结壳,与阿拉巴马州描述的其他 Serpukhovian 土丘(由各种褶皱珊瑚、有窗苔藓虫、海百合、海绵和非骨骼微生物组成)的生物群有很大不同。事实上,伍德维尔丘扩大了下石炭统结壳的范围失语症Garwood,1914 年到北美。UUID:http://zoobank.org/d3988875-a7fb-4382-bd14-b17c083d87ad
更新日期:2020-01-20
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