Globally significant Early Permian crinoids from the Mount Mark Formation in Strathcona Provincial Park, Vancouver Island, British Columbia — preliminary analysis of a disappearing fauna
Globally significant Early Permian crinoids from the Mount Mark Formation in Strathcona Provincial Park, Vancouver Island, British Columbia — preliminary analysis of a disappearing fauna
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DOI：
10.1139/e09-039
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发表时间：
2009-09
影响因子：
1.4
通讯作者：
Jisuo Jin;G. D. Webster;J. Haggart;Carrie Saxifrage;Barry Saxifrage;Christian Gronau;A. Douglas
中科院分区：
文献类型：
--
作者：
Jisuo Jin;G. D. Webster;J. Haggart;Carrie Saxifrage;Barry Saxifrage;Christian Gronau;A. Douglas
巴特尔湖群 (Buttle Lake Group) 的马克山地层 (Mount Mark Formation) 地层暴露在温哥华岛中部斯特拉斯科纳省立公园 (Strathcona Province Park) 的大理石峰 (Marble Peak) 附近，含有多种早二叠世海百合动物群。这是第一个在兰吉利亚地体中发现的含有冠和杯的二叠纪动物群。该动物群包含古生代海百合主要亚纲的代表：Camerata、Disparida 和 Cladida。 2004 年至 2008 年间对标本进行了观察和拍照。没有按照斯特拉科纳省立公园的规定采集标本。初步鉴定发现该动物群中有几个新属和新种，但由于缺乏储存标本，它们没有被命名或描述。据判断，该动物群中至少有 24 个物种，使其成为北美已知的第二丰富的二叠纪动物群。已识别的属表明与北美动物群的关系比与古特提斯动物群的关系更大，这表明兰格利亚比与古奥特提斯动物群更接近北美......
Strata of the Mount Mark Formation, Buttle Lake Group, exposed in the vicinity of Marble Peak in Strathcona Provincial Park, central Vancouver Island, contain a diverse Early Permian crinoid fauna. This is the first Permian fauna containing crowns and cups recognized from Wrangellia terrane. The fauna contains representatives of each of the major Paleozoic crinoid subclasses: Camerata, Disparida, and Cladida. Specimens were observed and photographed between 2004 and 2008. No specimens were collected in adherence to regulations of Stratcona Provincial Park. Preliminary identifications recognize several new genera and species within the fauna, but they are not named or described lacking specimens for repository. A minimum of 24 species are judged to be in the fauna, making it the second most diverse Permian fauna known from North America. Identified genera suggest a greater relationship to North American faunas than to Paleotethyan faunas, suggesting Wrangellia was closer to North America than to the Paleot...