Data for: Ammonoid biostratigraphy and paleobiogeography of Lower Jurassic sections from Sonora (northwest Mexico) and their tectonic implications

The assessment of paleobiogeographic affinity utilizes a literature-based compilation of ammonoid occurrence data from the North American Cordillera. In order to contribute to debates of controversial large scale terrane movements before or after deposition of fossiliferous Early Jurassic strata, we assembled ammonoid distribution data as a presence-absence matrix at a substage resolution in three time slices (latest Hettangian–Early Sinemurian, Late Sinemurian, Early Pliensbachian) from the Walker Lake terrane in Nevada (Taylor, 1998, 2000; Taylor et al., 2001; Hou, 2014; Porter et al., 2014; Caruthers et al., 2018), the Cadwallader terrane in the Taseko Lakes map area, British Columbia (Smith and Tipper, 2000; Macchioni et al., 2006; Longridge et al., 2006, 2008a, b; Hou, 2014), from the Stikine terrane in northwest British Columbia (Thomson and Smith, 1992; Pálfy and Schmidt, 1994; Johannson et al., 1997), and from Wrangellia terrane in Haida Gwaii (formerly Queen Charlotte Islands), British Columbia (Pálfy, 1991; Pálfy et al., 1994; Smith and Tipper, 1996; Longridge et al., 2008c). Our selection was guided by the aim of including the most complete fossiliferous sections from where recent taxonomic studies are available and obtaining representative coverage for meaningful comparison between the Antimonio terrane, outboard terranes of the Canadian Cordillera and an onboard terrane from Nevada.Dendrograms expressing similarity of Early Jurassic ammonoid faunal assemblages from Sonora with other areas in North American Cordillera: Nevada (Walker Lake terrane), the Intermontane superterrane (including Cadwallader and Stikine terranes in British Columbia) and Wrangellia terrane. Presence-absence matrix given for all the time slices and data also compiled into one summary sheet. The number of species given in the diversity sheet. Assemblages compiled at substage level, cluster analysis performed using UPGMA method and Dice, Simpson, Jaccard, Raup-Crick indices, where these indices also compiled into a separate sheet.

本研究针对古生物地理亲和性的评估，基于文献汇编的北美科迪勒拉山系（North American Cordillera）菊石（ammonoid）产出数据展开。为探讨早侏罗世含化石地层沉积前后颇具争议的大规模地体（terrane）运动议题，我们以亚阶（substage）分辨率，在三个时间切片（晚赫塘期（Hettangian）-早西涅缪尔期（Sinemurian）、晚西涅缪尔期、早普林斯巴赫期（Pliensbachian））中构建了菊石出现-缺失矩阵，数据来源包括：美国内华达州沃克湖地体（Walker Lake terrane，相关文献：Taylor, 1998、2000；Taylor et al., 2001；Hou, 2014；Porter et al., 2014；Caruthers et al., 2018）、不列颠哥伦比亚省塔塞科湖制图区卡德瓦拉德地体（Cadwallader terrane，相关文献：Smith and Tipper, 2000；Macchioni et al., 2006；Longridge et al., 2006、2008a、2008b；Hou, 2014）、不列颠哥伦比亚省西北部斯提金地体（Stikine terrane，相关文献：Thomson and Smith, 1992；Pálfy and Schmidt, 1994；Johannson et al., 1997），以及不列颠哥伦比亚省海达瓜依（原夏洛特皇后群岛，Haida Gwaii (formerly Queen Charlotte Islands)）的兰格利亚地体（Wrangellia terrane，相关文献：Pálfy, 1991；Pálfy et al., 1994；Smith and Tipper, 1996；Longridge et al., 2008c）。本研究的筛选标准为纳入具备最新分类学研究支撑的最完整含化石剖面，并获取具有代表性的采样覆盖度，以实现安蒂莫尼奥地体（Antimonio terrane）、加拿大科迪勒拉山系外侧地体与内华达州内侧地体之间的有效对比。本研究生成了谱系聚类图，用以展示索诺拉地区早侏罗世菊石动物群组合与北美科迪勒拉山系其他区域（内华达沃克湖地体、山间超地体（Intermontane superterrane，含不列颠哥伦比亚省的卡德瓦拉德地体与斯提金地体）以及兰格利亚地体）的相似性。所有时间切片的出现-缺失矩阵均已提供，数据亦汇总至一张总表中；多样性统计表中列明了物种数量。所有动物群组合均以亚阶级别进行整理，聚类分析采用非加权组平均法（UPGMA），并使用迪西系数（Dice）、辛普森系数（Simpson）、雅卡尔系数（Jaccard）、劳普-克里克指数（Raup-Crick）四种相似性指数，相关指数数据亦单独整理为一张附表。