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