Permian spiriferellid brachiopods from northern Pangaea: taxonomy, biostratigraphy, macroevolution and implications for palaeoenvironmental and palaeobiogeographical reconstructions ...

• Main Authors: Lee, Sangmin, Shi, G. R., Woo, Jusun, Park, Tae-Yoon S., Oh, Jae-Ryong, Kyung Kim, Na, Nakrem, Hans A., Tazawa, Jun-Ichi
• Format: Dataset
• Language: unknown
• Published: Taylor & Francis 2019
• Subjects: Genetics; FOS Biological sciences; Evolutionary Biology; Environmental Sciences not elsewhere classified; Ecology; Biological Sciences not elsewhere classified; Developmental Biology; Marine Biology; Arctic; Svalbard; Canada; Greenland; Bjørnøya; East Greenland
• Online Access: https://dx.doi.org/10.6084/m9.figshare.7792118.v2; https://tandf.figshare.com/articles/dataset/Permian_spiriferellid_brachiopods_from_northern_Pangaea_taxonomy_biostratigraphy_macroevolution_and_implications_for_palaeoenvironmental_and_palaeobiogeographical_reconstructions/7792118/2

This study reports diverse spiriferellid brachiopods from the Permian rocks of Svalbard and adjacent areas (Arctic Canada and Subpolar Urals of Russia) located at the northern margin of Pangaea. In total, 11 brachiopod species in four genera are recognized and described in detail, including two new species ( Spiriferella protodraschei and Arcullina ? enokiani ). According to our taxonomic investigation, morphological characteristics of the ventral sulcus and dorsal fold are relatively stable within each species, in spite of considerable intraspecific variations in shell outline and macro-ornamentation. In addition, both the arrangement of pustules, as a shell surface micro-ornamentation, and the development of delthyrial coverings are shown to be significant features for inferring phylogenetic relationships and for defining species. The best-known but still questionable taxon, Spiriferella keilhavii , is here identified as an endemic species restricted to Bjørnøya and, possibly, to central East Greenland; it ...