Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata) Author Stöhr, Sabine 412800EB-AACE-4313-9810-61F89B740405 Swedish Museum of Natural History, Department of Zoology, Box 50007, 10405 Stockholm, Sweden. sabine.stohr@nrm.se text European Journal of Taxonomy 2024 2024-05-14 933 1 98 https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335 journal article 10.5852/ejt.2024.933.2525 2118-9773 11198874 8F720F2B-BFBC-4CA1-BFF2-A2B8C7C8D3E1 Aganaster gregarius (Meek & Worthen, 1869) ( Ophiurina incertae sedis ), Early Carboniferous: adGP cleaver-shaped, long, bar-like proximal part with widened distal third, distal abradial edge broadened and flat. abGP absent or perhaps fused to adGP. Articular structures with one or two condyles. RS inner side, abGP and oGP unknown.