Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA Author Tarnac, Anaëlle D9FF2E72-B3F0-4EC7-ADC2-3F04D27E7E1E Centre de Recherches en Paléontologie - Paris, MNHN - SU - CNRS, 8 rue Buffon, 75005 Paris, France. tarnac.anaelle@gmail.com Author Forel, Marie-Béatrice 063C1F7E-6D26-48F9-A8B1-2AFA496B5FB8 Centre de Recherches en Paléontologie - Paris, MNHN - SU - CNRS, 8 rue Buffon, 75005 Paris, France. marie-beatrice.forel@mnhn.fr Author Nestell, Galina 4343960A-89AF-47A7-8418-6B715A7ED791 Department of Earth and Environmental Sciences, University of Texas at Arlington, Arlington, TX 76019, USA. gnestell@uta.edu Author Nestell, Merlynd 544B3992-191B-4427-B1F7-7A19A9CBCB63 Department of Earth and Environmental Sciences, University of Texas at Arlington, Arlington, TX 76019, USA. nestell@uta.edu Author Crasquin, Sylvie 6FDDD550-8522-404D-B3A2-D30BFAA86927 Centre de Recherches en Paléontologie - Paris, MNHN - SU - CNRS, 8 rue Buffon, 75005 Paris, France. sylvie.crasquin@mnhn.fr text European Journal of Taxonomy 2021 2021-09-22 770 1 60 http://dx.doi.org/10.5852/ejt.2021.770.1499 journal article 4088 10.5852/ejt.2021.770.1499 003a15e3-4b3f-423c-b40b-7f08fa1b1a75 2118-9773 5536263 33F92DB8-3122-4F8E-995B-DBF260B3E390 Paraparchites texanus Delo, 1930 Fig. 7C Paraparchites humerosus var. texana Delo, 1930: 153 , pl. 12 fig. 1. Paraparchites texanus – Sohn 1971 : A8, pl. 2 figs 1–2, 7–10, 13–15, with all previous synonyms therein. non Paraparchites texanus – Crasquin-Soleau & Orchard 1994: 59 , 60, pl. 4 fig. 12. — Yi 2004 : pl. 2 fig. 13. Fig. 7 (next page). SEM micrographs of ostracods from the Middle Permian (Roadian, Quarry section, samples GM1 and GM2; Capitanian, MKCS1 section, samples 4 (GM5) and 2 (GM6)) of the Guadalupe Mountains (West Texas , USA ). All specimens are temporarily housed in the collections of the Muséum national d’histoire naturelle, Paris, France (MNHN). A . Libumella cf. athabascensis Green, 1963 , left lateral view of a carapace, sample GM1 (MNHN.F. F63401 ). – B . Fellerites ? sp., external view of a right valve, sample GM1 (MNHN.F. F63402 ). – C . Paraparchites texanus Delo, 1930 , right lateral view of a carapace, sample 4 (GM5) (MNHN.F. F63403 ). – D–H . Paraparchites pecosensis Crasquin sp. nov. D . Holotype , right lateral view of a carapace, sample GM1 (MNHN.F. F63404 ). E . Right lateral view of a carapace, sample GM1 (MNHN.F. F63405 ). F . External view of a right valve, sample 2 (GM6) (MNHN.F. F63406 ). G . External view of a right valve, sample GM1 (MNHN.F. F63407 ). H . Paratype , left lateral view of a carapace, sample GM1 (MNHN.F. F63408 ). – I . Acratia sp. , right lateral view of a carapace, sample GM2 (MNHN.F. F63409 ). – J . Acratia cf. sinuata ( Kozur, 1991 ) , external view of a left valve, sample GM1 (MNHN.F. F63410 ). – K . Acratia sinuata ( Kozur, 1991 ) , external view of a left valve, sample GM1 (MNHN.F. F63411 ). – L–M . Bairdia radlerae Kellett, 1934 . L . External view of a left valve, sample GM1 (MNHN.F. F63412 ). M . Right lateral view of a carapace, sample GM1 (MNHN.F. F63413 ). – N . Bairdia rhomboidalis Hamilton, 1942 , right lateral view of a carapace, sample 2 (GM6) (MNHN.F. F63414 ). – O . Bairdia subfusiformis Hamilton, 1942 , external view of a left valve, sample GM1 (MNHN.F. F63415 ). – P–R . Bairdia elcapitanensis Forel sp. nov. P . Right lateral view of a carapace, sample GM1 (MNHN.F. F63416 ). Q . Right lateral view of a carapace, sample GM1 (MNHN.F. F63417 ). R . Paratype , external view of a right valve, sample GM1 (MNHN.F. F63418 ). Scale bars: 100 µm. Material examined USA • 1 complete carapace ; Guadalupe Mountains , West Texas , ‘ McKittrick Canyon’ Member , Bell Canyon Formation , MKCS1 section, sample 4 (GM5); Capitanian , Middle Permian ; MNHN.F. F63403 • 2 complete carapaces ; same locality as for preceding; Capitanian , Middle Permian ; MNHN.F. F63485 . Occurrence Menar and Tom Green Counties, Texas , USA , Kungurian (Arroyo Formation), Early Permian ( Sohn 1971 and all references therein); sample 4 (GM5), MKCS1 section, ‘McKittrick Canyon’ Member, Bell Canyon Formation, Capitanian; Guadalupe Mountains, West Texas , USA , Guadalupian, Middle Permian (this work).