Ostracoda - Palaeocopida - Kirkbyidae
Parent taxon: Kirkbyoidea according to G. Tanaka 2018
See also Benson et al. 1961, Crasquin 2008, Forel 2017, Liebau 2005 and Zazzali et al. 2015
Sister taxa: Amphissellidae, Amphissitidae, Arcyzonidae, Cardiniferellidae, Iranokirkbya, Kellettinidae, Knightinidae, Placideidae, Parvikirkbyiidae
Subtaxa: Aurikirkbya Boreokirkbya Coronakirkbya Ectodemites Kirkbya Kirkbyinae Nodokirkbya Parvikirkbya Reviya Scutikirkbya Semipetasus Shleesha Tubulikirkbya Villozona
Type: Kirkbya
Ecology: epifaunal suspension feeder
Distribution:
• Triassic of China (2 collections), Hungary (1), Iran (1), Pakistan (2), Turkey (22)
• Permian of Australia (34), Austria (1), Canada (7: British Columbia, Nunavut), China (68), Greece (1), Hungary (17), Iran (10), Israel (5), Italy (5), Japan (4), Lithuania (9), Oman (1), the Russian Federation (4), Serbia and Montenegro (1), Svalbard and Jan Mayen (3), Thailand (11), Turkey (2), the United Kingdom (1), United States (17: Kansas, Oklahoma, Texas)
• Carboniferous of Canada (1: Alberta), China (2), Hungary (2), Spain (1), the United Kingdom (1), United States (32: Arkansas, California, Indiana, Iowa, Kansas, Kentucky, Missouri, Oklahoma, Tennessee, Texas, Wyoming)
• Devonian of Belgium (1), Germany (9)
Total: 278 collections including 377 occurrences