Zygadenia

After Kirejtshuk, 2020. Kirejtshuk notes that the two Lower Jurassic Australian species Z. westraliensis and Z. martinae possibly merit placement in their own separate genus.[1]

• †Zygadenia aliena (Tan and Ren 2006) Yixian Formation, China, Aptian
• †Zygadenia angliae (Giebel 1856) Purbeck Group, United Kingdom, Berriasian, Weald Clay, United Kingdom, Barremian
• †Zygadenia brachycephalus (Ponomarenko, 1994) Bakhar Formation, Mongolia, Bajocian, Shar Teeg, Mongolia, Tithonian
• †Zygadenia caducus (Ponomarenko, 1969) Kzyl-Zhar, Kazakhstan, Turonian
• †Zygadenia caudatus (Ponomarenko, 1966) Zaza Formation, Russia, Aptian
• †Zygadenia cellulosus (Ponomarenko, 1969) Dzhil Formation, Kyrgyzstan, Hettangian-Sinemurian
• †Zygadenia crassus (Ponomarenko, 1969) Sulyukta Formation, Kyrgyzstan, Toarcian
• †Zygadenia diazromerali Soriano & Delclòs, 2006 Las Hoyas, Spain, Barremian
• †Zygadenia dischides (Zhang 1986) Jiulongshan Formation, China, Callovian
• †Zygadenia dundulaensis (Ponomarenko, 1994) Dzun-Bain Formation, Mongolia, Aptian
• †Zygadenia elegans (Ponomarenko, 1994) Dzun-Bain Formation, Mongolia, Aptian
• †Zygadenia epicharis (Tan et al. 2005) Yixian Formation, China, Aptian
• †Zygadenia eumeura (Tan et al. 2006) Yixian Formation, China, Aptian
• †Zygadenia excellens (Ponomarenko, 1966) Zaza Formation, Russia, Aptian
• †Zygadenia exiguus (Ponomarenko, 1994) Bakhar Formation, Mongolia, Bajocian, Shar Teeg, Mongolia, Tithonian
• †Zygadenia floodpagei Jarzembowski et al. 2015 Weald Clay, United Kingdom, Hauterivian-Barremian
• †Zygadenia foersteri (Ponomarenko, 1971) Karabastau Formation, Kazakhstan, Oxfordian
• †Zygadenia giebeli Ponomarenko 2014 Shar Teeg, Mongolia, Tithonian
• †Zygadenia handlirschi Ponomarenko 2014 Shar Teeg, Mongolia, Tithonian
• †Zygadenia homorus (Lin, 1986) Guanyintan Formation, China, Hettangian
• †Zygadenia issykkulensis (Ponomarenko, 1969) Dzhil Formation, Kyrgyzstan, Hettangian-Sinemurian
• †Zygadenia jurassica Hong 1983 Jiulongshan Formation, China, Callovian
• †Zygadenia kezuoensis Hong 1987 Shahai Formation, China, Aptian
• †Zygadenia khasurtyiensis (Strelnikova 2019) Khasurty, Russia, Aptian
• †Zygadenia khetanensis (Ponomarenko in Cromov et al., 1993) Emanra Formation, Russia, Turonian
• †Zygadenia kirghizicus (Ponomarenko, 1969) Dzhil Formation, Kyrgyzstan, Hettangian-Sinemurian
• †Zygadenia laetus (Lin, 1976) Jianshangou Formation, China, Barremian
• †Zygadenia laiyangensis (Hong, 1990) Laiyang Formation, China, Aptian
• †Zygadenia lapidarius (Ponomarenko, 1968) Karabastau Formation, Kazakhstan, Oxfordian
• †Zygadenia laticella (Ponomarenko, 1969) Madygen Formation, Kyrgyzstan, Carnian
• †Zygadenia latus (Ponomarenko, 1969) Dzhil Formation, Kyrgyzstan, Hettangian-Sinemurian
• †Zygadenia lentus (Ren, 1995) Dabeigou Formation, China, Hauterivian
• †Zygadenia lini (Ponomarenko et al. 2012) Guanyintan Formation, China Toarcian/Aalenian
• †Zygadenia liui Jarzembowski et al. 2015 Yixian Formation, China, Aptian
• †Zygadenia longicollis (Ponomarenko, 1994) Bakhar Formation, Mongolia, Bajocian
• †Zygadenia longicoxa Soriano & Delclòs, 2006 Las Hoyas, Spain, Barremian
• †Zygadenia ludongensis (Wang and Liu 1996) Laiyang Formation, China, Aptian
• †Zygadenia martinae Jarzembowski et al. 2015 Cattamarra Coal Measures, Australia, Toarcian
• †Zygadenia martinclosas Soriano & Delclòs, 2006 La Pedrera de Rúbies Formation, Las Hoyas, Spain, Barremian
• †Zygadenia miniscula Tan et al. 2006, Yixian Formation, China, Aptian
• †Zygadenia mongolicus (Ponomarenko, 1994) Ulan-Argalant Formation, Mongolia, Barremian
• †Zygadenia nigromonticola (Ponomarenko, 1968) Karabastau Formation, Kazakhstan, Oxfordian
• †Zygadenia oculata Soriano & Delclòs, 2006 La Pedrera de Rúbies Formation, Spain, Barremian
• †Zygadenia oxypygus (Ponomarenko, 1969) Koldzat Formation, Kazakhstan, Carnian
• †Zygadenia patulus Ponomarenko, 1985 Tyumen Formation, Russian, Callovian
• †Zygadenia picturatus (Ponomarenko, 1964) Karabastau Formation
• †Zygadenia pingi (Ponomarenko and Ren 2010) Daohugou, China, Callovian
• †Zygadenia porrecta Tan et al. 2006 Yixian Formation, China, Aptian
• †Zygadenia protensa Tan et al. 2006 Yixian Formation, China, Aptian
• †Zygadenia psilata Tan et al. 2005 Yixian Formation, China, Aptian
• †Zygadenia pulcher (Ponomarenko, 1968) Karabastau Formation, Kazakhstan, Oxfordian
• †Zygadenia reticulatus (Oppenheim, 1888) Solnhofen, Germany, Tithonian
• †Zygadenia rostratus (Ponomarenko, 1969) Madygen Formation, Kyrgyzstan, Carnian
• †Zygadenia rudis Tan et al. 2005 Yixian Formation, China, Aptian
• †Zygadenia semen (Ponomarenko, 2000) Argun Formation, Russia, Aptian
• †Zygadenia shiluoensis Hong 1984 Tongchuan Formation, China, Ladinian
• †Zygadenia sibirica Ponomarenko, 2000 Argun Formation, Russia, Aptian
• †Zygadenia simpsoni Jarzembowski et al. 2015 Weald Clay, United Kingdom, Hauterivian-Barremian
• †Zygadenia siniestri Soriano & Delclòs, 2006 Las Hoyas, Spain, Barremian
• †Zygadenia sinitzae Ponomarenko, 2000 Argun Formation, Russia, Aptian
• †Zygadenia sogutensis (Ponomarenko, 1969) Dzhil Formation, Kyrgyzstan, Hettangian-Sinemurian
• †Zygadenia stabilis Tan et al. 2005 Yixian Formation, China, Aptian
• †Zygadenia tenuis (Ponomarenko, 1969) Madygen Formation, Kyrgyzstan, Carnian
• †Zygadenia tripartitus (Oppenheim, 1888) Solnhofen, Germany, Tithonian
• †Zygadenia tuanwangensis (Hong, 1990) Laiyang Formation, China, Aptian
• †Zygadenia tuberculatus (Giebel, 1856) Purbeck Group, United Kingdom, Berriasian
• †Zygadenia valida Lin 1976 Jehol Group, China, Aptian
• †Zygadenia viridis Soriano & Delclòs, 2006 Las Hoyas, Spain, Barremian
• †Zygadenia vitimensis (Ponomarenko, 1966) Zaza Formation, Russia, Aptian
• †Zygadenia westraliensis Riek 1968 Cattamarra Coal Measures, Australia, Toarcian