Zygadenia

Zygadenia is an extinct genus of archostematan beetles from the Jurassic to Cretaceous. It is considered to be a senior synonym of Notocupes by Kirejtshuk (2020),[1] but other researchers suggest to reserve the genus Zygadenia as a form taxon for isolated elytra that probably belong to the genus Notocupes, while retaining Notocupes as a valid genus for complete body fossils.[2][3][4]

Zygadenia
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Scientific classification
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Zygadenia

Synonyms

Kakoselia Handlirsch, 1906

Eleven species are included in the genus, after Strelnikova and Yan (2021, 2023).[2][3] Kirejtshuk (2020) notes that the two Lower Jurassic Australian species Z. westraliensis and Z. martinae possibly merit placement in their own separate genus.[1]

Jurassic species

Toarcian (182.7 Ma to 174.1 Ma)

Cattamarra Coal Measures, Australia
  • Z. martinae Jarzembowski et al. 2015
  • Z. westraliensis Riek 1968

Tithonian (152.1 Ma To 145.0 Ma)

Shar Teeg, Mongolia
  • Z. giebeli Ponomarenko 2014
  • Z. handlirschi Ponomarenko 2014

Cretaceous species

Berriasian (145.0 Ma To 139.8 Ma)

Lulworth Formation, United Kingdom
  • Z. angliae (Giebel 1856)
  • Z. tuberculata (Giebel, 1856)

Hauterivian (132.9 Ma to 129.4 Ma)

Weald Clay, United Kingdom
  • Z. angliae (Giebel 1856)
  • Z. floodpagei Jarzembowski et al. 2015
  • Z. simpsoni Jarzembowski et al. 2015

Barremian (129.4 Ma to 125.0 Ma)

Sinuiju Formation, North Korea
  • Z. liui Jarzembowski et al. 2015
Weald Clay, United Kingdom
  • Z. angliae (Giebel 1856)
  • Z. floodpagei Jarzembowski et al. 2015
  • Z. tuberculata (Giebel 1856)
  • Z. simpsoni Jarzembowski et al. 2015

Aptian (125.0 to ~113.0 Ma)

Argun Formation, Russia
  • Z. sinitzae Ponomarenko, 2000
Sinuiju Formation, North Korea
  • Z. liui Jarzembowski et al. 2015
Yixian Formation, China
  • Z. liui Jarzembowski et al. 2015
Zaza Formation, Buryatia, Russia
  • Z. alexrasnitsyni Strelnikova & Yan, 2021

References

  1. Kirejtshuk, Alexander G. (2020). "Taxonomic Review of Fossil Coleopterous Families (Insecta, Coleoptera). Suborder Archostemata: Superfamilies Coleopseoidea and Cupedoidea". Geosciences. 10 (2): 73. Bibcode:2020Geosc..10...73K. doi:10.3390/geosciences10020073. ISSN 2076-3263.
  2. Strelnikova, O.D.; Yan, E.V. (2021). "Redescriptions of beetles of the Notocupes generic complex (Coleoptera: Archostemata: Ommatidae) from the Lower Cretaceous of Buryatia". Palaeoentomology. 4 (5): 499–514. doi:10.11646/palaeoentomology.4.5.15.
  3. Strelnikova, O.D.; Yan, E.V. (2023). "Redescriptions of the Triassic Notocupes beetles (Archostemata: Ommatidae) from Kyrgyzstan and South Kazakhstan". Palaeoentomology. 6 (2): 174–190. doi:10.11646/palaeoentomology.6.2.9.
  4. Soo Bin Lee; Gi Soo Nam; Yan-Da Li (2022). "A new species of Notocupes (Coleoptera: Archostemata) from the Lower Cretaceous (Albian) Jinju Formation in South Korea". Cretaceous Research. 140: 105357. doi:10.1016/j.cretres.2022.105357.


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