Omma

Omma
Temporal range: Rhaetian–Recent
Omma stanleyi
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Suborder: Archostemata
Family: Ommatidae
Genus: Omma
Newman, 1839

Omma is a genus of beetles in the family Ommatidae. Omma is an example of a living fossil. The oldest species known, O. liassicum, lived during the final stage of the Triassic (Rhaetian), followed by several other species from Europe and Asia until after O. attenuatum from the Lower Cretaceous (lower Aptian), the genus then reappears in the Burmese amber during the Cenomanian, then disappears from the fossil record for the remaining 100 million years until today, with four species endemic in Australia.

Species, temporal and spatial distribution

The following extinct and extant species have been described.[1][2]

  • Omma aberratum Ponomarenko, 1968, Late Jurassic (Oxfordian and Kimmeridgian) Karabastau Formation, Karatau, Kazakhstan
  • Omma altajense Ponomarenko, 1997, Middle to Later Jurassic, Togo-Khuduk sequence, Bakhar, Mongolia
  • Omma antennatum Ponomarenko, 1997, Lower Cretaceous, Khurilt sequence, Bon-Tsagan, Mongolia
  • Omma avus Ponomarenko, 1969, Lower Jurassic (Hettangian), Dgil’skaya Formation, Issyk-Kul’, Kyrgyzstan
  • Omma brevipes Deichmueller, 1886, Upper Jurassic (Tithonian), Solnhofener Formation, Solnhofen, Germany
  • Omma delicata Tan, Wang, Ren & Yang, 2012, Middle Jurassic (Bathonian-Callovian boundary), Jiulongshan Formation, Daohugou Village, Shantou Township, Ningcheng County, Inner Mongolia, China
  • Omma gobiense Ponomarenko, 1997, Lower Cretaceous (Campanian), Ulan-Ereg Formation, Khoutiin-Khotgor, Mongolia
  • Omma jurassicum Ponomarenko, 1968, Late Jurassic (Oxfordian and Kimmeridgian) Karabastau Formation, Karatau, Kazakhstan
  • Omma liassicum Crowson, 1962, Late Triassic (Rhaetian), Brown’s wood, Warwickshire, England
  • Omma mastersi MacLeay, 1871, recent, Australia
  • Omma pilosum (Ponomarenko, 1964) = Ommamima pilosum, Late Jurassic (Oxfordian and Kimmeridgian) Karabastau Formation, Karatau, Kazakhstan
  • Omma rutherfordi Lawrence, 1999, recent, Australia
  • Omma sagitta Neboiss, 1989, recent, Australia
  • Omma sibiricum Ponomarenko, 1966, Lower Cretaceous (Valanginian), Zazinskaya Formation, Baissa, West Transbaikalia Russia
  • Omma stanleyi Newman, 1839 (type), recent, Australia
  • Omma zitteli (Oppenheim, 1888) = Procarabus zitteli, Upper Jurassic (Tithonian), Solnhofener Formation, Solnhofen, Germany

References

  1. ↑ Ommatidae Species List Archived 2012-10-23 at the Wayback Machine. at Joel Hallan’s Biology Catalog. Texas A&M University. Retrieved on 11 May 2012.
  2. ↑ Tan, Jingjing; Wang, Yongjie; Ren, Dong; Yang, Xingke (2012). "New fossil species of ommatids (Coleoptera: Archostemata) from the Middle Mesozoic of China illuminating the phylogeny of Ommatidae". BMC Evolutionary Biology. 12: 113. doi:10.1186/1471-2148-12-113. PMC 3518168. PMID 22776212.


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