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Eoanabas

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Eoanabas
Temporal range: Late Oligocene, 26 Ma
Specimen of E. thibetana, on display at the Paleozoological Museum of China.
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Anabantiformes
Family: Anabantidae
Genus: Eoanabas
Wu, Chang, Miao et al., 2016
Species:
E. thibetana
Binomial name
Eoanabas thibetana
Wu, Chang, Miao et al, 2016

Eoanabas ("dawn Anabas") is an extinct genus of climbing gourami that inhabited southern Asia during the Oligocene. It contains a single species, E. thibetana from the Late Oligocene of Tibet. Fossils were found at 4,000 metres (13,000 ft) above sea level, but the species appears to have inhabited a subtropical freshwater environment 1,000 metres (3,300 ft) above sea level dominated by palms and golden rain trees, suggesting that the cold, dry Tibetan Plateau was originally much more warm and humid during the Oligocene, prior to further uplift of the Himalayas and an increased cooling trend.[1]

The presence of Eoanabas during the Late Oligocene confirms that anabantids likely originated in Southeast Asia during the Eocene, and then dispersed to the Indian subcontinent and Africa afterwards.[2]

References

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  1. ^ Wu, Feixiang; Miao, Desui; Chang, Mee-mann; Shi, Gongle; Wang, Ning (13 April 2017). "Fossil climbing perch and associated plant megafossils indicate a warm and wet central Tibet during the late Oligocene". Scientific Reports. 7 (1): 878. Bibcode:2017NatSR...7..878W. doi:10.1038/s41598-017-00928-9. PMC 5429824. PMID 28408764.
  2. ^ Wu, Feixiang; He, Dekui; Fang, Gengyu; Deng, Tao (2019-04-15). "Into Africa via docked India: a fossil climbing perch from the Oligocene of Tibet helps solve the anabantid biogeographical puzzle". Science Bulletin. SPECIAL TOPIC:The Second Tibetan Plateau Scientific Expedition and Research (I). 64 (7): 455–463. doi:10.1016/j.scib.2019.03.029. ISSN 2095-9273.