''Siamamia'' is an

extinct Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and ...

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

ray-finned fish Actinopterygii (; ), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that comprise over 50% of living vertebrate species. They are so called because of their lightly built fins made of webbings of sk ...

in the family

Amiidae The Amiidae are a family of basal ray-finned fishes. The bowfin and the eyespot bowfin ('' Amia ocellicauda'') are the only two species to survive today, although additional species in all four subfamilies of Amiidae are known from Jurassic, Cre ...

.Deesri, U.; Naksri, W.; Jintasakul, P.; Noda, Y.; Yukawa, H.; Hossny, T.E.; Cavin, L. A New Sinamiin Fish (Actinopterygii) from the Early Cretaceous of Thailand: Implications on the Evolutionary History of the Amiid Lineage. Diversity 2023, 15, 491. https://doi.org/10.3390/d15040491 They are halecomorph fishes endemic to Early

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 mya (unit), million years ago (Mya). It is the third and final period of the Mesozoic Era (geology), Era, as well as the longest. At around 77.1 million years, it is the ...

freshwater environments from north-eastern Thailand. ''Siamamia'' fossils have been found in Sao Khua Formation, present-day in Phu Phok, Sakhon Nakhon Province, Thailand.Cavin, Lionel, et al. “The First Sinamiid Fish (Holostei, Halecomorpha) from Southeast Asia (Early Cretaceous of Thailand).” Journal of Vertebrate Paleontology, vol. 27, no. 4, 2007, pp. 827–37. JSTOR, http://www.jstor.org/stable/30117452. Accessed 28 Mar. 2023.

Etymology

*''

Siam Thailand, officially the Kingdom of Thailand and historically known as Siam (the official name until 1939), is a country in Southeast Asia on the Mainland Southeast Asia, Indochinese Peninsula. With a population of almost 66 million, it spa ...

'' (former name of Thailand), referring to location. *'' Amia'' (

Greek Greek may refer to: Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group *Greek language, a branch of the Indo-European language family **Proto-Greek language, the assumed last common ancestor of all kno ...

). *'' Naga'' mythological creature in

Mekong River The Mekong or Mekong River ( , ) is a transboundary river in East Asia and Southeast Asia. It is the world's List of rivers by length, twelfth-longest river and List of longest rivers of Asia, the third-longest in Asia with an estimated l ...

References

† A dagger, obelisk, or obelus is a typographical mark that usually indicates a footnote if an asterisk has already been used. The symbol is also used to indicate death (of people) or extinction (of species or languages). It is one of the mo ...

Prehistoric ray-finned fish genera Cretaceous bony fish Early Cretaceous fish of Asia Taxa named by Varavudh Suteethorn Taxa named by Éric Buffetaut {{Amiiformes-stub