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Amakusaichthys
''Amakusaichthys'' is an extinct genus of Ichthyodectiformes, ichthyodectiform fish which lived during the Late Cretaceous, known from only one species ''A. goshouraensis''. Fossils are known from Kumamoto Prefecture in Japan. Discovery Fossils were discovered in 2012 from construction site in Goshoura, Kumamoto, Goshoura, Amakusa, Kumamoto, Amakusa. This site is later considered to belong to Hinoshima Formation of the Himenoura Group. It was the first discovery of marine ichthyodectform fish described from Asia in detail, while other ichthyodectiform fish from Asia (three genera belong to Chuhsiungichthyidae) are from non-marine environment. Description ''Amakusaichthys'' is relatively small ichthyodectiform fish with length around . It is characterized by its long snout and small mouth and teeth. Multiple specimens are found overlapped in one place, suggesting its Shoaling and schooling, schooling ecology. Classification ''Amakusaichthys'' was not assigned to any family ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chuhsiungichthyidae
Ichthyodectiformes is an extinct order of marine stem-teleost ray-finned fish. The order is named after the genus ''Ichthyodectes'', established by Edward Drinker Cope in 1870. Ichthyodectiforms are usually considered to be some of the closest relatives of the teleost crown group. They were most diverse throughout the Cretaceous period, though basal forms like ''Thrissops, Occithrissops'' and ''Allothrissops'' are known from the Middle-Late Jurassic of Europe and North America. Most ichthyodectiforms ranged between 1 and 5 meters (3–15 ft) in length. Most of known taxa were predators, feeding on smaller fish; in several cases, larger ichthyodectiforms preyed on smaller members of the order. Some species had remarkably large teeth, though others, such as ''Gillicus arcuatus'', had small ones and sucked in their prey. '' Heckelichthys preopercularis'' is a rare example of non-predatory ichthyodectiform, more likely to be microphagous, fed on small particles. There is evidence ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |