Amakusaichthys Temporal range:
Santonian
| |
---|---|
![]() | |
Reconstruction | |
Scientific classification
![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | † Ichthyodectiformes |
Family: | † Bardackichthyidae |
Genus: | †
Amakusaichthys Yabumoto et al. 2018 |
Species: | †A. goshouraensis
|
Binomial name | |
†Amakusaichthys goshouraensis Yabumoto et al. 2018
|
Amakusaichthys is an extinct genus of ichthyodectiform fish which lived during the Late Cretaceous, known from only one species A. goshouraensis. Fossils are known from Kumamoto Prefecture in Japan. [1]
Fossils were discovered in 2012 from construction site in Goshoura, Amakusa. [2] This site is later considered to belong to Hinoshima Formation of the Himenoura Group. [1] 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. [1] [2]
Amakusaichthys is relatively small ichthyodectiform fish with length around 60 cm (24 in). It is characterized by its long snout and small mouth and teeth. [1] Multiple specimens are found overlapped in one place, suggesting its schooling ecology. [2] [3]
Amakusaichthys was not assigned to any family in original description. However, characters suggested that it was related to Heckelichthys. [1] In 2021, it was assigned to Bardackichthyidae, alongside Heckelichthys and Bardackichthys. [4]
Amakusaichthys Temporal range:
Santonian
| |
---|---|
![]() | |
Reconstruction | |
Scientific classification
![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | † Ichthyodectiformes |
Family: | † Bardackichthyidae |
Genus: | †
Amakusaichthys Yabumoto et al. 2018 |
Species: | †A. goshouraensis
|
Binomial name | |
†Amakusaichthys goshouraensis Yabumoto et al. 2018
|
Amakusaichthys is an extinct genus of ichthyodectiform fish which lived during the Late Cretaceous, known from only one species A. goshouraensis. Fossils are known from Kumamoto Prefecture in Japan. [1]
Fossils were discovered in 2012 from construction site in Goshoura, Amakusa. [2] This site is later considered to belong to Hinoshima Formation of the Himenoura Group. [1] 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. [1] [2]
Amakusaichthys is relatively small ichthyodectiform fish with length around 60 cm (24 in). It is characterized by its long snout and small mouth and teeth. [1] Multiple specimens are found overlapped in one place, suggesting its schooling ecology. [2] [3]
Amakusaichthys was not assigned to any family in original description. However, characters suggested that it was related to Heckelichthys. [1] In 2021, it was assigned to Bardackichthyidae, alongside Heckelichthys and Bardackichthys. [4]