| Chuhsiungichthys | |
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| Scientific classification | |
| Kingdom: | |
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| Family: | Yabumoto, 1994 [1] |
| Genus: | Chuhsiungichthys Lew 1974 |
| Type species | |
| Chuhsiungichthys tsanglingensis Lew 1974 | |
| Species | |
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Chuhsiungichthys is an extinct genus of ichthyodectiform ray-finned fish that lived in freshwater environments in what is now Yunnan, China, [2] and Kyushu, Japan, [1] during the Cretaceous. It differs from its sister genus, Mesoclupea , primarily by having a comparatively more anteriorly-placed dorsal fin.
The type species, C. tsanglingensis, is found in Upper Cretaceous-aged strata of Chuhsiung, Yunnan Province. C. yanagidai is found in the first formation of the Lower Cretaceous-aged Wakino Subgroup, in Kyushu. C. japonicus is found in the fourth formation of the Wakino Subgroup.
Wakinosaurus is a genus of theropod dinosaur from the Early Cretaceous (Hauterivian-Barremian) Sengoku Formation of Kyushu, Japan. The genus is a tooth taxon, based solely on a single tooth.
Leptolepis is an extinct genus of teleost fish that lived in freshwater and marine environments from the Middle Triassic period until the Early Cretaceous. The genus is one of the earliest recognized teleost genera.
Axelrodichthys is an extinct genus of mawsoniid coelacanth from the Cretaceous of Africa, North and South America, and Europe. Several species are known, the remains of which were discovered in the Lower Cretaceous (Aptian-Albian) of Brazil, North Africa, and possibly Mexico, as well as in the Upper Cretaceous of Morocco (Cenomanian), Madagascar and France. The Axelrodichthys of the Lower Cretaceous frequented both brackish and coastal marine waters while the most recent species lived exclusively in fresh waters. The French specimens are the last known fresh water coelacanths. Most of the species of this genus reached 1 metre to 2 metres in length. Axelrodichthys was named in 1986 by John G. Maisey in honor of the American ichthyologist Herbert R. Axelrod.
Mawsonia is an extinct genus of prehistoric coelacanth fish, and the largest of this group, ranging from an estimated 3.5 metres up to 6.3 metres long. It lived during the Cretaceous period. Fossils have been found in the Bahia Group, Romualdo, Alcântara and Missão Velha Formations of Brazil, South America, as well as the Continental Intercalaire of Algeria and Tunisia, the Ain el Guettar Formation of Tunisia, and the Babouri Figuil Basin of Cameroon, Africa. Mawsonia was first described by British paleontologist Arthur Smith Woodward in 1907. The type species is Mawsonia gigas, named and described in 1907. Numerous distinct species have been described since then. M. brasiliensis, M. libyca, M. minor, and M. ubangiensis have all been proposed to be synonyms of M. gigas, although Léo Fragoso's 2014 thesis on mawsoniids finds M. brasiliensis valid and cautions against synonymizing M. minor without further examination. Several recent publications consider M. brasiliensis to be valid as well. Although initially considered to belong to this genus, "Mawsonia" lavocati is most likely referable to Axelrodichthys instead.
Santanichthys diasii is a species of extinct fish that existed around 115 million years ago during the Albian age. S. diasii is regarded as the basal-most characiform, and is the earliest known member of Otophysi. It appears as a small fish, similar in appearance to a modern-day herring little more than 30 millimeters in length. Its most striking characteristic is the presence of a Weberian apparatus, which makes it the most primitive known member of the order Characiformes, the order in which modern-day tetras are classified. Santanichthys has been unearthed from numerous locations throughout Brazil, in rocks dating to the Cretaceous Period. Its presence in these strata is seen as an indicator for the biogeography and evolution of its order.
Plectocretacicus is an extinct genus of prehistoric ray-finned fish that lived during the lower Cenomanian. It contains a single species, P. clarae. Plectocretacicus is the earliest known member of the order Tetraodontiformes.
Lissoberyx is an extinct genus of prehistoric ray-finned fish belongon to the family Trachichthyidae. Lissoberyx is a trachichthyid, but it shows more resemblance to the holocentrids than any other trachichthyid.
Oshunia is an extinct genus of prehistoric bony fish that lived during the Albian. Fossils of the genus were found in the Romualdo Formation of the Araripe Basin, northeastern Brazil. Other authors assign a Cenomanian age to the fish.
Mesoclupea showchangensis is an extinct ichthyodectiform ray-finned fish that lived in freshwater environments in what is now China during the Early Cretaceous epoch. It differs from its sister genus, Chuhsiungichthys, primarily by having a more posteriorly-placed dorsal fin.
Retodus is an extinct genus of prehistoric lungfish found in Cretaceous-aged freshwater strata of Egypt, Algeria and Niger. The type species, R. tuberculatus, was named in 2006. It was originally named as a species of Ceratodus and Neoceratodus in 1963.
Ptychoceratodus is an extinct genus of prehistoric sarcopterygians or lobe-finned fish originally named as a species of Ceratodus in 1837. It was a lungfish from the Mesozoic era (Triassic-Cretaceous), and the only members of the family Ptychoceratodontidae. One species, P. oldhami, was named in 2018 based on remains from the Carnian-aged Tiki Formation (India). The first named species, which is also the type species, is P. phillipsi, which was named in 1837 by Louis Agassiz as a species of Ceratodus and moved to a separate genus in 1926.
Cretatriacanthus is an extinct genus of prehistoric ray-finned fish. It contains a single species, C. guidotti.
Coelodus is an extinct genus of fish in the family Pycnodontidae from the Late Jurassic to early Paleocene (Danian). Fossils of the genus have been found in:
Palaeobalistum is an extinct genus of prehistoric ray-finned fish which ranged from the Cretaceous to Eocene periods.
Koonwarria manifrons is an extinct prehistoric ray-finned fish that lived in a polar lake in what is now Koonwarra, Victoria, Australia. Fossils have been retrieved from the Strzelecki Group.
Peipiaosteus is an extinct genus of prehistoric ray-finned fish, closely related to living sturgeon and paddlefish. Its fossils are found in the Early Cretaceous Jiufotang Formation, Pani Lake, Liaoning Province, China.
Phareodus is a genus of freshwater fish from the Paleocene to the Eocene of Australia, Europe and North and South America.
Aokiichthys is an extinct genus of basal osteoglossoid from an Early Cretaceous freshwater palaeolake of what is now Kyushu, Japan. The genus formed a species radiation in the First Formation within the Wakino Subgroup of the Kwanmon Group, as a dominant member and namesake of the Nipponamia-Aokiichthys fauna. The genus became extinct at the end of either the 1st Formation, or possibly during the 2nd Formation, when the palaeolake became shallower.
Myledaphus is a genus of Late Cretaceous cartilaginous fish whose fossils are known from Canada, the Midwest of the United States, Olmos Formation of the Difunta Group of Mexico, and the Beshtyubin and Bissekty Formations of Uzbekistan. It was a freshwater guitarfish that probably reached a length of 3 feet (91 cm), and had teeth adapted for a durophagous diet of animals such as clams. Most taxonomic authories place the genus in the Rhinobatidae, with a few placing it with prehistoric sharks (Anacoracidae), although the latter may be incorrect. Two species are known: Myledaphus bipartitus, the type species, and Myledaphus araucanus, named in 2019.
Masahiro Sato is a Japanese ice hockey player. He competed in the men's tournament at the 1964 Winter Olympics.
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