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Macrosemiidae
Macrosemiidae is an extinct family of ginglymodian fish. The family first appeared during the Middle Triassic and disappeared during the Late Cretaceous. The group has been found in rock formations in Africa, Australia, Eurasia and North America. As ginglymodians, their closest living relatives are gars, with them being typically placed as nested within the Semionotiformes. Many members of the family have elongated dorsal fins, often associated with adjacent area of skin which was free of scales. These fins were likely undulated for use in precision swimming. Their body morphology suggests that they were slow swimmers that were capable of maneuvering around complex topography, such as reef environments. Taxonomy *†Order Macrosemiiformes **†Family Macrosemiidae, Thiollière, 1858 *** Genus †''Eosemionotus'' *** Genus †''Agoultichthys'' *** Genus †''Aphanepygus'' *** Genus †''Disticholepis'' *** Genus †''Enchelyolepis'' *** Genus †''Orthurus'' *** Genus †''Petal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Semionotiformes
Semionotiformes is an order of ray-finned fish known from the Middle Triassic (Anisian) to the Late Cretaceous (Maastrichtian). Their closest living relatives are gars (Lepisosteidae), with both groups belonging to the clade Ginglymodi within the Holostei. The group includes both freshwater (Semionotidae) and marine (Callipurbeckiidae, Macrosemiidae) adapted forms. Many members of the family Macrosemiidae (which are usually included in Semionotiformes but sometimes placed in their order), had elongated dorsal fins, often associated with an adjacent area of skin which was free of scales. These fins were likely undulated for use in precision swimming. The body morphology of macrosemiids suggests that they were slow swimmers who were capable of maneuvering around complex topography, such as reef environments. Classification * Order †Semionotiformes Arambourg & Bertin 1958 sensu López-Arbarello 2012 ** Genus ?†'' Orthurus'' Kner 1866 ** Genus †'' Sangiorgioichthys'' Tintori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macrosemiiformes 1
Macrosemiidae is an extinct family of ginglymodian fish. The family first appeared during the Middle Triassic and disappeared during the Late Cretaceous. The group has been found in rock formations in Africa, Australia, Eurasia and North America. As ginglymodians, their closest living relatives are gars, with them being typically placed as nested within the Semionotiformes. Many members of the family have elongated dorsal fins, often associated with adjacent area of skin which was free of scales. These fins were likely undulated for use in precision swimming. Their body morphology suggests that they were slow swimmers that were capable of maneuvering around complex topography, such as reef environments. Taxonomy *†Order Macrosemiiformes **†Family Macrosemiidae, Thiollière, 1858 *** Genus †''Eosemionotus'' *** Genus †'' Agoultichthys'' *** Genus †'' Aphanepygus'' *** Genus †'' Disticholepis'' *** Genus †'' Enchelyolepis'' *** Genus †'' Orthurus'' *** Genus †'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uarbryichthys
''Uarbryichthys'' is a genus of primitive ginglymodian ray-finned fish from fossil beds near the Talbragar River Bed. The various species were lake-dwelling fish that lived during the Upper Jurassic of Australia, and are closely related to the macrosemiids. The living animal would have had a superficial resemblance to a very small porgie, scup, or sea bream, but with a heterocercal Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and help the fish swim. Apart from the tail or caudal fin, fish fins have no direct connection with the back bone and are supported only ... tail fin. References External linksPaleobiology Database Entry Prehistoric ray-finned fish genera Late Jurassic bony fish Prehistoric fish of Australia Macrosemiiformes Jurassic fish of Australia {{Macrosemiiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ginglymodi
Ginglymodi is a clade of ray-finned fish containing modern-day gars (Lepisosteidae) and their extinct relatives (including the family (biology), family Lepidotidae) in the Order (biology), order Lepisosteiformes, the extinct orders Semionotiformes and Kyphosichthyiformes, and various other extinct taxa. Ginglymodi is one of the two major subgroups of the infraclass Holostei, the other one being Halecomorphi, which contains the bowfin and eyespot bowfin and their fossil relatives. Fossil record The fossil record of ginglymodians goes back at least to the Anisian stage (geology), stage of the Triassic period (geology), period, over 240 million years ago. ''Eosemionotus'' is one of the earliest ginglymodians. ''Acentrophorus'', another taxon from the Middle and Late Permian, and ''Paracentrophorus'' from the Early Triassic epoch (geology), epoch, could be even earlier members of the group. Ginglymodi was biodiversity, diverse and widespread during the Mesozoic era (geology), era, bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enchelyolepis
''Enchelyolepis'' (meaning "eel-like scale") is an extinct genus of prehistoric marine ray-finned fish known from the Late Jurassic and Early Cretaceous of Europe. It was a member of the Macrosemiidae, a family of ginglymodians distantly related to modern gars, and contains two species that were both previously described as species of ''Macrosemius''. The following species are known: * †''E. andrewsi'' ( Woodward, 1895) (type species) - Early Cretaceous (Berriasian) of England (middle Purbeck Group) * †''E. pectoralis'' ( Sauvage, 1883) - Late Jurassic (Tithonian) of France ( Portland Group) Both species were very small for their order, with ''E. andrewsi'' being only in length. See also * Prehistoric fish * List of prehistoric bony fish This list of prehistoric bony fish is an attempt to create a comprehensive listing of all Genus, genera from the fossil record that have ever been considered to be bony fish (class Osteichthyes), excluding purely vernacular terms. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aphanepygus
''Aphanepygus'' is an extinct genus of prehistoric marine holostean ray-finned fish that lived during the upper Cenomanian. It inhabited the former Tethys Ocean, with remains known from Lebanon and Croatia. Its exact affinities are uncertain, although it is usually recovered as a relative of the macrosemiids. However, other authorities recover it in the Ionoscopiformes. The following species are known: * ''A. dorsalis'' Davis, 1887 (Cenomanian of Lebanon) * ''A. elegans'' Bassani, 1879 (Cenomanian of Croatia) See also * Prehistoric fish * List of prehistoric bony fish This list of prehistoric bony fish is an attempt to create a comprehensive listing of all Genus, genera from the fossil record that have ever been considered to be bony fish (class Osteichthyes), excluding purely vernacular terms. The list includ ... References Macrosemiiformes Prehistoric ray-finned fish genera Cretaceous fish of Europe Late Cretaceous fish of Asia Fossils of Croatia Fossils of Le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eosemionotus
''Eosemionotus'' ("dawn ''Semionotus''") is an extinct genus of prehistoric marine macrosemiid ray-finned fish from the Middle Triassic (Anisian to Ladinian). It was a speciose genus known from throughout Europe, including formations of the Muschelkalk. The following species are known: * ''E. ceresiensis'' Bürgin, 2004 - early Ladinian of Italy (Besano Formation) * ''E. diskosomus'' López-Arbarello ''et al.'', 2019 - early Ladinian of Italy ( Meride Formation) and Switzerland ( Cassina Formation) * ''E. minutus'' López-Arbarello ''et al.'', 2019 - early Ladinian of Italy (Meride Formation) * ''E. ratumensis'' Diependaal ''et al.'' 2024 - mid-late Anisian of the Netherlands ( Vossenveld Formation) * ''E. sceltrichensis'' López-Arbarello ''et al.'', 2019 - Ladinian of Switzerland (Meride Formation) * ''E. vogeli'' ( von Fritsch, 1906) - late Anisian of Germany ( Heilbronn Formation) (='' Allolepidotus vogeli'' von Fritsch, 1906) In addition, indeterminate remains of ''Eosemio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macrosemius
''Macrosemius'' is an extinct genus of macrosemiid fish known from the Late Jurassic of Germany. See also * Prehistoric fish * List of prehistoric bony fish This list of prehistoric bony fish is an attempt to create a comprehensive listing of all Genus, genera from the fossil record that have ever been considered to be bony fish (class Osteichthyes), excluding purely vernacular terms. The list includ ... References Prehistoric ray-finned fish genera Macrosemiiformes Jurassic bony fish Prehistoric fish of Europe {{Jurassic-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Cretaceous
The Late Cretaceous (100.5–66 Ma) is the more recent of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''creta'', the Latin word for the white limestone known as chalk. The chalk of northern France and the white cliffs of south-eastern England date from the Cretaceous Period. Climate During the Late Cretaceous, the climate was warmer than present, although throughout the period a cooling trend is evident. The tropics became restricted to equatorial regions and northern latitudes experienced markedly more seasonal climatic conditions. Geography Due to plate tectonics, the Americas were gradually moving westward, causing the Atlantic Ocean to expand. The Western Interior Seaway divided North America into eastern and western halves; Appalachia and Laramidia. India maintained a northward course towards Asia. In the Southern Hemisphere, Aus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Triassic
The Late Triassic is the third and final epoch (geology), epoch of the Triassic geologic time scale, Period in the geologic time scale, spanning the time between annum, Ma and Ma (million years ago). It is preceded by the Middle Triassic Epoch and followed by the Early Jurassic Epoch. The corresponding series (stratigraphy), series of rock beds is known as the Upper Triassic. The Late Triassic is divided into the Carnian, Norian and Rhaetian Geologic time scale, ages. Many of the first dinosaurs evolved during the Late Triassic, including ''Plateosaurus'', ''Coelophysis'', ''Herrerasaurus'', and ''Eoraptor''. The Triassic–Jurassic extinction event began during this epoch and is one of the five major mass extinction events of the Earth. Etymology The Triassic was named in 1834 by Friedrich August von Namoh, Friedrich von Alberti, after a succession of three distinct rock layers (Greek meaning 'triad') that are widespread in southern Germany: the lower Buntsandstein (colourful ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiopsis
''Ophiopsis'' is an extinct genus of prehistoric ray-finned fish belonging to the family Ophiopsidae. Specimens are known from the Tithonian-age Solnhofen Formation of Bavaria, Germany. Taxonomy The type species, ''Ophiopsis muensteri'', was previously placed in ''Furo'' by several authors who mistakenly considered '' Ophiopsiella procera'' the ''Ophiopsis'' type species. However, Lane and Ebert (2015) noted that ''Ophiopsis'' originally included ''O. muensteri'' only when first erected by Agassiz (1834), so they re-assigned ''procera'' and some ''Ophiopsis'' species to the new genus ''Ophiopsiella''.Lane, J. A. & Ebert, M., 2015: A taxonomic reassessment of Ophiopsis (Halecomorphi, Ionoscopiformes), with a revision of Upper Jurassic species from the Solnhofen Archipelago, and a new genus of Ophiopsidae. Journal of Vertebrate Paleontology, 35 (1): e883238. doi: 10.1080/02724634.2014.883238 See also * Prehistoric fish * List of prehistoric bony fish This list of prehistoric bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
