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Perleidiformes
Perleidiformes are an extinct order of prehistoric ray-finned fish from the Triassic period Although numerous Triassic taxa have been referred to Perleidiformes, which ones should be included for it to form a monophyletic group is a matter of ongoing scientific debate. Classification ** Family † Cleithrolepididae Wade 1935 corrig. leithrolepidae Wade 1935; Hydropessidae Hutchinson 1973*** Genus †''Hydropessum'' Broom 1909 *** Genus †'' Cleithrolepidina'' Berg 1955 *** Genus †''Cleithrolepis'' Egerton 1864 *** Genus †''Dipteronotus'' Egerton 1864 ** Suborder †Cephaloxenoidei Lehman 1966 *** Family † Cephaloxenidae Brough 1939 **** Genus †''Cephaloxenus'' Brough 1939 ** Suborder †Perleidoidei *** Family †Platysiagidae Brough 1939 sensu Neuman & Mutter 2005 **** Genus †'' Caelatichthys'' Lombardo 2002 **** Genus †'' Helmolepis'' Stensiö 1932 **** Genus †'' Platysiagum'' Egerton 1872 *** Family † Polzbergiidae Griffin 1977 **** Genus †'' Luopingichth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perleididae
Perleidiformes are an extinct order (biology), order of prehistoric ray-finned fish from the Triassic period (geology), period Although numerous Triassic taxa have been referred to Perleidiformes, which ones should be included for it to form a monophyletic group is a matter of ongoing scientific debate. Classification ** Family †Cleithrolepididae Wade 1935 corrig. [Cleithrolepidae Wade 1935; Hydropessidae Hutchinson 1973] *** Genus †''Hydropessum'' Broom 1909 *** Genus †''Cleithrolepidina'' Berg 1955 *** Genus †''Cleithrolepis'' Egerton 1864 *** Genus †''Dipteronotus'' Egerton 1864 ** Suborder †Cephaloxenoidei Lehman 1966 *** Family †Cephaloxenidae Brough 1939 **** Genus †''Cephaloxenus'' Brough 1939 ** Suborder †Perleidoidei *** Family †Platysiagidae Brough 1939 sensu Neuman & Mutter 2005 **** Genus †''Caelatichthys'' Lombardo 2002 **** Genus †''Helmolepis'' Stensiö 1932 **** Genus †''Platysiagum'' Egerton 1872 *** Family †Polzbergiidae Griffin 1977 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perleidus
''Perleidus'' is an extinct genus of ray-finned fish from the Triassic period. Fossils have been found in the Middle Triassic of Italy, Switzerland, and China. The inclusion of Early Triassic species in the genus ''Perleidus'' was questioned. Ecology ''Perleidus'' was a marine predatory fish, about in length. Its jaws hung vertically under the braincase, allowing them to open wide, a feature it shared with the earlier palaeonisciform fish, from which it may have been descended. Unlike those earlier fish, however, ''Perleidus'' and its relatives had highly flexible dorsal and anal fins, with a reduced number of fin rays. This would have made the fish more agile in the water. Classification The genus ''Perleidus'' currently comprises two species: ''P. altolepis'' (type) and ''P. sinensis''. The type species was originally described as ''Semionotus altolepis'' by Wilhelm Deecke. The genus ''Perleidus'' was later erected for this species, named after the comune (municipality ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ray-finned Fish
Actinopterygii (; ), members of which are known as ray-finned fishes, is a class of bony fish. They comprise over 50% of living vertebrate species. The ray-finned fishes are so called because their fins are webs of skin supported by bony or horny spines (rays), as opposed to the fleshy, lobed fins that characterize the class Sarcopterygii (lobe-finned fish). These actinopterygian fin rays attach directly to the proximal or basal skeletal elements, the radials, which represent the link or connection between these fins and the internal skeleton (e.g., pelvic and pectoral girdles). By species count, actinopterygians dominate the vertebrates, and they constitute nearly 99% of the over 30,000 species of fish. They are ubiquitous throughout freshwater and marine environments from the deep sea to the highest mountain streams. Extant species can range in size from ''Paedocypris'', at , to the massive ocean sunfish, at , and the long-bodied oarfish, at . The vast majority of Actinoptery ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cleithrolepis
''Cleithrolepis'' is an extinct genus of ray-finned fish from the Triassic. The genus grew to about long. It had a weak lower jaw with teeth only at the tip. ''Cleithrolepis'' lived in rivers, billabongs and lakes in the large braided river system that deposited the Hawkesbury Sandstone Sydney sandstone is the common name for Sydney Basin Hawkesbury Sandstone, one variety of which is historically known as Yellowblock, and also as "yellow gold" a sedimentary rock named after the Hawkesbury River north of Sydney, where this ... in what is now New South Wales, with fossils found in shale lenses within the sandstone. References * Fossils (Smithsonian Handbooks) by David Ward (Page 213) External linksFossil of freshwater fish, ''Cleithrolepis granulata''- Somersby, New South Wales, Middle Triassic, 240 million years ago. Triassic bony fish Prehistoric neopterygii Mesozoic fish of Europe Prehistoric bony fish genera {{paleo-rayfinned-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ctenognathichthys
''Ctenognathichthys'' is an extinct genus of prehistoric bony fish that lived during the early Ladinian stage of the Middle Triassic epoch. It was a small fish measuring long. See also * Prehistoric fish * List of prehistoric bony fish A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College Albert A. List College of Jewish Studies, known simply as List College, is the undergraduate school of the J ... References Middle Triassic fish Prehistoric neopterygii Triassic fish of Europe {{triassic-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Platysiagidae
Platysiagidae is an extinct family of stem-neopterygian ray-finned fish which lived from the Early Triassic to the Early Jurassic. It includes the genera ''Helmolepis'', ''Platysiagum'' and possibly '' Caelatichthys''. The family was formerly placed within the paraphyletic order Perleidiformes, but it is now considered to belong to the separate, monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ... order Platysiagiformes. References Prehistoric neopterygii Prehistoric ray-finned fish families {{Paleo-rayfinned-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Serrolepis
''Serrolepis'' is an extinct genus of prehistoric bony fish. It was a highly-specialized small stem-neopterygian with strong jaws and a short head. Body shape is variable and known material appears to fall within several size classes & two morphotypes. Fossils of ''Serrolepis'' are known from the Middle Triassic Erfurt Formation of Germany. See also * Prehistoric fish * List of prehistoric bony fish A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College Albert A. List College of Jewish Studies, known simply as List College, is the undergraduate school of the J ... References External links Bony fish in the online Sepkoski Database Prehistoric neopterygii Prehistoric bony fish genera {{paleo-bony-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gabanellidae
Gabanellia is an extinct genus of ray-finned fish from the Late Triassic The Triassic ( ) is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.36 Mya. The Triassic is the first and shortest period .... References Feeding specializations in Late Triassic fishes Prehistoric ray-finned fish genera Prehistoric neopterygii Triassic bony fish Late Triassic fish Fossils of Italy {{Triassic-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dipteronotus
''Dipteronotus'' is an extinct genus of stem group, stem-neopterygian Actinopterygii, ray-finned fish that existed during the Triassic period (geology), period in what is now Europe. As a typical feature, it had several ridge scales in front of its dorsal fin that created a spine-like structure. See also * Prehistoric fish * List of prehistoric bony fish References External links Bony fish in the online Sepkoski Database Prehistoric ray-finned fish genera Triassic bony fish Prehistoric neopterygii Prehistoric fish of Africa Triassic fish of Europe {{Triassic-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colobodontidae
Colobodontidae is an extinct family of marine stem-neopterygian fish known from the Middle to Late Triassic of Asia and Europe. As currently defined, it contains three genera: '' Colobodus'', '' Crenilepis'' and '' Feroxichthys''. The colobodontids were medium-sized, somewhat deep-bodied fishes with a durophagous diet. Like many other stem-neopterygians, they have traditionally been placed in the order Perleidiformes, which is now thought to be paraphyletic In taxonomy (general), taxonomy, a group is paraphyletic if it consists of the group's most recent common ancestor, last common ancestor and most of its descendants, excluding a few Monophyly, monophyletic subgroups. The group is said to be pa .... Classification The cladogram below follows Ma ''et al.'' (2021) and shows the relationships between Colobodontidae and other neopterygian clades: References Prehistoric neopterygii Prehistoric ray-finned fish families {{Triassic-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydropessum
''Hydropessum'' is an extinct genus of prehistoric bony fish that lived during the Early Triassic epoch. See also * Prehistoric fish * List of prehistoric bony fish A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College Albert A. List College of Jewish Studies, known simply as List College, is the undergraduate school of the J ... References Early Triassic fish Prehistoric neopterygii {{triassic-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cephaloxenus
''Cephaloxenus'' is an extinct genus of prehistoric bony fish that lived during the early Ladinian stage of the Middle Triassic epoch. See also * Prehistoric fish * List of prehistoric bony fish A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College Albert A. List College of Jewish Studies, known simply as List College, is the undergraduate school of the J ... References Middle Triassic fish Peltopleuriformes Triassic fish of Europe {{peltopleuriformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
