Synonyms for neopterygian or Related words with neopterygian
Examples of "neopterygian"
Scheenstia is an extinct genus of
ray-finned fish from the Cretaceous period. Fossils have been found in Bavaria, France, and England.
Acentrophorus is an extinct genus of prehistoric ray-finned fish from the Permian and Triassic periods. Fossils have been found in Australia, Germany and the United Kingdom. It was the oldest known
The Halecostomi are a group of
fish uniting the halecomorphs (represented by the living bowfin and many extinct groups) and the teleosts, the largest radiation of bony fish.
Callipurbeckia is an extinct genus of
ray-finned fish from the Jurassic and Cretaceous periods. Fossils have been found in Germany, Tanzania, and England. It contains three species, which were previously classified in the related genus "Lepidotes".
Several early groups, now extinct, branched off from
ancestors before the teleosts appeared. These include the Pachycormiformes and Aspidorhynchiformes of the Mesozoic era. These fish had elongated bodies; some were filter-feeders, while others ate larger prey.
Dapedium is an extinct genus of primitive
ray-finned fish. The first-described finding was an example of "D. politum", found in the Lower Lias of Lyme Regis, on the Jurassic Coast of England (Leach 1822). "Dapedium" lived in the late Triassic and Jurassic periods.
Discoserra pectinodon is a prehistoric fish from the Mississippian of Montana, member of the Guildayichthyiformes order, with a round body and a skull possessing primitive and modern traits. "Discoserra" is about 60 mm long. In 2006, "Discoserra" was hypothesized to be a stem
"Kentrosaurus" would have coexisted with fellow ornithischians like "Dysalotosaurus lettowvorbecki"; the sauropods "Giraffatitan brancai", "Dicraeosaurus hansemanni" and "D. sattleri", "Janenschia africana", "Tendaguria" "tanzaniensis" and "Tornieria africanus"; theropods "Allosaurus" "tendagurensis", "Ceratosaurus" "roechlingi", "Ceratosaurus" "ingens," "Elaphrosaurus bambergi", "Veterupristisaurus milneri" and "Ostafrikasaurus crassiserratus"; and the pterosaur "Tendaguripterus recki". Other organisms that inhabited the Tendaguru included corals, echinoderms, cephalopods, bivalves, gastropods, decapods, sharks,
fish, crocodilians and small mammals like "Brancatherulum tendagurensis".
Competing hypotheses and debates continue over the evolution of "Amia" and relatives, including their relationship among basal extant teleosts, and organization of clades. Bowfin are the last remaining member of Halecomorphi, a group that includes many extinct species in several families. Halecomorphs were generally accepted as the sister group to Teleostei but not without question. While a halecostome pattern of
clades was produced in morphology-based analyses of extant actinopterygians, a different result was produced with fossil taxa which showed a monophyletic Holostei. Monophyletic Holostei were also recovered by at least two nuclear gene analyses, in an independent study of fossil and extant fishes, and in an analysis of ultraconserved genomic elements.
is an extinct genus of semionotid
ray-finned fish from the Jurassic period (Toarcian age) and Early Cretaceous. Fossils have been found in marine sediments of France, England, and Germany, and in Early Cretaceous sediments of Brazil and Bornholm, Denmark (Jydegaard Formation). In 1895, many species were assigned to it by Arthur Smith Woodward. They include, "L. elvensis", "L. semiserratus", "L. tuberculatus", "L. gallineki", "L. leedsi", "L. latifrons", "L. haydeni", "L. occidentalis", "L. macrocheirus", "L. subovatus", "L. minor", "L. affinis", "L. unguiculatus", "L. laevis", "L. maximus", "L. mantelli", "L. degenhardti", "L. hauchecorni", "L. mawsoni", "L. notopterus" and "L.? pustulatus". Numerous additional species have been assigned to it which Woodward considered indistinguishable from others.
Electroreception occurred early in evolutionary history with the evolution of an ampullary sensory system that included receptors able to detect weak electric signals in the environment (less than 1ųV/cm or 50 Hz). Sense organs specialized for electroreception have only been found among vertebrates, and around 8.600 species are known to be electroreceptive. The majority of teleosts and amniotes do not have an electroreceptive system, but the distribution of electroreception in terms of evolution involves different classes of fish. First, there is an origin of a common ancestor of current existent vertebrates (close to lampreys and gnathostomes). This ancestor evolved a lateral line that is important in processing sensory information and present in today’s hagfishes. Ampullary receptors are ancestral to jawed fish, for lampreys and agnathans were found to have ampullary receptors 400 million years earlier. Second, there is a loss of electroreception in amniotes. This could be due to the fact that air is a poor medium to effectively conduct the electric fields, unlike water. Third, there is also a loss of electroreception in gars, bowfin, and teleosts (
fishes). Ampullary receptors are present in all surviving cartilaginous fishes and bony fishes except a few species present in Neopterygii (which include gars, bowfins, and teleosts) Fourth, monotremes and a least three groups of fresh-water teleosts re-evolved electroreception. Fifth, a group of teleosts, Xenomystinae, acquired passive electrolocation with low frequency sensitive ampullary receptors. Sixth, another group of teleosts, Mormyroids, evolved passive electrolocation and active location, as well as a pulse type EOD in active electrolocation. Seventh, Silurifiormes and Gymnoformes evolved passive electrolocation, and Gymnoformes also evolved active electrolocation with a pulse type or wave type EODs.
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