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Utatsusaurus, the Glossary

Utatsusaurus hataii is the earliest-known ichthyopterygian which lived in the Early Triassic period (c. 245–250 million years ago).^[1]

45 relations: Amniote, British Columbia, Canada, Cartorhynchus, Chaohusaurus, Cladogram, Computer-generated imagery, Crocodile, Cymbospondylidae, Diapsid, Distortion, Dorsal fin, Early Triassic, Fish, Grippia, Gulosaurus, Hokkaido University, Holotype, Hueneosauria, Hupehsuchia, Ichthyopterygia, Ichthyosauria, Ichthyosauriformes, Ichthyosauromorpha, Japan, List of ichthyosauromorph genera, List of ichthyosauromorph type specimens, Lizard, Minamisanriku, Miyagi Prefecture, Monophyly, Omphalosauridae, Parvinatator, Petrolacosaurus, Phylogenetic tree, Sauria, Sclerocormus, Skull, Snake, Timeline of ichthyosaur research, Undulatory locomotion, University of Calgary, University of California, Berkeley, Utatsu, Miyagi, 2011 Tōhoku earthquake and tsunami.
Early Triassic reptiles of Asia
Early Triassic reptiles of North America
Ichthyosauriforms

Amniote

Amniotes are tetrapod vertebrate animals belonging to the clade Amniota, a large group that comprises the vast majority of living terrestrial and semiaquatic vertebrates.

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British Columbia

British Columbia (commonly abbreviated as BC) is the westernmost province of Canada.

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Canada

Canada is a country in North America.

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Cartorhynchus (meaning "shortened snout") is an extinct genus of early ichthyosauriform marine reptile that lived during the Early Triassic epoch, about 248 million years ago. Utatsusaurus and Cartorhynchus are early Triassic reptiles of Asia and ichthyosauriforms.

See Utatsusaurus and Cartorhynchus

Chaohusaurus

Chaohusaurus is an extinct genus of basal ichthyosauriform, depending on definition possibly ichthyosaur, from the Early Triassic of Chaohu and Yuanan, China. Utatsusaurus and Chaohusaurus are early Triassic reptiles of Asia and ichthyosauriforms.

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Cladogram

A cladogram (from Greek clados "branch" and gramma "character") is a diagram used in cladistics to show relations among organisms.

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Computer-generated imagery

Computer-generated imagery (CGI) is a specific-technology or application of computer graphics for creating or improving images in art, printed media, simulators, videos and video games.

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Crocodile

Crocodiles (family Crocodylidae) or true crocodiles are large semiaquatic reptiles that live throughout the tropics in Africa, Asia, the Americas and Australia.

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Cymbospondylidae

Cymbospondylidae is an extinct family of hueneosaurian Ichthyosaurs known from the Middle Triassic of Europe, North America, and Asia.

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Diapsid

Diapsids ("two arches") are a clade of sauropsids, distinguished from more primitive eureptiles by the presence of two holes, known as temporal fenestrae, in each side of their skulls.

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Distortion

In signal processing, distortion is the alteration of the original shape (or other characteristic) of a signal.

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Dorsal fin

A dorsal fin is a fin located on the back of most marine and freshwater vertebrates within various taxa of the animal kingdom.

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Early Triassic

The Early Triassic is the first of three epochs of the Triassic Period of the geologic timescale.

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Fish

A fish (fish or fishes) is an aquatic, anamniotic, gill-bearing vertebrate animal with swimming fins and a hard skull, but lacking limbs with digits.

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Grippia

Grippia is a genus of early ichthyopterygian, an extinct group of reptiles that resembled dolphins. Utatsusaurus and Grippia are early Triassic reptiles of Asia.

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Gulosaurus

Gulosaurus is an extinct genus of basal grippidian ichthyopterygian known from the Early Triassic Vega-Phroso Siltstone Member of the Sulphur Mountain Formation of east-central British Columbia, Canada. Utatsusaurus and Gulosaurus are early Triassic reptiles of North America and ichthyosauriforms.

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Hokkaido University

, or, is a public research university in Sapporo, Hokkaido, Japan.

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Holotype

A holotype is a single physical example (or illustration) of an organism used when the species (or lower-ranked taxon) was formally described.

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Hueneosauria

The Hueneosauria are a group of Ichthyosauria, living during the Mesozoic.

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Hupehsuchia

Hupehsuchia is an order of diapsid reptiles closely related to ichthyosaurs. Utatsusaurus and Hupehsuchia are early Triassic reptiles of Asia.

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Ichthyopterygia

Ichthyopterygia ("fish flippers") was a designation introduced by Sir Richard Owen in 1840 to designate the Jurassic ichthyosaurs that were known at the time, but the term is now used more often for both true Ichthyosauria and their more primitive early and middle Triassic ancestors.

See Utatsusaurus and Ichthyopterygia

Ichthyosauria

Ichthyosauria (Ancient Greek for "fish lizard" – and) is an order of large extinct marine reptiles sometimes referred to as "ichthyosaurs", although the term is also used for wider clades in which the order resides.

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Ichthyosauriformes

The Ichthyosauriformes are a group of marine reptiles, belonging to the Ichthyosauromorpha, that lived during the Mesozoic.

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Ichthyosauromorpha

The Ichthyosauromorpha are an extinct clade of marine reptiles consisting of the Ichthyosauriformes and the Hupehsuchia, living during the Mesozoic.

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Japan

Japan is an island country in East Asia, located in the Pacific Ocean off the northeast coast of the Asian mainland.

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List of ichthyosauromorph genera

This list of ichthyosauromorphs is a comprehensive listing of all genera that have ever been included in the clade Ichthyosauromorpha, excluding purely vernacular terms.

See Utatsusaurus and List of ichthyosauromorph genera

List of ichthyosauromorph type specimens

This list of ichthyosauromorph type specimens is a list of fossils serving as the official standard-bearers for inclusion in the species and genera of the reptile clade Ichthyosauromorpha (Hupehsuchia included).

See Utatsusaurus and List of ichthyosauromorph type specimens

Lizard

Lizard is the common name used for all squamate reptiles other than snakes (and to a lesser extent amphisbaenians), encompassing over 7,000 species, ranging across all continents except Antarctica, as well as most oceanic island chains.

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Minamisanriku

is a town in Miyagi Prefecture, Japan.

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Miyagi Prefecture

is a prefecture of Japan located in the Tōhoku region of Honshu.

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Monophyly

In biological cladistics for the classification of organisms, monophyly is the condition of a taxonomic grouping being a clade – that is, a grouping of taxa which meets these criteria.

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Omphalosauridae

Omphalosauridae is an extinct family of Ichthyosauriformes known from the Early to Late Triassic of Europe, North America, and Asia. Utatsusaurus and Omphalosauridae are ichthyosauriforms.

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Parvinatator

Parvinatator, from Latin, “parvus” little and “natator” swimmer, is an extinct genus of small ichthyopterygian marine reptile that lived during the Early to Middle Triassic. Utatsusaurus and Parvinatator are early Triassic reptiles of North America and ichthyosauriforms.

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Petrolacosaurus

Petrolacosaurus ("rock lake lizard") is an extinct genus of diapsid reptile from the late Carboniferous period.

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Phylogenetic tree

A phylogenetic tree, phylogeny or evolutionary tree is a graphical representation which shows the evolutionary history between a set of species or taxa during a specific time.

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Sauria

Sauria is the clade containing the most recent common ancestor of Archosauria (which includes crocodilians and birds) and Lepidosauria (which includes squamates and the tuatara), and all its descendants.

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Sclerocormus

Sclerocormus is an extinct genus of ichthyosauriform from the early Triassic period. Utatsusaurus and Sclerocormus are early Triassic reptiles of Asia and ichthyosauriforms.

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Skull

The skull is a bone protective cavity for the brain.

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Snake

Snakes are elongated, limbless reptiles of the suborder Serpentes.

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Timeline of ichthyosaur research

This timeline of ichthyosaur research is a chronological listing of events in the history of paleontology focused on the ichthyosauromorphs, a group of secondarily aquatic marine reptiles whose later members superficially resembled dolphins, sharks, or swordfish.

See Utatsusaurus and Timeline of ichthyosaur research

References

[1] https://en.wikipedia.org/wiki/Utatsusaurus

Also known as Utatsusauridae, Utatsusaurus hataii.

Utatsusaurus, the Glossary

Table of Contents

See also

Early Triassic reptiles of Asia

Early Triassic reptiles of North America

Ichthyosauriforms

References