| Barracudasaurus | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | † Ichthyosauria |
| Infraorder: | † Mixosauria |
| Genus: | † Barracudasaurus Jiang et al. (2005) |
Barracudasaurus is a dubious [1] genus of ichthyosaur from the Triassic of China, containing the single species B. maotaiensis. [2] [3]
Barracudasaurus had elongated, conical premaxillary teeth with rounded cross-section and wide spacing. The maxilla is short anteriorly. [2]
Shastasauridae is an extinct family of Triassic ichthyosaurs that includes the genera Shastasaurus, Shonisaurus and Himalayasaurus. Many other Triassic ichthyosaurs have been assigned to Shastasauridae in the past, but recent phylogenetic analyses suggest that these species form an evolutionary grade of early ichthyosaurs rather than a true clade or evolutionary grouping that can be called Shastasauridae.
Chaohusaurus is an extinct genus of basal ichthyopterygian, depending on definition possibly ichthyosaur, from the Early Triassic of Chaohu and Yuanan, China.
Contectopalatus was a primitive ichthyosaur, an extinct fish-like marine reptile from the Middle Triassic of Germany and China. It was originally named Ichthyosaurus atavus by Quenstedt in 1852, and later reassigned to Mixosaurus. It was recognised as a separate genus by Maisch and Matzke in 1998, though other researchers have classified it as a species of Phalarodon instead.
Californosaurus is an extinct genus of ichthyosaur, an extinct marine reptile, from the Lower Hosselkus Limestone of California, and also the Muschelkalk of Germany.
Shastasaurus is an extinct genus of ichthyosaur from the middle and late Triassic. Specimens have been found in the United States, Canada, and China.
Leptonectes is a genus of ichthyosaur that lived in the Late Triassic to Early Jurassic. Fossils have been found in Belgium, Germany, Switzerland, Spain and the United Kingdom. The type species, L. tenuirostris, reached 4 metres (13 ft) long, while L. moorei reached 3 metres (9.8 ft) long; the largest species, L. solei, was approximately 5–6 metres (16–20 ft) long.
Callawayia is an extinct genus of ichthyosaur. It contains the species Callawayia neoscapularis.
Guizhouichthyosaurus is an extinct genus of ichthyosaur which is known primarily from the Xiaowa Formation of the lower Carnian stage of the Late Triassic in southwest China. The type species of this genus is Guizhouichthyosaurus tangae, of which multiple skeletons are known. It has been reassigned as a species of the genus Shastasaurus in the past, though it has since been considered distinct. The ichthyosaurs Cymbospondylus asiaticus, named in 2002, and Panjiangsaurus epicharis, named in 2003, are junior synonyms of G. tangae. The genus is also known from the Ladinian-aged Middle Triassic Zhuganpo Formation; additionally, the species "Callawayia" wollongangense may belong to Guizhouichthyosaurus.
Phalarodon is an extinct genus of mixosaurid ichthyosaur known from the Middle Triassic. Its name is derived from the Greek φάλαρα (phálara) and odon ("tooth"). The genus has had a tumultuous history since its classification in 1910, with different workers describing species under different genera or declaring the genus to be a nomen dubium. Currently three species are recognized, but more have been identified in the past.
Qianichthyosaurus is an extinct genus of ichthyosaur from the Ladinian and Carnian stages of the Late Triassic epoch. Its fossils have been found in southeastern China, in Carnian rocks of the Falang Formation near Huangtutang, Guizhou. The type species is Qianichthyosaurus zhoui, named by Chun Li in 1999. A second species, Qianichthyosaurus xingyiensis, was named from older (Ladinian) deposits in the Falang Formation in 2013 by Pengfei Yang and colleagues. Complete Qianichthyosaurus fossils are common in the Xiaowa Formation, with both juveniles and pregnant specimens being known; its larger contemporaries, Guizhouichthyosaurus and Guanlingsaurus, are rarer.
Thaisaurus is an extinct genus of ichthyopterygian marine reptile that lived during the Spathian. Fossils have been found in Thailand.
Barracudasauroides is a genus of mixosaurid ichthyosaur which lived during the Middle Triassic. Fossils of this genus have been found in Guizhou Province, China. It is known from GMPKU-P-1033, a partial skeleton recovered from the Upper Member of the Guanling Formation of Yangjuan village, Xinmin area; this rock unit dates to the Pelsonian substage of the Anisian stage. It was named by Michael W. Maisch in 2010, and the type species is Barracudasauroides panxianensis.
Mixosauridae was an early group of ichthyosaurs, living between 247.2 and 235 million years ago, during the Triassic period. Fossils of mixosaurs have been found all over the world: China, Timor, Indonesia, Italy, Germany, Spitsbergen, Switzerland, Svalbard, Canada, Alaska, and Nevada.
Guanlingsaurus is an extinct genus of shastasaurid ichthyosaur from the Late Triassic of China. It grew up to 8.3 metres (27 ft) in length and has a wide, triangular skull with a short and toothless snout.
Cymbospondylidae is an extinct family of Hueneosaurian Ichthyosaurs known from the Middle Triassic of Europe, North America, and Asia.
Parvipelvia is an extinct clade of euichthyosaur ichthyosaurs that existed from the Late Triassic to the early Late Cretaceous of Asia, Australia, Europe, North America and South America. Named by Ryosuke Motani, in 1999, it contains the basal taxa like Macgowania and Hudsonelpidia. Maisch and Matzke (2000) found in their analysis seven synapomorphies that support Parvipelvia. They also found 10 synapomorphies that support the existence of post-Triassic clade of ichthyosaurs, for which the name Neoichthyosauria was found to be available. Parvipelvians were the only ichthyosaurs to survive the Triassic-Jurassic extinction event.
Xinminosaurus is an extinct genus of cymbospondylid ichthyosaur known from the Middle Triassic of Guizhou Province, China.
Quasianosteosaurus is an extinct genus of basal ichthyosaur known from the late Early Triassic of Spitsbergen of the Svalbard archipelago, Norway. It was first named by Michael W. Maisch and Andreas T. Matzke in 2003 and the type species is Quasianosteosaurus vikinghoegdai. The generic name is derived from Latin quasi, "almost", and Greek anosteos, "boneless" and sauros, "lizard", regarding the preservation of the holotype which is almost exclusively a natural cast of the skull with very little original bone. The specific name is derived from Vikinghøgda, "Mount Viking", where the holotype was found. Quasianosteosaurus is known only from the holotype MNHN Nr. SVT 331, a partial three-dimensionally preserved skull consisting of the snout and orbital and postorbital regions. The skull is by far the largest Early Triassic ichthyosaur skull known, with an estimated cranial length of 50 cm (20 in). It was collected from the lowermost Grippia Niveau of the Sticky Keep Formation, Sassendalen Group at Mount Viking, Sassendalen. A phylogenetic analysis performed by Maisch & Matzke (2003) found it to be a basal ichthyosaur, sister taxon to Hueneosauria.
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