Английская Википедия:Augustasaurus
Шаблон:Short description Шаблон:Automatic taxobox
Augustasaurus is a genus of aquatic sauropterygian reptile belonging to the Pistosauria, a clade containing plesiosaurs and their close relatives. Pistosaurus and Augustasaurus were thought to be the only known members of the family Pistosauridae.[1] However, some recent cladistic analyses found Augustasaurus to be a more advanced pistosaur, as a sister group of the order Plesiosauria.[2][3] The only known species of Augustasaurus is Augustasaurus hagdorni, which was first described in 1997.
Etymology
The first part of Augustasaurus' name comes from the Augusta Mountains of northwestern Nevada,[4] USA, where its fossil bones were first discovered.[1] The second part of the name is the Greek word Шаблон:Lang (Шаблон:Lang), which means "lizard" or "reptile."[4] The type species, Augustasaurus hagdorni, was named in honor of the paleontologist Hans Hagdorn.[4]
Description
Augustasaurus measured Шаблон:Cvt long and weighed Шаблон:Cvt.[5][6] Its skull shares many general characteristics with its relative, Pistosaurus, such as tall, blade-like upper temporal arches.[1] The skull's elongated rostrum tapers to a dull point, the anterior premaxillary and maxillary teeth have been described as "fang-like",[1] and the squamosal makes a box-like suspensorium.[1]
The dorsal neural spines of Augustasaurus are low with rugose tops.[7] Its coracoids are large plates similar to those in other plesiosaurs.[8] However, the coracoid foramen are missing from Agustasaurus, in a way similar to those in the pistosauroid Corosaurus.[8] Its cervical ribs have anterior process,[9] and like most plesiosaurs, Augustasaurus' vertebrae have "thickened transverse processes".[9]
Distribution
Augustasaurus is known from the Augusta Mountains of northwestern Nevada (United States). The holotype specimen was found in the Favret Formation, which dates from the mid-Triassic period, of Pershing County, Nevada.[10]
See also
References
External links
- https://web.archive.org/web/20081120014242/http://www.vertpaleo.org/publications/jvp/22-577-592.cfm
- https://web.archive.org/web/20071210085257/http://www.plesiosaur.com/database/genusIndividual.php?i=32
- https://web.archive.org/web/20081005203917/http://www.palaeos.com/Vertebrates/Units/220Lepidosauromorpha/220.400.html
Шаблон:Sauropterygia Шаблон:Taxonbar
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- ↑ Перейти обратно: 1,0 1,1 1,2 1,3 1,4 Journal of Vertebrate Paleontology. Article: pp. 577–592. THE SKULL OF THE PISTOSAUR AUGUSTASAURUS FROM THE MIDDLE TRIASSIC OF NORTHWESTERN NEVADA. OLIVIER RIEPPEL, P. MARTIN SANDER, and GLENN W. STORRS. 1997
- ↑ Шаблон:Cite journal
- ↑ Шаблон:Cite journal
- ↑ Перейти обратно: 4,0 4,1 4,2 Шаблон:Cite web
- ↑ Шаблон:Cite journal
- ↑ Шаблон:Cite journal
- ↑ O’Keefe. Pg.52
- ↑ Перейти обратно: 8,0 8,1 O'Keefe Pg. 5
- ↑ Перейти обратно: 9,0 9,1 O'Keefe. Pg. 51
- ↑ O'Keefe Pg.9
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