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Pantosaurus striatus

Reptilia - Plesiosauria - Cryptoclididae

Taxonomy
Parasaurus striatus was named by Marsh (1891). Its type specimen is YPM 543, a partial skeleton, and it is a 3D body fossil. Its type locality is Near Freezeout Mountain(s) [PROXY], which is in an Oxfordian marine horizon in the Sundance Formation of Wyoming. It is the type species of Parasaurus.

It was recombined as Pantosaurus striatus by Marsh (1895), Marsh (1897), Hay (1902), Williston (1903), Hay (1930), O'Keefe and Wahl (2003), Wilhelm and O'Keefe (2010).

Synonyms
  • Muraenosaurus reedii was named by Mehl (1912). Its type specimen is UW 5544, a partial skeleton (Incomplete right coracaoid, partial left coracoid, parts of right and left pubes and ischia, muliple caudal and dorsal vertebrae, several ventral ribs, near-com), and it is a 3D body fossil. Its type locality is Near Freezeout Mountain(s) [PROXY], which is in an Oxfordian marine horizon in the Sundance Formation of Wyoming.

    It was synonymized subjectively with Pantosaurus striatus by O'Keefe and Wahl (2003).
Synonymy list
YearName and author
1895Pantosaurus striatus Marsh p. 338
1897Pantosaurus striatus Marsh p. 485
1902Pantosaurus striatus Hay p. 456
1903Pantosaurus striatus Williston p. 12
1912Muraenosaurus reedii Mehl p. 344 figs. 1, 3
1930Muraenosaurus reedii Hay p. 120
1930Pantosaurus striatus Hay p. 121
2003Pantosaurus striatus O'Keefe and Wahl pp. 37-38
2010Pantosaurus striatus Wilhelm and O'Keefe figs. 2-8

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
RankNameAuthor
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
suborderSauropterygia
orderPlesiosauriade Blainville 1835
superfamilyPlesiosauroideaWelles 1943
familyCryptoclididaeWilliston 1925
genusPantosaurusMarsh 1893
speciesstriatus()

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

†Pantosaurus striatus Marsh 1891
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Invalid names: Muraenosaurus reedii Mehl 1912 [synonym]
Diagnosis
ReferenceDiagnosis
B. C. Wilhelm and F. R. O'Keefe 2010"A small cryptocleidoid plesiosaur possessing 35–40 cervical vertebrae. The cervical vertebrae are almost as long as they are wide, are waisted, and carry an elongate cervical rib articulation on a pedestal. Foramina subcentralia are small and placed closely together and the articular faces of the centra have well-ossified rims. Anterior neural spines are low, blade-like, and angled backward. Humerus with long, narrow shaft, radial articulation much longer than ulnar articulation; possessing an articulation for one supernumerary ossification in the epipodial row. Radius much longer and broader than ulna."
Measurements
No measurements are available
Composition: hydroxyapatiteo
Environment: marineo
Locomotion: actively mobileo
Life habit: aquatico
Depth habitat: surfaceo
Diet: carnivoreo
Reproduction: viviparouso
Created: 2009-07-20 06:05:48
Modified: 2011-08-12 01:58:15
Source: o = order
Reference: Kiessling 2004

Age range: base of the Early/Lower Oxfordian to the top of the Oxfordian or 161.20000 to 157.30000 Ma

Collections (5 total)


Time interval Ma Country or state Original ID and collection number
Oxfordian163.5 - 157.3USA (Wyoming) Pantosaurus striatus (96679 103921 119281) Pantosaurus striatus, Muraenosaurus reedii (type locality: 119282)
Early/Lower Oxfordian161.2 - 155.7USA (Wyoming) Pantosaurus striatus (96690)