PBDB Taxon

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Muraenosaurus leedsii

Reptilia - Plesiosauria - Cryptoclididae

Taxonomy

Muraenosaurus leedsii was named by Seeley (1874). Its type specimen is BMNH R2421, a partial skeleton, and it is a 3D body fossil. Its type locality is Huntingdonshire marine reptiles, which is in a Callovian marine horizon in the Oxford Clay Formation of the United Kingdom. It is the type species of Muraenosaurus.

It was recombined as Plesiosaurus leedsi by Whidborne (1881); it was synonymized subjectively with Cimoliosaurus plicatus by Lydekker (1889); it was misspelled as Muraenosaurus leedsi by Andrews (1910), Hay (1930), Welles (1962), Brown (1981), O'Keefe (2001); it was corrected as Muraenosaurus leedsi by Gasparini et al. (2002).

Synonyms

Plesiosaurus plicatus was named by Phillips (1871). Its type specimen is OUMNH specimens, a set of vertebrae (two cervical, two anterior dorsal and two middle dorsal vertebrae), and it is a 3D body fossil. Its type locality is Summertown, Wolvercote (OUM) (unspecific horizon of the Oxford Clay Formation, which is in a Callovian marine claystone in the Oxford Clay Formation of the United Kingdom.

It was recombined as Muraenosaurus plicatus by Andrews (1895), Delair (1960); it was considered a nomen dubium by Andrews (1910); it was synonymized subjectively with Muraenosaurus leedsii by Brown (1981).
Cimoliosaurus durobrivensis was named by Lydekker (1889). Its type specimen is BMNH R.2428, a partial skeleton, and it is a 3D body fossil. Its type locality is Peterborough area, Leeds Collection, which is in a Callovian offshore mudstone in the Oxford Clay Formation of the United Kingdom.

It was recombined as Muraenosaurus durobrivensis by Andrews (1910); it was recombined as Tremamesacleis durobrivensis by White (1940) and White (1940); it was synonymized subjectively with Muraenosaurus leedsii by Brown (1981).
Muraenosaurus platyclis was named by Seeley (1892). Its type specimen is BMNH R2678, a skeleton, and it is a 3D body fossil. Its type locality is Peterborough area, Leeds Collection, which is in a Callovian offshore mudstone in the Oxford Clay Formation of the United Kingdom.

It was recombined as Tremamesacleis platycleis by White (1940); it was synonymized subjectively with Muraenosaurus leedsii by Brown (1981).
Cimoliosaurus plicatus was named by Phillips (1871) [A recombination of Plesiosaurus plicatus Phillips, 1871].

It was synonymized subjectively with Muraenosaurus leedsii by Brown (1981).

Synonymy list

Year	Name and author
1871	Cimoliosaurus plicatus Phillips p. 313
1871	Plesiosaurus plicatus Phillips pp. 313-314 figs. 68-69
1874	Muraenosaurus leedsii Seeley
1881	Plesiosaurus leedsi Whidborne p. 480
1888	Plesiosaurus plicatus Lydekker p. 351
1889	Cimoliosaurus durobrivensis Lydekker
1892	Muraenosaurus platyclis Seeley pp. 139-141 figs. 6, 7
1895	Muraenosaurus plicatus Andrews p. 429
1910	Muraenosaurus leedsi Andrews p. 120
1910	Muraenosaurus durobrivensis Andrews p. 127
1930	Muraenosaurus leedsii Hay p. 120
1940	Tremamesacleis durobrivensis White
1940	Tremamesacleis platycleis White p. 463
1960	Muraenosaurus plicatus Delair p. 60
1962	Muraenosaurus leedsii Welles p. 7
1981	Muraenosaurus leedsii Brown pp. 282-283
2001	Muraenosaurus leedsii O'Keefe p. 16
2002	Muraenosaurus leedsi Gasparini et al.

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria

Rank	Name	Author
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
—	Sauropsida
class	Reptilia
subclass	Eureptilia	()
—	Romeriida
—	Diapsida	()
suborder	Sauropterygia
order	Plesiosauria	de Blainville 1835
superfamily	Plesiosauroidea	Welles 1943
family	Cryptoclididae	Williston 1925
genus	Muraenosaurus
species	leedsii

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.

†Muraenosaurus leedsii Seeley 1874

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Invalid names: Cimoliosaurus plicatus Phillips 1871 [synonym], Muraenosaurus platyclis Seeley 1892 [synonym], Muraenosaurus plicatus Phillips 1871 [synonym], Tremamesacleis durobrivensis Lydekker 1889 [synonym]

Diagnosis

No diagnoses are available

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 Late/Upper Callovian to the top of the Callovian or 164.70000 to 163.50000 Ma

Collections (7 total)

Time interval	Ma	Country or state	Original ID and collection number
Callovian	166.1 - 163.5	United Kingdom (England)	Muraenosaurus leedsii (type locality: 119563) Plesiosaurus plicatus (140699)
Callovian - Oxfordian	166.1 - 157.3	United Kingdom (England)	Muraenosaurus plicatus (140700)
Late/Upper Callovian	164.7 - 161.2	France (Nord-Pas-de-Calais)	Muraenosaurus plicatus (144756)
Middle Callovian	164.7 - 161.2	United Kingdom (England)	Muraenosaurus leedsi (133067) Muraenosaurus leedsii (142299) Muraenosaurus leedsii, Muraenosaurus durobrivensis, Muraenosaurus platyclis (109800)