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Microcnemus efremovi

Reptilia - Protorosauria - Protorosauridae

Taxonomy
Microcnemus efremovi was named by Huene (1940). Its type specimen is PIN 2252/387 (lectotype, designated by Ivakhnenko et al., 1997), a limb element (right femur), and it is a 3D body fossil. Its type locality is Vakhnevo locality, which is in an Olenekian fluvial sandstone in the Russian Federation. It is the type species of Microcnemus.

Synonyms
  • Chasmatosuchus parvus was named by Huene (1940). Its type specimen is PIN 2252/382, a set of vertebrae (single anterior trunk vertebra), and it is a 3D body fossil. Its type locality is Vakhnevo locality, which is in an Olenekian fluvial sandstone in the Russian Federation.

    It was synonymized subjectively with Chasmatosuchus rossicus by Tatarinov (1961); it was synonymized subjectively with Microcnemus efremovi by Sennikov (2008).
Synonymy list
YearName and author
1940Microcnemus efremovi Huene p. 2 figs. 1-3; Pls I-III
1940Chasmatosuchus parvus Huene p. 12 figs. 7 Pl. IV
1976Chasmatosuchus parvus Charig and Sues p. 27

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Eugnathostomata
—Teleostomi(Bonaparte 1836)
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
RankNameAuthor
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
orderProtorosauriaHuxley 1871
familyProtorosauridae
genusMicrocnemus
speciesefremovi

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.

†Microcnemus efremovi Huene 1940
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Invalid names: Chasmatosuchus parvus Huene 1940 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilep
Life habit: ground dwellingo
Diet: carnivoreo
Created: 2011-03-27 21:49:37
Modified: 2011-03-27 05:49:37
Source: o = order, subc = subclass, subp = subphylum, p = phylum
References: Kiessling 2004, Carroll 1988, Renesto 2005

Age range: Olenekian or 249.90000 to 246.70000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Olenekian249.9 - 246.7Russian Federation (Vologda) Microcnemus efremovi (93775) Microcnemus efremovi, Chasmatosuchus parvus (type locality: 28479)