PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Biarmosuchus

Taxonomy

Biarmosuchus was named by Chudinov (1960). It is not extant.

It was assigned to Biarmosuchidae by Carroll (1988), Sigogneau-Russell (1989) and Battail and Surkov (2000); to Eotitanosuchidae by Ivakhnenko (2003); and to Biarmosuchia by Rubidge et al. (2006) and Sidor and Rubidge (2006).

Species

B. tchudinovi, B. tener (syn. Ivantosaurus ensifer, Ivantosaurus signifer, Biarmosaurus antecessor, B. antecessor), Eotitanosuchus olsoni

Synonyms

Biarmosaurus was named by Chudinov (1960). It is not extant. Its type is Biarmosaurus antecessor.

It was synonymized subjectively with Biarmosuchus by Sigogneau-Russell (1989), Battail and Surkov (2000) and Ivakhnenko (2003).
Eotitanosuchus was named by Tchudinov (1960). It is not extant.

It was synonymized subjectively with Biarmosuchus by Ivakhnenko (2003).

It was assigned to Phthinosuchidae by Olson (1962); and to Eotitanosuchidae by Carroll (1988) and Battail and Surkov (2000).
Ivantosaurus was named by Chudinov (1983).

It was synonymized subjectively with Biarmosuchus by Ivakhnenko (2003).

It was assigned to Eotitanosuchidae by Chudinov (1983), Carroll (1988) and Battail and Surkov (2000).

Synonymy list

Year	Name and author
1960	Biarmosaurus Chudinov
1960	Biarmosuchus Chudinov
1960	Eotitanosuchus Tchudinov
1962	Eotitanosuchus Olson pp. 49, 95 figs. 19, Pl. 12
1983	Ivantosaurus Chudinov p. 66
1988	Biarmosuchus Carroll
1988	Eotitanosuchus Carroll
1988	Ivantosaurus Carroll
1989	Biarmosuchus Sigogneau-Russell
2000	Biarmosuchus Battail and Surkov
2000	Eotitanosuchus Battail and Surkov p. 91
2000	Ivantosaurus Battail and Surkov p. 91
2003	Biarmosuchus Ivakhnenko
2006	Biarmosuchus Rubidge et al.
2006	Biarmosuchus Sidor and Rubidge

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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	()

Rank	Name	Author
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
subclass	Synapsida
—	Therapsida	()
infraorder	Biarmosuchia
genus	Biarmosuchus	Chudinov 1960

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.

G. †Biarmosuchus Chudinov 1960

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†Biarmosuchus tchudinovi Ivakhnenko 1999

†Biarmosuchus tener Chudinov 1960

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Invalid names: Biarmosaurus antecessor Chudinov 1960 [synonym], Biarmosuchus antecessor Tchudinov 1960 [synonym], Ivantosaurus ensifer Chudinov 1983 [synonym], Ivantosaurus signifer Tatarinov 1974 [synonym]

Invalid names: Biarmosaurus Chudinov 1960 [synonym], Eotitanosuchus Tchudinov 1960 [synonym], Ivantosaurus Chudinov 1983 [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

terrestrialuc

Locomotion:

actively mobilec

Created:

2017-04-17 15:15:35

Modified:

2017-04-17 15:15:35

Source: c = class, subp = subphylum, uc = unranked clade

References: Hendy et al. 2009, Carroll 1988

Age range: base of the Ufimian to the top of the Urzhumian or 279.50000 to 264.28000 Ma

Collections (3 total)

Time interval	Ma	Country or state	Original ID and collection number
Ufimian - Late/Upper Kazanian	279.5 - 268.0	Russian Federation (Komi Republic)	B. sp. (180620)
Urzhumian	266.9 - 264.28	Russian Federation (Perm)	Ivantosaurus ensifer, Eotitanosuchus olsoni, B. tener, Biarmosaurus antecessor (87102)
Urzhumian	266.9 - 264.28	Russian Federation (Udmurtia)	B. tchudinovi (187652)