PBDB Taxon

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

Cleiothyridina bajkurica

Rhynchonellata - Athyridida - Athyrididae

Taxonomy

Composita bajkurica was named by Chernyak (1963). It is a 3D body fossil. Its type locality is Snezhna River, Outcrop 83, Bed 13, Taimyr Lake, which is in a Wordian marine siliciclastic in the Baikur Formation of the Russian Federation.

It was recombined as Cleiothyridina bajkurica by Grunt (1977) and Pavlova et al. (1991).

Sister species lacking formal opinion data

C. angelicoides, C. coloradoensis, C. crassicardinalis, C. deroissii, C. elegans, C. fimbriata, C. glabristria, C. humerosa, C. incrassata, C. media, C. pecossi, C. segmentata, C. squamosa, C. transversa

Synonymy list

Year	Name and author
1963	Composita bajkurica Chernyak p. 121 figs. Pl 46, figs 1,2
1977	Cleiothyridina bajkurica Grunt p. 79 figs. Pl 13, figs 1-6; text-figs 24-28
1991	Cleiothyridina bajkurica Pavlova et al. p. 139 figs. Pl 32, figs 7,8

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia
superphylum	Lophotrochozoa
—	Lophophorata
—	Panbrachiopoda	Carlson and Cohen 2020
phylum	Brachiopoda	Cuvier 1805

Rank	Name	Author
subphylum	Rhynchonelliformea	Williams et al. 1996
class	Rhynchonellata	Williams et al. 1996
order	Athyridida	Boucot et al. 1964
suborder	Athyrididina	Boucot et al. 1964
superfamily	Athyridoidea	McCoy 1844
family	Athyrididae	McCoy 1841
subfamily	Cleiothyridininae
genus	Cleiothyridina	Buckman 1906
species	bajkurica	()

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.

†Cleiothyridina bajkurica Chernyak 1963

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Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

low Mg calcitep

Environment:

marineuc

Locomotion:

stationarysubo

Attached:

yesp

Life habit:

low-level epifaunalsubo

Diet:

suspension feedersubo

Vision:

blindc

Created:

2018-11-10 18:06:04

Modified:

2018-11-10 18:06:04

Source: subo = suborder, c = class, p = phylum, uc = unranked clade

References: Aberhan et al. 2004, Nesnidal et al. 2013

Age range: base of the Artinskian to the top of the Wordian or 290.10000 to 264.28000 Ma

Collections (7 total)

Time interval	Ma	Country or state	Original ID and collection number
Artinskian	290.1 - 279.3	Mongolia	Cleiothyridina bajkurica (116246 116247)
Kungurian	279.3 - 272.3	Russian Federation	Cleiothyridina bajkurica (225521)
Kungurian	279.3 - 272.3	Mongolia	Cleiothyridina bajkurica (116248 116251)
Wordian	266.9 - 264.28	Russian Federation	Composita bajkurica (type locality: 119316 119317)