PBDB Taxon

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

Janaija

Bivalvia - Trigoniida - Trigonodidae

Taxonomy

Janaija was named by Truschelev (1984).

It was assigned to Trigonodidae by Kurushin (1992).

Species

J. magnoplicata, J. nikolaevi, J. praelonga, J. visibilis

Synonymy list

Year	Name and author
1984	Janaija Truschelev
1992	Janaija Kurushin p. 27

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia
superphylum	Lophotrochozoa
phylum	Mollusca
class	Bivalvia
—	Eubivalvia

Rank	Name	Author
subclass	Autobranchia	(Groblen 1894)
infraclass	Heteroconchia	(Gray 1854)
—	Uniomorphi	Gray 1854
—	Unioni	Gray 1854
—	Unionata	Gray 1854
order	Trigoniida	(Dall 1889)
superfamily	Trigonodoidea	Modell 1942
family	Trigonodidae	Modell 1942
genus	Janaija	Truschelev 1984

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. †Janaija Truschelev 1984

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†Janaija magnoplicata Kurushin 1987

†Janaija nikolaevi Kurushin 1987

†Janaija praelonga Kiparisova 1937

†Janaija visibilis Kurushin 1987

Diagnosis

No diagnoses are available

Measurements

part	N	mean	minimum	maximum	median	s.d.
valve height	11	12.0	2.24	22.9	12.5	6.50

Composition:

aragonitec

Locomotion:

facultatively mobileo

Life habit:

infaunalo

Diet:

suspension feedero

Vision:

blindc

Created:

2004-02-28 12:34:20

Modified:

2004-02-28 14:34:20

Source: o = order, c = class

Reference: Aberhan et al. 2004

Age range: base of the Illyrian to the top of the Longobardian or 243.33000 to 237.00000 Ma

Collections (20 total)

Time interval	Ma	Country or state	Original ID and collection number
Anisian	246.7 - 241.464	Russian Federation	J. praelonga (124665 124668 124670 124673 124674 124675) J. praelonga, J. nikolaevi (124667) J. visibilis (97064 124646)
Illyrian	243.33 - 241.464	Russian Federation	J. visibilis (97062 97063)
Ladinian	241.464 - 237.0	Russian Federation	J. praelonga (124561 124563)
Longobardian	239.48 - 237.0	Russian Federation	J. nikolaevi (97042 97045) J. nikolaevi, J. magnoplicata (44849) J. praelonga (44852 97054 97056) J. praelonga, J. nikolaevi (97037)