PBDB Taxon

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

Laevicardium tristiculum

Bivalvia - Cardiida - Cardiidae

Taxonomy

Cardium tristiculum was named by Yokoyama (1924) [DISTRIBUTION: Cenozoic; North Pacific.]. It is not a trace fossil.

It was recombined as Laevicardium tristiculum by Kafanov et al. (2001).

Synonyms

Laevicardium esutoruensis was named by Krishtofovich (1957) [DISTRIBUTION: Cenozoic; North Pacific.]. It is not a trace fossil.

It was recombined as Cardium esutoruensis by Gladenkov et al. (1988); it was synonymized subjectively with Laevicardium tristiculum by Kafanov et al. (2001).

Synonymy list

Year	Name and author
1924	Cardium tristiculum Yokoyama
1957	Laevicardium esutoruensis Krishtofovich
1988	Cardium esutoruensis Gladenkov et al.
2001	Laevicardium tristiculum Kafanov et al. p. 41

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia
superphylum	Lophotrochozoa
phylum	Mollusca
class	Bivalvia
—	Eubivalvia
subclass	Autobranchia	(Groblen 1894)
infraclass	Heteroconchia	(Gray 1854)
—	Cardiomorphi	Ferussac 1822

Rank	Name	Author
—	Cardioni	Ferussac 1822
—	Cardiidia	Ferussac 1822
—	Cardiata	Ferussac 1822
superorder	Cardiiformii	Ferussac 1822
order	Cardiida	Ferussac 1822
suborder	Cardiidina	Ferussac 1822
—	Cardioidei	Ferussac 1822
superfamily	Cardioidea	(Lamarck 1809)
family	Cardiidae	Lamarck 1809
subfamily	Laevicardiinae	Keen 1936
genus	Laevicardium	Swainson 1840
species	tristiculum	(Yokoyama 1924)

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.

†Laevicardium tristiculum Yokoyama 1924

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Invalid names: Laevicardium esutoruensis Krishtofovich 1957 [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

aragonitec

Locomotion:

facultatively mobileg

Life habit:

infaunalg

Diet:

suspension feederg

Vision:

blindc

Created:

2009-09-09 07:20:06

Modified:

2009-09-09 09:20:06

Source: g = genus, c = class

References: Todd 2001, Aberhan et al. 2004, Sanchez Roig 1926

Age range: base of the Early/Lower Oligocene to the top of the Early/Lower Miocene or 33.90000 to 15.98000 Ma

Collections (4 total)

Time interval	Ma	Country or state	Original ID and collection number
Early/Lower Oligocene	33.9 - 27.3	Russian Federation	Laevicardium tristiculum (70445)
Late/Upper Oligocene	27.3 - 23.04	Russian Federation	Laevicardium tristiculum (70475)
Early/Lower Miocene	23.04 - 15.98	Russian Federation	Cardium esutoruensis (45443 45444)