| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Keenocardium was named as a genus. It is extant.
It was reranked as Clinocardium (Keenocardium) by Coan et al. (2000), Moore (2003).
It was assigned to Veneroida by Sepkoski (2002); and to Clinocardium by Coan et al. (2000), Moore (2003).
It was reranked as Clinocardium (Keenocardium) by Coan et al. (2000), Moore (2003).
It was assigned to Veneroida by Sepkoski (2002); and to Clinocardium by Coan et al. (2000), Moore (2003).
Subtaxa
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2000 | Clinocardium (Keenocardium) Coan et al. p. 353 |
| 2002 | Keenocardium Sepkoski |
| 2003 | Clinocardium (Keenocardium) Moore |
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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.
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Clinocardium (Keenocardium) blandum Gould 1851
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Invalid names: Cardium (Cerastoderma) fucanum Dall 1907 [synonym]
Clinocardium (Keenocardium) californiense Deshayes 1839
†Clinocardium (Keenocardium) lispum Roth and Talmadge 1975
†Keenocardium starobogatovi Kafanov and Savizky 1982
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Todd 2001, Aberhan et al. 2004 | |||||
Age range
Maximum range based only on fossils: base of the Early/Lower Oligocene to the top of the Late/Upper Pleistocene or 33.90000 to 0.01170 Ma
Minimum age of oldest fossil (stem group age): 27.3 Ma
Minimum age of oldest fossil (stem group age): 27.3 Ma
Collections (22 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Oligocene | Russian Federation | Keenocardium raricostulatum (70463) Keenocardium starobogatovi (70445 70518) | |
| Aquitanian - Burdigalian | Russian Federation | Keenocardium etereticum, Keenocardium ogasawarai, Keenocardium ornatocostatum (50172) Keenocardium kuluvense, Keenocardium menneri (50041) Keenocardium ogasawarai (50050) | |
| Early/Lower Miocene | Russian Federation | Keenocardium californense (70448) | |
| Langhian - Serravallian | Russian Federation | Keenocardium chejsliense, Keenocardium kakertense (50038) Keenocardium kljutschiense (50120) | |
| Middle Miocene | Russian Federation | Keenocardium matschiense, Keenocardium californiense (70562) | |
| Tortonian | Russian Federation | Keenocardium matschiense (49978) | |
| Late/Upper Miocene | Russian Federation | Keenocardium californiense (70444 70479) | |
| Tortonian - Messinian | Russian Federation | Keenocardium matschiense (49977) | |
| Zanclean | Japan (Aomori) | Clinocardium californiense (55849) | |
| Pliocene | Russian Federation | Keenocardium californiense (49976 70471) | |
| Late/Upper Pliocene | Japan (Fukushima) | Clinocardium californiense (62295) | |
| Piacenzian | Japan (Niigata) | Clinocardium californiense (101021) | |
| Middle Pleistocene | USA (California) | Cardium californiense (222995) | |
| Late/Upper Pleistocene | USA (Alaska) | Laevicardium californiense (41301 41302) |