Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Arca (Scapharca) mediaimpressa was named by Clark (1918). Its type specimen is UCMP 11174 and is a 3D body fossil. Its type locality is UCMP loc. 1131, Walnut Creek, which is in an Oligocene marine horizon in California.
It was recombined as Anadara (Anadara) mediaimpressa by Reinhart (1943), Moore (1983).
It was recombined as Anadara (Anadara) mediaimpressa by Reinhart (1943), Moore (1983).
Sister species lacking formal opinion data
A. burnesi, A. chilensis, A. clathrata, A. dameyi, A. delandensis, A. hypomela, A. improcera, A. larkini, A. natalensis, A. philippiana, A. rectangularis, A. setoensis, A. tarponensis, A. turoniensis, A. watanabei, A. mompiche, A. microtera, A. kogachiensis, A. chavezi, A. guajirensis, A. suzukii, A. tectumcolumbae, A. veatchi, Arca montensis
Synonymy list
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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.
†Anadara (Anadara) mediaimpressa Clark 1918
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: g = genus, f = family | |||||
References: Sanchez Roig 1926, Mikkelsen and Bieler 2008 |
Age range
Maximum range based only on fossils: Late/Upper Oligocene or 27.30000 to 23.04000 Ma
Minimum age of oldest fossil (stem group age): 23.04 Ma
Minimum age of oldest fossil (stem group age): 23.04 Ma
Collections (2 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Chattian | Mexico (Baja California Sur) | Arca mediaimpressa (43805) | |
Late/Upper Oligocene | USA (California) | Arca mediaimpressa (122273) |