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Mytilus (Crenomytilus) expansus

Bivalvia - Mytilida - Mytilidae

Taxonomy
Mytilus mathewsonii expansus was named by Arnold (1907) [DISTRIBUTION: Late Oligocene; Pacific Coast, North America.]. Its type specimen is USNM 164968, a shell, and it is a 3D body fossil.

It was recombined as Mytilus expansus by Loel and Corey (1932); it was recombined as Crenomytilus expansus by Addicott (1973) and Schoellhamer et al. (1981); it was recombined as Mytilus (Crenomytilus) expansus by Moore (1983).

Synonymy list
YearName and author
1907Mytilus mathewsonii expansus Arnold p. 528 figs. pl. 43, fig. 2
1932Mytilus expansus Loel and Corey p. 205 figs. Plate 34, figure 1
1973Crenomytilus expansus Addicott p. 24
1981Crenomytilus expansus Schoellhamer et al. p. D92
1983Mytilus (Crenomytilus) expansus Moore p. A63 figs. Plate 15, figure 5

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
Eubivalvia
subclassAutobranchia(Groblen 1894)
RankNameAuthor
infraclassPteriomorphia(Beurlen 1944)
MytilomorphiFerussac 1822
orderMytilida(Rafinesque 1815)
superfamilyMytiloideaRafinesque 1815
familyMytilidaeRafinesque 1815
subfamilyMytilinaeRafinesque 1815
genusMytilusLinnaeus 1758
subgenusCrenomytilus(Soot-Ryen 1955)
speciesexpansus()

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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Diagnosis
No diagnoses are available