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Opalia (Opalia)
Taxonomy
Opalia (Opalia) was named by Adams and Adams (1858). It is extant.
It was assigned to Opalia by Adams and Adams (1858), Durham (1937) and Durham (1944).
It was assigned to Opalia by Adams and Adams (1858), Durham (1937) and Durham (1944).
Species lacking formal opinion data
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.
Subg. Opalia (Opalia) Adams and Adams 1858
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†Opalia (Opalia) bravinderi Durham 1937
†Opalia (Opalia) rugiferum Dall 1909
†Opalia (Opalia) wishkahensis Durham 1937
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. W. Durham 1937 | Shell moderate or large; rather heavy; sutures shallow; body whorl with promi-
nent basal disk and keel; only very fine spiral striations present; aperture ovate, anterior auricle present; outer lip thick, inner lip thin. Living in Arctic and Antarctic oceans, ranging into sub- tropical conditions in 53 fathoms (San Diego, Calif., Dall, 1917). |