Concavus
| Concavus Temporal range:
| |
|---|---|
| File:Balanidae - Concavus concavus.JPG | |
| Fossil of Concavus concavus | |
| Scientific classification Edit this classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Thecostraca |
| Subclass: | Cirripedia |
| Order: | Balanomorpha |
| Family: | Balanidae |
| Subfamily: | Concavinae |
| Genus: | Concavus Newman, 1982[3][4] |
| Type species | |
| †Balanus concavus Bronn, 1831[a]
| |
Concavus is a genus of barnacles.[4]
Species
[edit | edit source]As of 2021[update], WoRMS recognizes the following two species:[4]
- †Concavus concavus (Bronn, 1831)[5][a] — Pliocene–early Pleistocene; Western Europe.[1]
- †Concavus crassostricola Zullo, 1984[6] — Early Miocene; North Carolina and northern Florida.[1]
Taxonomic history
[edit | edit source]The genus was circumscribed by William A. Newman in 1982. His original list of subgenera and species for the genus was the following:[3]
- Concavus Newman, 1982 genus
- Concavus Newman, 1982 subgenus
- †C. concavus (Bronn, 1831)
- Menesiniella Newman, 1982 subgenus
- C. (M.) aquila Pilsbry, 1916
- C. (M.) regalis Pilsbry, 1916
- Arossia Newman, 1982 subgenus
- C. (A.) panamensis (Rogers, 1948)
- C. (A.) p. panamensis (Rogers, 1948)
- C. (A.) p. eyerdami (Henry, 1960)
- C. (A.) henryae Newman, 1982
- C. (A.) panamensis (Rogers, 1948)
- Concavus Newman, 1982 subgenus
Newman noted there were multiple fossil taxa in this genus, but didn't classify any except for the type species †C. concavus.[3]
In 1992, Victor A. Zullo revised the genus. He created a new subfamily, Concavinae, with Tamiosoma Conrad, 1856 (the senior synonym of Menesiniella according to Zullo[b]), Arossia and Concavus among its genera. With his revision, Concavus only consists of the two species C. concavus and C. crassostricola.[1]
Fossil records
[edit | edit source]This genus is known in the fossil records from the Oligocene to the Quaternary (age range: from 28.4 to 0.012 million years ago). Fossils are found in the marine strata of United States, Italy, Mexico, Morocco, Algeria, France, Haiti, Madagascar, Panama, Colombia and Slovenia.[7]
Notes
[edit | edit source]References
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