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A forgotten cirripedological gem: a new species of whale barnacle of the genus Cetopirus from the Pleistocene of the United States West Coast
Collareta, A.; Bosselaers, M.; Holroyd, P.A.; Dineen, A. (2023). A forgotten cirripedological gem: a new species of whale barnacle of the genus Cetopirus from the Pleistocene of the United States West Coast. TRE 114(SI 1-2): 41-48. https://dx.doi.org/10.1017/S1755691022000214
In: Earth and Environmental Science Transactions of the Royal Society of Edinburgh. RSE Scotland Foundation: Edinburgh. ISSN 1755-6910; e-ISSN 1755-6929, meer
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| Trefwoorden |
Taxa > Species > New taxa > New species
Cetopirus polysyrinx; Cirripedia [WoRMS]; Coronulidae Leach, 1817 [WoRMS]
Marien/Kust |
| Author keywords |
California; Cetopirus polysyrinx sp. nov.; Chibanian; Cirripedia; Coronulidae; epibiosis; Oregon; taxonomy; Upper Pleistocene |
| Auteurs | | Top |
- Collareta, A.
- Bosselaers, M., meer
- Holroyd, P.A.
- Dineen, A.
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| Abstract |
A small lot of fossil whale barnacles from the Upper Pleistocene of California and the Middle Pleistocene (Chibanian) of Oregon (United States West Coast), described in a 1972 unpublished MA thesis, are formally described and illustrated herein. In that thesis, a new genus and species name were proposed; however, according to the International Code of Zoological Nomenclature, they have no taxonomic standing and are thus unavailable. Based on our reappraisal, two specimens in this lot belong to a new, extinct species that can be assigned to the purportedly extant genus Cetopirus. Cetopirus polysyrinx sp. nov. differs from congeners in that its secondary T-shaped flanges are multitubiferous internally, that is, they are perforated by a high number of irregularly-sized and irregularly-spaced tubules that result in a spongy aspect in transverse section. Whether or not this peculiar condition had any adaptive significance is difficult to determine. Considering that Cetopirus is currently known as an obligate epibiont of right whales (including the North Pacific form Eubalaena japonica (Lacépède 1818)), the host of C. polysyrinx sp. nov. was E. japonica or some other species of Eubalaena. The Plio-Pleistocene deposits of the Pacific coast of North America have yielded a rather idiosyncratic fossil whale barnacle fauna, inclusive of the genera Cetolepas, Cryptolepas and now Cetopirus, which seemingly contrasts with all other coeval assemblages worldwide, the latter being in turn dominated by Coronula spp. |
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