Hispanopedia Wiki
Articulo de referencia

Plesiocetus

~{{fossil range|7|1.806}}"},"image":{"wt":""},"image_caption":{"wt":""},"taxon":{"wt":"Plesiocetus"},"authority":{"wt":"Van Beneden 1859"},"subdivision_ranks":{"wt":"[[Species]]...

Hispanopedia WikiContenido en espanolLectura gratuita

Plesiocetus is a genus of extinct rorquals found worldwide. It has had a chequered taxonomic history, having served as a wastebasket genus for a handful of mysticete species.

Taxonomy

The genus Plesiocetus was originally coined for three mysticete species from Neogene marine deposits in the vicinity of Antwerp, Belgium: P. garopii, P. hupschii, and P. burtinii.[1]

The three originally included species of Plesiocetus went about their separate ways. P. garopii was designated the type species of the genus, while the other two were referred to Cetotherium.[2](P. hupschii and P. burtinii were later assigned to Plesiocetopsis, which was originally erected as a subgenus of Cetotherium[3]) Later, van Beneden noted the similarities of Plesiocetus with the fin whale, so he renamed Plesiocetus garopii into Balaenoptera musculoides, which is invalid under current ICZN rules. At the same time, he also erected the new species P. brialmontii on the basis of fragmentary remains, while referring Cetotherium dubius to Plesiocetus.

The taxonomy of Plesiocetus by now was confused. Plesiocetus garopii was referred to Balaenoptera (making Plesiocetus a synonym of Balaenoptera), while P. hupschii and P. burtinii were assigned to Cetotherium.[4][5] To avoid nomenclatorial complications, Plesiocetus hupschii was designated the type species of Plesiocetopsis, removing any synonymy between Plesiocetus and Plesiocetopsis.[6] Recent studies, however, indicate that Plesiocetus shares no characters with Balaenoptera to the exclusion of other balaenopterids.[7][8] For its part, P. burtinii was referred to Aglaocetus, while P. brialmontii was declared a nomen dubium.[8] These revisions left P. garopii the type and only species of Plesiocetus.

In 2021, a thorough review of Plesiocetus by Bisconti and Bosselaers led its authors to the conclusion that "Plesiocetus is a nomen dubium and must be abandoned by mysticete taxonomists".[9]

Distribution

Fossils of Plesiocetus have been found in:[10]

Neogene
Quaternary

References

  1. ↑Van Beneden, P.-J. 1859. Sur la découverte d’ossements fossiles faite à Saint-Nicolas. Bulletin de l’Academie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique, Series 2, 8: 123–146.
  2. ↑Van Beneden, P.-J. 1872. Les baleines fossiles d’Anvers. Bulletin de l’Academie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique, Series 2, 40: 736–758.
  3. ↑Brandt, J. F. 1873. Untersuchungen über die fossilen und subfossilen cetaceen Europa's. Mémoires de l’Académie Impériale des Sciences de St.-Pétersbourg, Series 7, 20(1): 1–372.
  4. ↑ Deméré, T. 1986. La ballena fósil, Balaenoptera davidsonii (Cope 1872), con una revisión de otras especies neógenas de Balaenoptera (Cetacea: Mysticeti). Marine Mammal Science, 2: 277–298.
  5. ↑ Lydekker, R. 1887. Catálogo de los mamíferos fósiles en el Museo Británico (Historia Natural), Vol. 5, 1–345. Londres: Museo Británico (Historia Natural).
  6. ↑ Kellogg, R. 1931. Mamíferos pelágicos de la Formación Temblor de la región del río Kern, California. Actas de la Academia de Ciencias de California, 19(12): 217–397.
  7. ↑ Deméré, T., Berta, A. y McGoven, MR 2005. La historia taxonómica y evolutiva de los misticetos balaenopteroides fósiles y modernos. Journal of Mammalian Evolution, 12: 99–143.
  8. 1 2 Steeman, ME (marzo de 2010). "La fauna de ballenas barbadas extintas del Mioceno-Plioceno de Bélgica y los huesos del oído de cetáceos diagnósticos". Journal of Systematic Palaeontology 8 (1): 63–80. doi:10.1080/14772011003594961.
  9. ^ Bisconti, M.; Bosselaers, M. (2021). "Sobre Plesiocetus Van Beneden, 1859 (Mammalia, Cetacea, Mysticeti)" . Rivista Italiana di Paleontologia e Stratigrafia . 127 (2): 231– 274. doi : 10.13130/2039-4942/15745 .
  10. ↑ Plesiocetus en Fossilworks.org​
Obtenido de " https://en.wikipedia.org/w/index.php?title=Plesiocetus&oldid=1258135646 "