(Redirected from
Polymixiiformes)
| Beardfishes Temporal range:
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|---|---|
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| Stout Beardfish, (P. nobilis) | |
Scientific classification
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| (unranked): | Acanthomorpha |
| Order: | Polymixiiformes |
| Family: |
Polymixiidae Bleeker, 1859 |
| Type species | |
|
Polymixia nobilis
R. T. Lowe, 1838
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| Families | |
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| Synonyms | |
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The beardfishes consist of a single extant genus, Polymixia, of deep-sea marine ray-finned fish named for their pair of long hyoid barbels. They are classified in their own order Polymixiiformes /pɒliˈmɪksi.ɪfɔːrmiːz/. [1] But as Nelson says, "few groups have been shifted back and forth as frequently as this one, and they were recently added to Paracanthoptergii". [2] For instance, they have previously been classified as belonging to the Beryciformes. They are of little economic importance. [3]
They are found in tropical and subtropical waters of the Atlantic, Indian and western Pacific Ocean. They are bottom-dwelling fish, found down to about 800 m (2,600 ft) depth. Most are relatively small fish, although one species, Polymixia berndti, is over 40 cm (16 in) in length. [3]
The earliest fossils are from the Turonian of Canada, from the former Western Interior Seaway. [4]
Classification
- Order Polymixiiformes Rosen & Patterson, 1969
[5]
[6]
- Genus †
Cumbaaichthys Murray 2016
- † Cumbaaichthys oxyrhynchus Murray 2016
- Family †
Boreiohydriidae Murray & Cumbaa 2013
- Genus †
Boreiohydrias Murray & Cumbaa 2013
- † Boreiohydrias dayi Murray & Cumbaa 2013
- Genus †
Boreiohydrias Murray & Cumbaa 2013
- Family †
Digoriidae Bannikov 1985
- Genus †
Digoria Jordan 1923
- † Digoria ambigua Jordan 1923
- Genus †
Digoria Jordan 1923
- Family Polymixiidae Gill 1862 [Berycopsidae Regan 1911; Dalmatichthyidae Radovčić 1975; Omosomopsidae Gaudant 1978; Homonotichthyidae Whitley 1933]
- Genus † Apricenaichthys Taverne 2011
- Genus †
Berycopsia Radovčić 1975
- † Berycopsia inopinnata Radovčić 1975
- Genus †
Berycopsis Dixon 1850 [
Platycormus von der Marck 1900]
- † B. elegans Dixon 1850 [Platycormus elegans (Dixon 1850)
- † B. germana (Agassiz 1839) [Beryx germanus Agassiz 1839; Platycormus germanus (Agassiz 1839)
- † B. pulcher Bannikov & Bacchia 2004
- Genus †
Dalmatichthys Radovčić 1975
- † Dalmatichthys malezi Radovčić 1975
- Genus †
Homonotichthys Whitley 1933
- † H. dorsalis (Dixon 1850) [Homonotus dorsalis Dixon 1850
- † H. elegans (Dixon 1850) [Homonotus elegans Dixon 1850
- † H. rotundus (Woodward 1902) [Homonotus rotundus Woodward 1902
- Genus †
Magrebichthys Murray & Wilson 2014
- † Magrebichthys nelsoni Murray & Wilson 2014
- Genus †
Omosoma Costa 1857
- † O. garretti Bardack 1976
- † O. pulchellum Davis 1887
- † O. sahelaimae Costa 1857
- † O. tselfatense Gaudant 1978
- Genus †
Omosomopsis Gaudant 1978
- † Omosomopsis sima (Arambourg 1954) Gaudant 1978
- Genus †
Parapolymixia David 1946
- † Parapolymixia californica David 1946
- Genus †
Pycnosterinx Heckel 1849 [
Imogaster Costa 1857]
- † P. discoides Heckel 1849
- † P. dorsalis Pictet 1850
- † P. heckelii Pictet 1850
- † P. latus Davis 1887
- † P. russeggeri Heckel 1849 [Homonotus pulcher Davis 1886
- Genus
Polymixia Lowe 1836 [
Dinemus Poey 1860;
Nemobrama Valenciennes 1860 non Jordan, Evermann & Clark 1930]
- P. berndti Gilbert 1905 (Pacific beardfish)
- P. busakhini Kotlyar 1993 (Busakhin's beardfish)
- P. fusca Kotthaus 1970
- P. japonica Günther 1877 (Silver eye)
- P. longispina Deng, Xiong & Zhan 1983 [Polymixia kawadae Okamura & Ema 1985
- P. lowei Günther 1859 (Beardfish)
- P. nobilis Lowe 1838 [Nemobrama webbii Valenciennes 1837; Dinemus venustus Poey 1860; Polymixia nobilis virginica Nichols & Firth 1936] (Stout beardfish)
- † P. polita Schwarzhans 2012
- P. salagomeziensis Kotlyar 1991
- P. sazonovi Kotlyar 1992
- P. yuri Kotlyar 1982
- Genus †
Cumbaaichthys Murray 2016
Timeline of genera
References
- ^ Froese, Rainer, and Daniel Pauly, eds. (2006). "Polymixiiformes" in FishBase. February 2006 version.
- ^ Joseph S. Nelson. Fishes of the World. John Wiley & Sons. ISBN 0-471-54713-1.
- ^ a b Paxton, John R. (1998). Paxton, J.R.; Eschmeyer, W.N. (eds.). Encyclopedia of Fishes. San Diego: Academic Press. p. 161. ISBN 0-12-547665-5.
- ^ Murray, Alison M. (2014). "Mid-Cretaceous acanthomorph fishes with the description of a new species from the Turonian of Lac des Bois, Northwest Territories, Canada". Vertebrate Anatomy Morphology Palaeontology. 1: 101–115. doi: 10.18435/B5CC78. ISSN 2292-1389.
- ^ Haaramo, Mikko (2007). "Polymixiomorpha – beardfishes and relatives". Mikko's Phylogeny Archive. Retrieved 30 December 2016.
- ^ "Part 7- Vertebrates". Collection of genus-group names in a systematic arrangement. Archived from the original on 2016-10-05. Retrieved 30 June 2016.
- Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology. 364: 560. Archived from the original on 2011-07-23. Retrieved 2011-05-17.