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Congorhynchus (Greek for "Congo snout") is an enigmatic, likely polyphyletic genus of prehistoric marine ray-finned fish that was described by E. Darteville and E. Casier in 1949.[1]
It is only known from isolated spines that were previously interpreted as the fossilized rostra of an early billfish (possibly a blochiid ).[2] However, this interpretation has fallen out of favor, as they show no distinctive traits of billfish rostra or the rostra of "scombroids " in general. The extreme range of variation between different "species" in the genus also makes it unlikely that all species assigned to this genus are actually members of it.[3]
It contains two to three species, although given the likely polyphyly of this genus, C. trabeculatus may be the only true member:
The species †C. kinnei (Marsh , 1870 ) from the early Eocene Manasquan Formation of New Jersey is alternatively placed in this genus or in Embalorhynchus Marsh, 1870 .[2]
Fossils belonging to Congorhynchus date back to the Maastrichtian stage of the Late Cretaceous . If the Eocene species (C. elliotti and C. kinnei ) are members of this genus, or if the Paleocene fossils from Niger belong to this genus, then Congorhynchus would have survived the Cretaceous–Paleogene extinction event that killed the dinosaurs .[2]
See also
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References
[ edit ]
^ a b c Monsch, Kenneth A. (2004). "Revision of the scombroid fishes from the Cenozoic of England" . Earth and Environmental Science Transactions of the Royal Society of Edinburgh . 95 (3–4): 445–489. Bibcode :2004EESTR..95..445M . doi :10.1017/S0263593300001164 . ISSN 1755-6929 .
^ Silvano, Carlos Gaudari Pedro (2022). Geossítios de vertebrados fósseis de Angola (masterThesis thesis).
^ Michaut, Marc (2017), Poissons ostéichthyens du Maastrichtien au sud du Niger , retrieved 2024-06-10
^ Callahan, Wayne; Mehling, Carl; Denton, Robert K.; Parris, David (2021). "DataCite Commons: Vertebrate Paleontology and Stratigraphy of the Late Cretaceous Holmdel Park Site, Monmouth County, New Jersey" . commons.datacite.org . doi :10.13140/rg.2.2.36695.91043 . Retrieved 2024-06-10 .
^ Friedman, Matt; Beckett, Hermione T.; Close, Roger A.; Johanson, Zerina (2016). "The English Chalk and London Clay: two remarkable British bony fish Lagerstätten" . Geological Society, London, Special Publications . 430 (1 ): 165–200. Bibcode :2016GSLSP.430..165F . doi :10.1144/SP430.18 . ISSN 0305-8719 .
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R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=Congorhynchus&oldid=1233006209 "
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