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Calamopleurus information


Calamopleurus
Temporal range: Late Hauterivian to Early Cenomanian
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Calamopleurus cylindricus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Clade: Halecomorphi
Order: Amiiformes
Family: Amiidae
Subfamily: †Vidalamiinae
Genus: †Calamopleurus
Agassiz, 1841
Type species
Calamopleurus cylindricus
Agassiz, 1841
Species

See text

Calamopleurus is an prehistoric genus of marine holostean ray-finned fish from the Early Cretaceous of South America and northern Africa. It was a relative of the modern bowfin, with both belonging to the family Amiidae.[1]

It contains three species:[2][3]

  • †C. africanus Forey & Grande, 1998 - Late Albian/Early Cenomanian of Morocco and Algeria[4]
  • †C. cylindricus Agassiz, 1841 - Late Aptian/Early Albian of Brazil (Crato and Santana Formations)
  • †C. mawsoni Woodward, 1902 - Late Hauterivian/Early Barremian of Brazil (Bahia Group)

It is thought to be the sister genus to Maliamia, the last surviving member of the vidalamiines, which is the largely marine amiid group that also contained Calamopleurus. Both are placed in the tribe Calamopleurini.[1]

C. cylindricus was among the largest known amiids, rivaling the giant Paleocene bowfin Amia pattersoni in size. However, both were slightly smaller than Melvius and Amia basiloides, the two largest known amiids. It is one of the earliest known amiids to evolve a large body size.[5]

Fossil of Calamopleurus eating Rhacolepis
  1. ^ a b "PBDB Taxon". paleobiodb.org. Retrieved 2024-04-16.
  2. ^ Peter L. Forey & Lance Grande (1998). "An African twin to the Brazilian Calamopleurus (Actinopterygii: Amiidae)". Zoological Journal of the Linnean Society. 123 (2): 179–195. doi:10.1111/j.1096-3642.1998.tb01299.x.
  3. ^ Brito, Paulo M.; Nava, William R.; Martinelli, Agustin G. (2017-09-01). "A New Fossil Amiidae (Holostei: Halecomorphi) from the Upper Cretaceous Adamantina Formation, Southeastern Brazil, with comments on western Gondwana amiids". Cretaceous Research. 77: 39–43. Bibcode:2017CrRes..77...39B. doi:10.1016/j.cretres.2017.04.018. ISSN 0195-6671.
  4. ^ Benyoucef, Madani; Läng, Emilie; Cavin, Lionel; Mebarki, Kaddour; Adaci, Mohammed; Bensalah, Mustapha (2015). "Overabundance of piscivorous dinosaurs (Theropoda: Spinosauridae) in the mid-Cretaceous of North Africa: The Algerian dilemma". Cretaceous Research. 55: 44–55. Bibcode:2015CrRes..55...44B. doi:10.1016/j.cretres.2015.02.002. ISSN 0195-6671.
  5. ^ Brownstein, Chase D.; Near, Thomas J. (2024). "A giant bowfin from a Paleocene hothouse ecosystem in North America". academic.oup.com. doi:10.1093/zoolinnean/zlae042/7659736. Retrieved 2024-04-30.

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Calamopleurus

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Calamopleurus is an prehistoric genus of marine holostean ray-finned fish from the Early Cretaceous of South America and northern Africa. It was a relative...

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Amiidae

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Genus †Solnhofenamia Subfamily †Vidalamiinae (Early Cretaceous) Genus †Calamopleurus Genus †Maliamia Genus †Melvius Genus †Pachyamia Genus †Vidalamia Subfamily...

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Crato Formation

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Araripelepidotes Araripelepidotes temnurus Belonostomus Belonostomus sp. Calamopleurus Calamopleurus cylindricus Cladocyclus Cladocyclus gardneri An Ichthyodectidae...

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Halecomorphi

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The amiiform †Calamopleurus...

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Bowfin

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†Tomognathus †Sinamiidae Ikechaoamia Siamamia Sinamia Amiidae Amia †Amiopsis †Calamopleurus †Cratoamia †Cyclurus †Hispanamia †Maliamia †Melvius †Nipponamia †Pachyamia...

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Holostei

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Kem Kem Group

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Bawitius cf. B. sp. Isolated scales and jaw fragments A cladistian Calamopleurus C. africanus A partial skull A member of Amiiformes Concavotectum C...

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Amiiformes

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Grande & Bemis, 1998 Tribe †Calamopleurini Grande & Bemis, 1998 Genus †Calamopleurus Agassiz, 1841 Genus †Maliamia Patterson & Longbottom, 1989 Tribe †Vidalamiini...

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Romualdo Formation

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megaraptoran fossils. Araripelepidotes Beurlenichthys ouricuriensis Brannerion Calamopleurus Cladocyclus Enneles audax Iemanja palma Lepidotes wenzai Microdon penalvai...

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Pycnodontiformes

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Amia Calamopleurus...

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Caturus

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John Casper Branner

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previously helped to describe one of the species (B. vestitum, previously Calamopleurus vestitus) that was assigned to the genus. A species of crab found in...

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Maliamia

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teeth. Estimates put the body length of M. gigas between 1.8 (based on Calamopleurus) and 3.5 meters (based on Amia), making it the largest known member...

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Griman Creek Formation

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Actinopterygians of the Griman Creek Formation Taxa Species Presence Material Notes Images Calamopleurus? sp. Isolated jaw bones...

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Brannerion

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Rhacolepis latus Agassiz,1841) †B. vestitum (Jordan & Branner, 1908) (syn: Calamopleurus vestitus Jordan & Branner, 1908) It is common species in some localities...

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Sinamia

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Broughia

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Watsonulus

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Parasemionotiformes

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Melvius

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Lehmanotus

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Asialepidotus

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Petalopteryx

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Cipactlichthys

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Oshunia

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Siamamia

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Candelarialepis

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