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Extinct order of cartilaginous fishes
Ctenacanthiformes is an extinct order of cartilaginous fish. They possessed ornamented fin spines at the front of their dorsal fins and cladodont-type
Ctenacanthiformes
Subclass of fishes
hybodonts (Order Hybodontiformes), xenacanths (order Xenacanthformes) and Ctenacanthiformes. These are also often referred to as "sharks" in reference to their
Elasmobranchii
Gill-bearing non-tetrapod aquatic vertebrates
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Fish
Class of ray-finned bony fishes
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Actinopterygii
Extinct genus of chordates
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Zhongxiniscus
Fifth period of the Paleozoic Era
and other marine organisms. Other groups of elasmobranchs, like the ctenacanthiformes grew to large sizes, with some genera like Saivodus reaching around
Carboniferous
Extinct genus of cartilaginous fishes
up to 3.7 meters (12 ft). Troglocladodus is a member of the order Ctenacanthiformes and the family Ctenacanthidae, and Hodnett and coauthors suggest that
Troglocladodus
Subphylum of chordates
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Lancelet
Enigmatic extinct genus of cartilaginous fish
uncertain relations to other groups. Though originally placed within Ctenacanthiformes, it is now considered Euselachii incertae sedis, due to its mixture
Acronemus
Extinct genus of jawless fishes
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Haikouichthys
Extinct genus of cartilaginous fishes
(February 2024). "New ctenacanth sharks (Chondrichthyes; Elasmobranchii; Ctenacanthiformes) from the Middle to Late Mississippian of Kentucky and Alabama". Journal
Glikmanius
Infraphylum of vertebrates
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Gnathostomata
Class of lobe-finned fishes
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Coelacanth
Extinct order of cartilaginous fishes
studies have found xenacanths to be nested within the traditional "Ctenacanthiformes", which would render that group paraphyletic. Cladogram after Luccisano
Xenacanthiformes
Extinct order of chondrichthyans
implications of the systematic reassessment of Xenacanthiformes and 'Ctenacanthiformes' (Chondrichthyes) neurocrania from the Carboniferous–Permian Autun
Hybodontiformes
Cambrian fossil chordate
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Yunnanozoon
Extinct agnathan chordates resembling eels
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Conodont
Division or infraclass of fishes
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Teleost
Origin and diversification of fish through geologic time
taxa: Cladoselache, Eugeneodontiformes, Symmoriida, Xenacanthiformes, Ctenacanthiformes, Hybodontiformes, Galeomorphi, Squaliformes and Batoidea. Bony fish
Evolution_of_fish
Paraphyletic infraphylum of fish
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Agnatha
is estimated that reached over 3 m (9.8 ft). The largest member of ctenacanthiformes is Saivodus striatus with estimated length around 6–9 m (20–30 ft)
Largest_prehistoric_animals
Diverse clade of vertebrate animals
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Osteichthyes
Extinct paraphyletic class of fishes
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Placoderm
Extinct genus of fish
John (2024). "New ctenacanth sharks (Chondrichthyes; Elasmobranchii; Ctenacanthiformes) from the Middle to Late Mississippian of Kentucky and Alabama". www
Saivodus
Extinct genus of cartilaginous fishes
Bandringa was originally described as an aberrant member of the order Ctenacanthiformes, its relationships to other elasmobranchs is currently unclear. Bandringa
Bandringa
Clade of lobe-finned fish
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Sarcopterygii
Family of fishes
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Snailfish
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Lists_of_prehistoric_fish
Extinct genus of cartilaginous fishes
implications of the systematic reassessment of Xenacanthiformes and 'Ctenacanthiformes' (Chondrichthyes) neurocrania from the Carboniferous–Permian Autun
Orthacanthus
Extinct genus of cartilaginous fish
the fins is more like earlier groups of chondrichthyan such as the Ctenacanthiformes. The genus is placed in the xenacanth family Diplodoselachidae. Diplodoselache
Diplodoselache
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Cooleyella
Group of extinct jawless vertebrates
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Anaspida
Cartilaginous fish in the order Chimaeriformes
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Chimaera
Class of jawed cartilaginous fish
2015 †Order Polymerolepidiformes †Order Ptychodontiformes †Order Ctenacanthiformes Zangerl, 1981 †Division Hybodonta †Order Hybodontiformes Owen, 1846
Chondrichthyes
Extinct genus of primitive chordates
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Pikaia
Extinct genus of cartilaginous fish
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Doliodus
Bony skin-covered spines or rays protruding from the body of a fish
typically developed in many fossil groups, such as in †Hybodontiformes, †Ctenacanthiformes or †Xenacanthida. In †Stethacanthus, the first dorsal fin spine was
Fish_fin
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Gogoselachus
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Acanthodopsis
Extinct genus of chordates
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Cathaymyrus
Extinct class of jawless fishes
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Cephalaspidomorphi
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Elegestolepis
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Lebachacanthus
Extinct order of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Synechodontiformes
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Stethacanthus
Extinct paraphyletic class of fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Acanthodii
Armored jawless fish of the Paleozoic
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Ostracoderm
Subclass of fishes
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Neopterygii
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Egertonodus
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Planohybodus
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Nostolepis
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
List of prehistoric cartilaginous fish genera
List_of_prehistoric_cartilaginous_fish_genera
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Ptomacanthus
Extinct group of elasmobranchs
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Phoebodontiformes
Superclass of jawless fishes
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Cyclostomi
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Plesioselachus
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Pucapampella
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Kasperacanthus
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Ischnacanthus
Extinct genus of hybodont shark
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Priohybodus
Extinct order of fishes
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Palaeoniscoid
Extinct genus of Cartilaginous fish
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Aztecodus
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Tetanopsyrus
Extinct genus of cartilaginous fish
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Heteroptychodus
Phylum: Chordata Class: Chondrichthyes Subclass: Elasmobranchii Order: †Ctenacanthiformes Family: †Ctenacanthidae Genus: †Amelacanthus Maisey, 1982 Species
Amelacanthus
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Climatius
Extinct genus of cartilaginous fishes
(2): 239–256. doi:10.1016/j.palwor.2018.10.003. ISSN 1871-174X. "†Ctenacanthiformes". www.mv.helsinki.fi. Retrieved 2024-09-14. Schaeffer, Bobb; Mangus
Carinacanthus
Extinct genus of Euselachian shark
Phylum: Chordata Class: Chondrichthyes Subclass: Elasmobranchii Order: †Ctenacanthiformes Family: †Ctenacanthidae Genus: †Acondylacanthus St. John & Worthen
Acondylacanthus
Clade of ray-finned fishes
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Cladistia
Extinct Silurian chondrichthyan genus
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Qianodus
Extinct order of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Symmoriiformes
Extinct family of jawless fishes
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Pituriaspida
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Parvodus
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Xenacanthus
Extinct group of cartilaginous fishes
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Eugeneodontiformes
Extinct family of cartilaginous fish
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Anachronistidae
Genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Acanthodes
Extinct order of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Mongolepidida
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Reginaselache
Clade of vertebrates
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Rhipidistia
Extinct genus of fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Phoebodus
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Fanjingshania
Extinct genus of hybodont cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Lonchidion
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Nerepisacanthus
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Falcatus
Extinct order of cartilaginous fishes
†Diplacanthiformes †Ischnacanthiformes Cartilaginous Elasmobranchii †Ctenacanthiformes †Hybodontiformes †Phoebodontiformes †Xenacanthida Ray Shark Holocephali
Petalodontiformes
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Reesodus
Extinct cartilaginous fish
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Bransonella
Genus of Chondrichthyes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Altholepis
Fossil genus of cartilaginous fish
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Synechodus
Extinct genus of Devonian spiny sharks
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Angelacanthus
Extinct genus of cartilaginous fish
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Cladoselache
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Gunnellia
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Ozarcus
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Strophodus
Extinct order of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Diplacanthiformes
Geological formation in Scotland
Chondrichthyes (cartilaginous fish): Ageleodus pectinatus, Cladodus sp. (Ctenacanthiformes?), Cooleyella sp. (Anachronistidae), Deihim sp. (Protacrodontidae)
Ballagan_Formation
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Triodus
Extinct genus of cartilaginous fishes
(February 2024). "New ctenacanth sharks (Chondrichthyes; Elasmobranchii; Ctenacanthiformes) from the Middle to Late Mississippian of Kentucky and Alabama". Journal
Kaibabvenator
Extinct genus of cartilaginous fishes
Stethacanthus Symmorium Holocephali see Holocephali includes chimaeras †"Ctenacanthiformes" Neosaivodus Saivodus Sculptospina Tamiobatis Ctenacanthidae Arduodens
Parexus
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