Fossil and life restoration of Asteracanthus, from the Late Jurassic of Europe
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Class:
Chondrichthyes
Subclass:
Elasmobranchii
Infraclass:
Euselachii
Order:
†Hybodontiformes Patterson, 1966
Families
See text
Hybodontiformes, commonly called hybodonts, are an extinct group of shark-like cartilaginous fish (chondrichthyans) which existed from the late Devonian to the Late Cretaceous. Hybodonts share a close common ancestry with modern sharks and rays (Neoselachii) as part of the clade Euselachii. They are distinguished from other chondrichthyans by their distinctive fin spines and cephalic spines present on the heads of males. An ecologically diverse group, they were abundant in marine and freshwater environments during the late Paleozoic and early Mesozoic, but were rare in open marine environments by the end of the Jurassic, having been largely replaced by modern sharks, though they were still common in freshwater and marginal marine habitats. They survived until the end of the Cretaceous, before going extinct.
refuted. Hybodontiformes are total group-elasmobranchs and the sister group to Neoselachii, which includes modern sharks and rays. Hybodontiformes and Neoselachii...
extinct groups of elasmobranchs sensu lato include the hybodonts (Order Hybodontiformes), xenacanths (order Xenacanthformes) and Ctenacanthiformes. These are...
This is an incomplete list that briefly describes vertebrates that were extant during the Campanian, a stage of the Late Cretaceous Period which extended...
dorsal fins that would have helped it steer with precision. As in other Hybodontiformes, dentinous fin spines were present on the dorsal fins of Hybodus. The...
2010). "A Late Jurassic freshwater shark assemblage (Chondrichthyes, Hybodontiformes) from the southern Junggar Basin, Xinjiang, Northwest China". Palaeobiodiversity...
The Northumberland Formation is a Late Cretaceous (?Campanian-?Maastrichtian)-aged geologic formation in Canada. It belongs to the larger Nanaimo Group...
that the frilled shark's evolutionary tree indicated relation to the Hybodontiformes (hybodonts), which were the dominant species of shark during the Mesozoic...
spines are typically developed in many fossil groups, such as in †Hybodontiformes, †Ctenacanthiformes or †Xenacanthida. In †Stethacanthus, the first...
Andreas T. (1 June 2016). "A new hybodontid shark (Chondrichthyes, Hybodontiformes) from the Lower Jurassic Posidonienschiefer Formation of Dotternhausen...
Ptychodus Ptychodus is a genus of extinct shark (previously considered as hybodontiformes but later denied) that lived from the late Cretaceous to the Paleogene...
oldest Gondwanan record of durophagous shark Strophodus Agassiz, 1838 (Hybodontiformes) from the Kachchh Basin, western India". Historical Biology: An International...
Gansuselache is a genus of extinct elasmobranch in the order Hybodontiformes, comprising one species, Gansuselache tungshengi (monotypy) from Gansu Province...
David D.; Martill, David M.; Brito, Paulo M. (January 2012). "The Hybodontiformes (Chondrichthyes: Elasmobranchii) from the Missão Velha Formation (...
spawned in shallow-water vegetated areas. Its placement within the Hybodontiformes is uncertain. Historically it has been asserted to be a member of the...
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