Ctenacanthiformes
Sign in to saveCtenacanthiformes is an extinct order of cartilaginous fish. They possessed ornamented fin spines at the front of their dorsal fins and cladodont-type dentition, that is typically of a grasping morphology, though some taxa developed cutting and gouging tooth morphologies. Some ctenacanths are thought to have reached sizes comparable to the great white shark, with body lengths of up to and weights of , while others reached lengths of only . The earliest ctenacanths appeared during the Frasnian stage of the Late Devonian (~383-372 million years ago), with the group reaching their greatest divers
Wikidata facts
- Parent taxon
- Elasmobranchs
- Image
- Dracopristis hoffmanorum.png
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- Commons category
- Ctenacanthiformes
- taxon rank
- order
- taxon name
- Ctenacanthiformes
Sources (1)
via Wikidata · CC0
Article · Italiano
Gli ctenacantiformi (Ctenacanthiformes) sono un ordine di squali estinti, vissuti tra il Devoniano superiore e il Triassico (360 – 220 milioni di anni fa). Da molti studiosi sono considerati i potenziali antenati degli squali odierni, e i loro fossili si rinvengono in molti luoghi del pianeta, in particolare in Europa e in Nordamerica, ma anche in Australia e in Asia.
Abstract from DBpedia / Wikipedia · CC BY-SA