Cheiracanthus

Cheiracanthus
Temporal range: Middle Devonian
Fossil of Cheiracanthus latus at the London Natural History Museum
Scientific classification
Kingdom:Animalia
Phylum:Chordata
Class:Acanthodii
Genus:Cheiracanthus
Type species
Cheiracanthus murchisoni

Cheiracanthus ("hand spine") is an extinct genus of a group of fish called Acanthodii (or "spiny sharks"). It was a deep-bodied acanthodian about 12 in. (30 cm) in length. It had a blunt head, upturned tail, and fins protected by spines. Unlike many other acanthodians, it had one, solitary dorsal fin. Cheiracanthus swam at mid-depth in lakes and rivers, seizing small prey in its gaping jaws. Whole fossils of this fish occur only in Mid-Devonian rocks in Scotland, but its distinctive small, ornamented scales crop up around the world, as far south as Antarctica.

Life restoration of Cheiracanthus murchisoni

See also

List of acanthodians

References


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