Gillicus arcuatus

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Gillicus arcuatus
Fossil range: Late Cretaceous

Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Pachycormiformes
Family: Ichthyodectidae
Subfamily: Ichthyodectinae
Genus: Gillicus
Species: G. arcuatus
Binomial name
Gillicus arcuatus
Cope, 1875

Gillicus arcuatus was a relatively small, 2-meter long ichthyodectid fish that lived in the Western Interior Seaway, in what is now central North America, during the Late Cretaceous. Like its larger relative, Ichthyodectes ctenodon, G. arcuatus had numerous small teeth lining its jaws, and ate smaller fish by sucking them into its mouth.