Andreolepis hedei

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Andreolepis hedei
Temporal range: Late Silurian
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Superclass: Osteichthyes
Class: Actinopterygii
Order: Palaeonisciformes
Family: Andreolepididae
Genus: Andreolepis
Species: A. hedei
Binomial name
Andreolepis hedei
Gross, 1968

Andreolepis hedei, an extinct prehistoric fish, has proven so far to be the earliest-known actinopterygiian, living around 420 million years ago.[1] It inhabited what is now Russia, Sweden, Estonia, and Latvia.[2]