Extinct lungfish (†Ariguna formosa)

Superdomain: Neomura

Domain: Eukaryota

(unranked): Unikonta

(unranked): Obazoa

(unranked): Opisthokonta

(unranked) Holozoa

(unranked) Filozoa

Kingdom: Animalia

Subkingdom: Eumetazoa

(unranked): Bilateria

Superphylum: Deuterostomia

Phylum: Chordata

Subphylum: Vertebrata

Infraphylum: Gnathostomata

Superclass: Osteichthyes

Clade: Sarcopterygii

Class: Dipnoi

Order: Ceratodontiformes

Family: †Ceratodontidae

Genus: †Ariguna

Species: †A. formosa

Done