Extinct petalodont fish (†Megactenopetalus kaibabanus)

Superdomain: Neomura

Domain: Eukaryota

(unranked): Unikonta

(unranked): Obazoa

(unranked): Opisthokonta

(unranked) Holozoa

(unranked) Filozoa

Kingdom: Animalia

Subkingdom: Eumetazoa

Clade: ParaHoxozoa

Clade: Bilateria

Clade: Nephrozoa

Superphylum: Deuterostomia

Phylum: Chordata

Clade: Olfactores

Subphylum: Vertebrata

Infraphylum: Gnathostomata

Clade: Eugnathostomata

Class: Chondrichthyes

Subclass: Holocephali

Superorder: †Paraselachimorpha

Order: †Petalodontiformes

Family: †Pristodontidae

Genus: †Megactenopetalus

Species: †M. kaibabanus

Done