Plesiosaur (†Dolichorhynchops osborni) head CollectA replica

Superdomain: Neomura

Domain: Eukaryota

(unranked): Opisthokonta

(unranked) Holozoa

(unranked) Filozoa

Kingdom: Animalia

Subkingdom: Eumetazoa

(unranked): Bilateria

Superphylum: Deuterostomia

Phylum: Chordata

Subphylum: Vertebrata

Superclass: Tetrapoda

Class: Reptilia

Clade: Eureptilia

Clade: Romeriida

Clade: Diapsida

Clade: Neodiapsida

Clade: Sauria

Clade: Pantestudines

Superorder: †Sauropterygia

(unranked): †Eusauropterygia

Order: †Plesiosauria

Clade: †Neoplesiosauria

Superfamily: †Plesiosauroidea

Clade: †Cryptoclidia

Clade: †Xenopsaria

Clade: †Leptocleidia

Family: †Polycotylidae

Subfamily: †Polycotylinae

Genus: †Dolichorhynchops

Species: †D. osborni

Done