In the Carnivora, the carnassials are the modified last upper premolar and the first molar.

Apart from that the Adelphailurus had a retained upper second premolar, which is unusual for a cat.

The shorter jaw has fewer teeth than is usual among felids, with the first pair of upper premolars being absent.

Due to its longer rostrum, its third upper premolar lies almost in line with the others, rather than at an angle.

The upper premolars of Proconsul nyanzae were large.

The skull contains a pronounced swelling around the nose and the second upper premolar is displaced outside the toothrow.

The anterior upper premolars are larger and sharper relative to other cats.

The last upper premolar and first lower molar of the cat are 'carnassials', used to slice meat and skin.

The carnassials are always the fourth upper premolar and the first lower molar.

P3-4 are upper premolars, whilst M1 is an upper molar tooth.