Classificationification
Eukaryote
Animalia
Chordata
Mamalia
Carnivora
Ursidae
Ursus
U. arctos
Domain: Eukaryote
The grizzly bear has a true nucleus and membrane bound
organelles.
Kingdom: Animalia
Grizzly bears are multicellular and heterotrophic.
Phylum: Chordata
The presence of a dorsal notochord/vertebral column, hollow
neural tube, and post-anal tail place grizzlies in the phylum
Chordata. They are also deuterostomes, triploblastic, have
bilateral symmetry, and at some point during their development
they had pharyngeal slits.
Class: Mammalia
The distinguishing features of a grizzly that place it in the
class Mammalia are mammory glands, hair, and a four-chambered
heart.
Order: Carnivora
Grizzly bears have teeth, claws, and a gut specifically designed
to digest meat.
Family: Ursidae
The family name Ursidae is Latin for bear.
Genus: Ursus
The genus name Ursus is Latin for bear.
Species: U. arctos
U. arctos refers to any subspecies of brown bear.
Phylogenetic tree showing relationship between modern bears