is a specific kind of: amphibian genus.

has as a member: Rana sylvatica, wood-frog, wood frog | leopard frog, Rana pipiens, spring frog | bullfrog, Rana catesbeiana | green frog, Rana clamitans, spring frog | cascades frog, Rana cascadae | goliath frog, Rana goliath | pickerel frog, Rana palustris | Rana tarahumarae, tarahumara frog | grass frog, Rana temporaria.

is a member of: family Ranidae, Ranidae.