Slekta hører til i familien Ekte frosker, Ranidae.
Spissnutefrosk, Rana arvalis "Moor Frog (Rana arvalis)" by Billy Lindblom via Flickr, Creative Commons Attribution. | Skogfrosk, Rana sylvatica "Chubby Wood Frog, closer" by DaveHuth via Flickr, Creative Commons Attribution. |
Vanlig frosk, Rana temporaria "Common frog" by Scarygami via Flickr, Creative Commons Attribution ShareAlike. |