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RANGE <br />FAMILY: Ambystomidae (cont'd) <br />A. t. utahensis <br />Arizona ................................. <br />Colorado ............................... <br />New Mexico .......................... <br />Utah ..................................... <br />Wyoming ............................... <br />FAMILY: Bufonidae <br />COLORADO RIVER TOAD - Bufo alvarius <br />REMARKS <br />...... Undetermined <br />...... Undetermined <br />............ Common <br />............. Common <br />............. Common <br />Arizona ................................................................................ common <br />California ...................................................................... Undetermined <br />New Mexico ............................ Rare, endangered, isolated populations <br />WESTERN TOAD - Bufo boreas <br />Colorado .................................... <br />Nevada ...................................... <br />Utah .......................................... <br />Wyoming .................................... <br />GREAT PLAINS TOAD - Bufo cognatus <br />Arizona ................................... <br />California ................................ <br />Nevada ................................... <br />New Mexico ............................ <br />Utah ....................................... <br />GREEN TOAD - Bufo debilis <br />B. d. insidior <br />Arizona ................................... <br />New Mexico ............................ <br />................ Common <br />............... Peripheral <br />................ Common <br />................ Common <br />....................................... Common <br />....................................... Common <br />....................................... Common <br />....................................... Common <br />........................................ Common <br />............................ Rare, peripheral <br />.... Uncommon, isolated populations <br />14