Complex sentence: It is found only in the Cordillera Oriental of eastern Ecuador, where it occurs in forests and grasslands at 3380 to 3720 m (11090 to 12200 ft) above sea level, where it may occur with seven other species of "Thomasomys".
Split into simpler sentences: It is found only in the Cordillera Oriental of eastern Ecuador, where it is found in forests and grasslands at 3380 to 3720 m (11090 to 12200 ft) above sea level. It may occur with seven other species of "Thomasomys".