This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Dilong (Chinese)
In Chinese mythology, dilong "earth dragon" is one of many types of long dragons such as shenlong "divine dragon" and huanglong "Yellow Dragon". Since dì "earth; land; soil; ground" semantically contrasts with tian "heaven; sky", the dilong is paired with the tianlong "heavenly dragon". Chinese dragons were supposedly able to fly, and thus were considered celestial creatures rather than terrestrial ones like the "earthbound" dilong.
Two other exceptions are panlong "coiled/curled dragon; a dragon that has not ascended to heaven" and tulong "soil/earth dragon", which refers to the tuo "Chinese Alligator". Dilong "earth dragon" is the modern Chinese term for the Mesozoic crocodilian Geosaurus (from Greek "earth lizard"). Contrast the feathered tyrannosaurid Dilong paradoxus that was named from Chinese dilong "emperor dragon".