Liaoconodon hui,Fossil Mammal With Transitional Middle Ear, an Early Cretaceous eutriconodont mammal from the Jehol Biota, Liaoning,

Liaoconodon hui is a medium-sized mammal for the Mesozioc (35.7 cm long from nose to tip of tail, or about 14 inches) and dates from 125 to 122 million years.