Sanshuiornis zhangi was named by Wang et al. (2012) [Medium−sized bird, which differs from all other known avian taxa in the block−like hypotarsus (Fig. 3), which exhibits four cristae and three well−delimited sulci. The new taxon differs from Rhynchaeites in having the tarsometatarsus much longer, without marked tubercle on mid−section of proximal rim of medial parahypotarsal fossa, first phalanx of first pedal digit proportional longer, and four hypotarsal cristae more prominent. It differs from Eociconia sangequanensis in being proportionally much smaller, and having trochlea metatarsi III in midline of tarsometatarsus. It is distinguished from Eogruidae in that the tarsometatarsus is much shorter, trochlea for second toe not reduced, and digit I well developed.]. Its type specimen is IVPP V18116, a set of limb elements (a distal right tibiotarsus in articulation with a complete right foot, with tarsometatarsus and pedal phalanges in articulation), and it is a 3D body fossil. Its type locality is Sanshuiornis-type locality, which is in an Eocene terrestrial horizon in the Huayong Formation of China.