云南罗平中三叠世翼鳕属一新种及早期辐鳍鱼类系统发育关系
任艺, 徐光辉

A new species of Pteronisculus from the Middle Triassic (Anisian) of Luoping, Yunnan, China, and phylogenetic relationships of early actinopterygian fishes
REN Yi, XU Guang-Hui
Fig. 15 Comparisons of preopercles (A) and maxillae (B) in different species ofPteronisculus
Not to scale