孙氏孔子鸟
学名：confuciusornis suniae hou, 1997
时代：晚侏罗世义县组下部
产地：中国辽宁省北票市上园镇四合屯
学名来源：种名赠给提供化石研究的梁士宽先生已故夫人。
保存状况：完整个体。
基本特征：这一与圣贤孔子鸟产于同一地点的原始鸟类，与圣贤孔子鸟不同的主要特征有：前上颌吻端具有一特殊的豁口，前上颌骨鼻突长，额骨短，顶骨发育。最后三个腰椎突愈合，荐椎横突与髂骨内壁贴连，荐椎神经棘相联合。尾椎已基本愈合等。另外，孙氏孔子鸟的形态特征有许多比较进步的方面。
age: lower part of yixian formation, late jurassic
locality: sihetun, shangyuan, beipiao city, liaoning province, china
etymology: species name after the late wife of mr.shikuan liang who donated the specimen for scientific research.
preservation: a complete individual.
diagnosis: a primitive bird from the sanme locality of confuciusornis sanctus. different from c.sanctus by: a special fenestra at the anterior premaxilla, nasal process of premaxilla long, frontal short, parietal well-developed, last three lumbar vertebrae fused, transverse processes of sacrals in contact with inner wall of ilium, nevral spine of sacrals fused, caudals fused. more advanced than c.anctus.