Dodatak:Abecedni popis trilobita: Y
Ya[uredi | uredi kôd]
†Yabeia Reswer and Endo 1935[uredi | uredi kôd]
Trilobita → Ptychopariida Yankaoia Yanshanaspis,
Yi[uredi | uredi kôd]
Yichangaspis, Yiliangellina, Yinites, Yinpanolithus,
Yo[uredi | uredi kôd]
Yohoaspis, Yongwolagnostus
†Yoyarria Rusconi, 1955[uredi | uredi kôd]
- Yoyarria puelchana Rusconi 1955[1]
Animalia → Arthropoda → Trilobita → Trilobita incertae sedis
Yu[uredi | uredi kôd]
Yuehsieszella, Yuepingia, Yuepingioides Yukonia, Yukonides, Yukoniidae Yumenaspis Yunnanaspidella,
†Yunnanaspis Zhang, 1966[uredi | uredi kôd]
- †Yunnanaspis bilongispinus Zhang, 1966 [2] [3]
Trilobita → Redlichiida → Yinitidae
Yunnanocephalidae Yurakia