"Xerinae","","Sciuridae","humowrac*"

"Xerini","","Xerinae","humowrizo*"

"Xerus","African ground squirrels.","Xerini","humowr*"

"Xiphosura","","Merostomata","*"

"Xiphosurida","","Xiphosura","*"

"Zaglossus","","Tachyglossidae","*"

"Zalophus","","Otariidae","zalof*"

"Zatheria","","Trechnotheria","*"

"Zea","","Andropogoneae","ze*"

"Zelkova","Zelkova.","Ulmaceae","trabelem*"

"Zoraptera","Genus Zorotypus.","Pterygota","zorosek*"

"Zorotypidae","Genus Zorotypus.","Zoraptera","zorosek*"

"Zygoptera","Damselflies.","Odonata","zyqopt*"