coniferopsida: cone-bearing gymnosperms dating from the Carboniferous period; most are substantial trees; includes the classes Pinopsida (subdivision Pinophytina) and Ginkgopsida (subdivision Ginkgophytina) and Taxopsida (subdivision Taxophytina) which in turn include the surviving orders Coniferales and Taxales (yews) and sometimes Ginkgoales as well as extinct orders such as Cordaitales (of the Carboniferous and Permian)
class: (biology) a taxonomic group containing one or more orders
desert tortoise: burrowing tortoise of the arid western United States and northern Mexico; may be reclassified as a member of genus Xerobates