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nounfrom 280 million to 230 million years ago; reptiles
Similar:
part of:
Definition that contains permian
- subdivision coniferophytina 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)
- pelycosaur large primitive reptile having a tall spinal sail; of the Permian or late Paleozoic in Europe and North America
- 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)
- therapsida extinct mammal-like reptiles found inhabiting all continents from the mid Permian to late Triassic
- order temnospondyli formerly a suborder of Stegocephalia; large Carboniferous and Permian amphibians having vertebrae in which some elements remain separate
- class 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)
- synapsida extinct reptiles of the Permian to Jurassic considered ancestral to mammals
- subclass anapsida oldest known reptiles; turtles and extinct Permian forms
- dimetrodon carnivorous dinosaur of the Permian in North America having a crest or dorsal sail
- order thecodontia extinct terrestrial reptiles having teeth set in sockets; of the late Permian to Triassic