| PT | an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae) |
|---|---|
| PT | used in some classification systems: a group of extinct fossil gymnosperms coextensive with the order Cycadofilicales |
| PT | used in some classification systems: a group of extinct fossil gymnosperms coextensive with the order Cycadofilicales |
| PT | extinct gymnosperms most of Carboniferous to Jurassic: seed ferns and allies |
| PT | pearl oysters |
| PT | the craniometric point in the region of the sphenoid fontanelle |
| PT | large genus of terrestrial ferns of tropics and subtropics |
| PT | cultivated in many varieties as houseplants |
| PT | Asiatic fern introduced in America |
| PT | fern of North Africa and Azores and Canary Islands |
| PT | burrowing treefrogs |
| PT | terrestrial burrowing nocturnal frog of grassy terrain and scrub forests having very hard upper surface of head |