Here's a list of Triassic dinosaurs. If you know of any more, feel free to add them.
More periods to follow.
Archosauromorphs
Archosaurs
Beinotherium
Chindesaurus
Coloradisaurus
Crocodilian
Cromptodon
Cynodont
Cygnognathus
Desmatosuchus
Dicynodont
Eoraptor
Herrerasaurus
Lystrosaurus
Machaeroprospus
Macronemus
Megalancosaurus
Mussaurus
Ornithodirans
Pisanosaurus
Placerias
Plateosaurus
Pretosuchus
Prolatcertiform
Prosauropod
Proto-pterosaur
Rauisuchian
Rhynchosaur
Riojasaurus
Saurischian
Saurosuchus
Scaphonyx
Seliosaurus
Sinokannemeyeria
Sharovipteryx
Staurikosaurus
Tanystropheus
Tanytrachelos
Thrinaxodon
Ticinosuchus
Tribolodon
Trilophosaurus