Coelophysis bauri (Cope1889, Colbert 1989) Norian, Late Triassic ~210mya, 3 m in length, was derived from a sister to Tawa and phylogenetically preceded theropod dinosaurs, including Guanlong and Aurornis in the lineage of birds.

Distinct from Tawa, the skull of Coelophysis had a longer rostrum. The forelimb was more robust. The pelvis was elongated in every direction. The ilium has a larger anterior and posterior process with more sacrals between them. The pubis extended far anteroventrally and the ischium was likewise elongated. The hind limb was relatively shorter and the pes was smaller with more robust digits. Pedal digit 1 was a vestige. So was pedal digit 5.

Dilophosaurus wetherilli (Welles 1970; early Jurassic, 193 mya; 7m in length) has dual crests over the rostrum and nests as a larger sister to Coelophysis. The maxillary teeth were extremely long.

Notatesseraeraptor frickensis (Zahner and Brinkmann 2019; Late Triassic) is a smaller sister to Dilophosaurus in the LRT and the first theropod from Switzerland.

Cope ED 1889. On a new genus of Triassic Dinosauria. American Naturalist 23: 626 
Late Triassic Norian.

Colbert E 1989. The Triassic Dinosaur Coelophysis. Museum of Northern Arizona Bulletin 57: 160.

Paul GS 1988. Predatory Dinosaurs of the World. Simon & Schuster. p. 260. ISBN 0-671-61946-2.

Zahner M and Brinkman W 2019. A Triassic averostran-line theropod from Switzerland and the early evolution of dinosaurs. Nature Ecology & Evolution 3:1146–1152.

wiki/Coelophysis
wiki/Dilophosaurus
wiki/ Notatesseraeraptor