†Ultrasauros Olshevsky 1991

Olshevsky 1991. A revision of the parainfraclass Archosauria Cope, 1869, excluding the advanced Crocodylia. Mesozoic meanderings no. 2. (1st printing). Published by the author, P.O.Box 16924, San Diego, CA,92176-6924, 1991: i-iv, 1-196