[D] Ultrasaurus macintoshi [Pr]
Saurischia Sauropodomorpha Sauropoda Diplodocidae Diplodocinae
Supersaurus vivianae (Jensen, 1985) > Ultrasauros macintoshi (Jensen vide Olshevsky, 1991) >> Ultrasaurus macintoshi.(Jensen, 1985 preoccupied)
Named to indicate that the genus was larger than the \\\\\\\"Supersaurus\\\\\\\" Jensen had discovered earlier, based on the huge size of its shoulder blade.
The name \\\\\\\"Ultrasaurus\\\\\\\" was used informally for the specimen in both popular and technical literature as early as 1979, but remained a nomen nudum until 1985, when Jensen finally published a formal description.
By then, however, the official name Ultrasaurus had been used by Kim for a Korean dinosaur, and Jensen\\\\\\\'s proposed name was preoccupied.