Ultrasaurus

Ultrasaurus
Temporal occurrence
	Lower Cretaceous
	145 to 100.5 million years
Locations
	South Korea ( Hayang Group );
Systematics
	Dinosaur (dinosauria)
	Lizard dinosaur (Saurischia)
	Sauropodomorpha
	Sauropods (Sauropoda)
	Ultrasaurus
Scientific name
	Ultrasaurus
	Kim , 1983
Art
	Ultrasaurus tabriensis Kim, 1983 ;

Ultrasaurus is a possible genus of dinosaurs from the group of sauropods . It was described in 1983 by the paleontologist Haang Mok Kim using two bone fragments that come from the Lower Cretaceous South Korea . The only species Kim named as Ultrasaurus tabriensis . Due to the incompleteness of the fossils, Ultrasaurus cannot currently be differentiated from other sauropod genera, which is why the genus is now known as the noun dubium (dubious name). The few remains also provide too few indications for a systematic classification within the sauropods.

Only the fragment of the spinous process of a caudal vertebra and a fragmentary humerus are known. Kim mistook the humerus for a very large cubit , however, and concluded that it must be an unusually large sauropod - accordingly he chose the generic name ( Ultrasaurus - "over-lizard"). The fossils come from a road outcrop in the north of the former Korean province of Gyeongsang-do . This site, which belongs to the Hayang group , also contained the thigh bone of a theropod dinosaur .

Ultrasaurus and Ultrasauros

Kim scientifically described Ultrasaurus in 1983 . However, the name "Ultrasaurus" was previously used as an unofficial name for an animal discovered in the USA in 1979 and was planned as a new generic name. The official description of this animal under the name Ultrasaurus macintoshi did not follow until 1985. However, the use of the same name for two different genera violated the International Rules for Zoological Nomenclature (ICZN): These rules provide that in the event of the same name, the earlier scientific publication In this case the Korean find is decisive. Therefore, another name had to be chosen for the American genus - Ultrasaur o s . Today it is certain that the North American finds called ultrasauros come from two different dinosaurs, the designation is therefore invalid.

Individual evidence

↑ ^a ^b ^c Haang Mook Kim: [Lower Cretaceous dinosaur remains from Korea]. In: The Journal of the Geological Society of Korea. Vol. 19, No. 3, 1983, ISSN 0435-4036 , pp. 115-126, (In Korean language and script).
^ Paul Upchurch , Paul M. Barrett , Peter Dodson : Sauropoda. In: David B. Weishampel , Peter Dodson, Halszka Osmólska (eds.): The Dinosauria . 2nd edition. University of California Press, Berkeley CA et al. 2004, ISBN 0-520-24209-2 , pp. 259-324, here p. 271.
^ ^A ^b Brian D. Curtice, Kenneth L. Stadtman, Linda J. Curtice: A reassessment of Ultrasauros macintoshi (Jensen, 1985). In: Michael Morales (Ed.): The Continental Jurassic. Transactions of the Continental Jurassic Symposium, October 21-23, 1996, Museum of Northern Arizona, Flagstaff, Arizona (= Museum of Northern Arizona Press. Bulletin Series. Vol. 60). Museum of Northern Arizona, Flagstaff AZ 1996, ISBN 0-89734-119-8 , pp. 87-95, here pp. 87-88: History , digitized (PDF; 378.55 KB) .
↑ James A. Jensen: Three new sauropod dinosaurs from the Upper Jurassic of Colorado. In: Western North American Naturalist. Vol. 45, No. 4, 1985, ISSN 1527-0904 , pp. 697-709, here pp. 704-707, online .

[kim_83-1] Haang Mook Kim: [Lower Cretaceous dinosaur remains from Korea]. In: The Journal of the Geological Society of Korea. Vol. 19, No. 3, 1983, ISSN 0435-4036 , pp. 115-126, (In Korean language and script).

[upchurch_04-2] Paul Upchurch , Paul M. Barrett , Peter Dodson : Sauropoda. In: David B. Weishampel , Peter Dodson, Halszka Osmólska (eds.): The Dinosauria . 2nd edition. University of California Press, Berkeley CA et al. 2004, ISBN 0-520-24209-2 , pp. 259-324, here p. 271.

[curtice_96_history-3] A ^b Brian D. Curtice, Kenneth L. Stadtman, Linda J. Curtice: A reassessment of Ultrasauros macintoshi (Jensen, 1985). In: Michael Morales (Ed.): The Continental Jurassic. Transactions of the Continental Jurassic Symposium, October 21-23, 1996, Museum of Northern Arizona, Flagstaff, Arizona (= Museum of Northern Arizona Press. Bulletin Series. Vol. 60). Museum of Northern Arizona, Flagstaff AZ 1996, ISBN 0-89734-119-8 , pp. 87-95, here pp. 87-88: History , digitized (PDF; 378.55 KB) .

[jensen_85-4] James A. Jensen: Three new sauropod dinosaurs from the Upper Jurassic of Colorado. In: Western North American Naturalist. Vol. 45, No. 4, 1985, ISSN 1527-0904 , pp. 697-709, here pp. 704-707, online .