"Sugiyamasaurus" is the informal name given to an as yet undescribed genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of dinosaur

Dinosaur

Dinosaurs are a diverse group of animals of the clade and superorder Dinosauria. They were the dominant terrestrial vertebrates for over 160 million years, from the late Triassic period until the end of the Cretaceous , when the Cretaceous–Paleogene extinction event led to the extinction of...

 known only from a few spatula

Spatula

The term spatula is used to refer to various small implements with a broad, flat, flexible blade used to mix, spread and lift materials including foods, drugs, plaster and paints...

te teeth. It was a sauropod, possibly a camarasaurid

Camarasaurus

Camarasaurus meaning 'chambered lizard', referring to the hollow chambers in its vertebrae was a genus of quadrupedal, herbivorous dinosaurs. It was the most common of the giant sauropods to be found in North America...

, which lived in Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

 during the Late Cretaceous

Late Cretaceous

The Late Cretaceous is the younger of two epochs into which the Cretaceous period is divided in the geologic timescale. Rock strata from this epoch form the Upper Cretaceous series...

. The name was first printed by David Lambert

David Lambert

David Lambert may refer to:*Dave Lambert , lyricist, singer and originator of vocalese; best known as member of Lambert, Hendricks & Ross...

 in 1990 in the Dinosaur Data Book, and also appears in Lambert's Ultimate Dinosaur Book and in many on-line lists of dinosaurs. Since it has not been formally described, "Sugiyamasaurus" is a nomen nudum

Nomen nudum

The phrase nomen nudum is a Latin term, meaning "naked name", used in taxonomy...

. Its remains were found near Katsuyama City

Katsuyama, Fukui

is a city located in Fukui, Japan.As of October 1, 2005, the city has an estimated population of 26,961 and the density of 106.28 persons per km²...

.

External links

• "Sugiyamasaurus" in the Dinosaur Encyclopaedia at Dino Russ's Lair