Fukuisaurus‭ (‬Fukui lizard‭)‬

Short Info

Fukuisaurus‭ (‬Fukui lizard‭)‬

Phonetic : Foo-kwee-sore-us.

Named By : Kobayashi‭ & ‬Azuma‭ ‬-‭ ‬2003

Diet : Herbivore

Size : Estimated 4.5 – 4.7 meters long

Type of Dinosaur : Euornithopod

Type Species : F.‭ ‬tetoriensis (type)

Found in : Japan,‭ ‬Honshu Island,‭ ‬Fukui Prefecture,‭ ‬Kitadani Formation

When it Lived : Early Cretaceous, 121-99 million years ago

Fukuisaurus, which means “Fukui Lizard”, is a genus herbivorous ornithopod dinosaur. It lived in Japan’s Early Cretaceous. F. tetoriensis is the type species, and was first described in 2003.


Fukuisaurus skeletal mount★Kumiko★, CC BY-SA 2.0, via Wikimedia Commons


In 1989, Fukuisaurus remains were found in Katsuyama in Fukui Prefecture. They were found in rocks of the Kitadani Formation dating back to the Barremian. Yoshitsugu Kbayashi and Yoichi Yamama described the type species Fukuisaurus Tetoriensis in 2003. Fukui is the genus name. The specific Tetori Group name is Fukui. Type specimens or cotypes include FPDM–V-40-1, a right maxilla and FPDM–V-40-2, a left jugal. Additional elements from a skull as well as a right-sternal plate were also found. Many skeleton elements have been discovered since 2003, with more detailed finds.


フクイサウルス全身骨格Titomaurer, CC BY-SA 4.0, via Wikimedia Commons


Fukuisaurus was an ornithopod that was relatively small. Gregory S. Paul, in 2010, estimated that Fukuisaurus measured 4.5m in length and weighed 400kg. It was a bipedal and optionally quadrupedal animal. Its general build was similar to Altirhinus, Ouranosaurus, and Iguanodon. Fukuisaurus, according to the description, was unique in that its skull wasn’t kinetic. The tooth-bearing maxilla and vomer would be so fused that it would have made sideways chewing impossible.

Source: Wikipedia