恐龍卡第 0982 張，共 2 027 張

Koshisaurus

名字的意思： “Koshi lizard, after the old name for the region where it was found”1

吃：植物有喙的草食恐龍白堊紀早期

Koshisaurus was a plant-eating dinosaur that lived in what is now Japan. It walked on two legs and had a beak for snipping leaves. This dinosaur was one of the earliest relatives of the duck-billed hadrosaurs.2 1

生存年代

121 到 113 百萬年前5

白堊紀早期

化石發現地

Fukui Prefecture, Japan2 1

最高速度

時速約 41 公里（25 英里）

跑步, 估計值

牠生活在什麼時候？

三疊紀

侏羅紀

白堊紀

2 億 5200 萬年前20114566，小行星撞地球

牠有多快？

走路的人 時速約 5 公里 (3 mph)

騎腳踏車的小朋友 時速約 12 公里 (7 mph)

Koshisaurus 時速約 41 公里 (25 mph)

一匹飛奔的馬 時速約 65 公里 (40 mph)

一隻獵豹 時速約 100 公里 (62 mph)

酷東西

趣味知識

Koshisaurus lived about 121 to 113 million years ago during the Early Cretaceous.2

It was a basal hadrosauroid, meaning it was an early relative of the duck-billed dinosaurs.1

Koshisaurus had an antorbital fossa, a hole in front of its eye socket on the skull, which is a primitive feature.1

Its teeth had at least three subsidiary ridges on the outer side, helping it grind plants.1

Koshisaurus shared its home with other dinosaurs like Fukuisaurus, Fukuiraptor, and Fukuititan.1

Koshisaurus 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Koshisaurus 可能的樣子。這只是猜測：真正的動物可能長得不一樣，也沒有人知道牠真正的顏色。

你們都在問

關於 Koshisaurus 最常被問的問題

?How big was Koshisaurus?

Scientists have not found enough bones to know its full size, but it was likely smaller than later duck-billed dinosaurs. Only a partial skeleton is known.1 3

?What did Koshisaurus eat?

It ate plants, using its beak to snip leaves and its ridged teeth to grind them up.4 3

?When did Koshisaurus live?

It lived during the Early Cretaceous, about 125 to 115 million years ago.3 5

?Where was Koshisaurus found?

Its fossils were found in Fukui Prefecture, Japan, in the Kitadani Formation.4 3

給恐龍專家

學名: Koshisaurus
命名者: Shibata and Azuma 20155
類群: 有喙的草食恐龍
科 / 演化支: Hadrosauroidea5
分類: Ornithischia > Ornithopoda > Iguanodontia5
岩石的年代: 121 到 113 百萬年 (Aptian)5
岩層: Kitadani5
國家: 日本5
化石紀錄: The Paleobiology Database 收錄 1 筆5
發現: Koshisaurus was named by Masateru Shibata and Yoichi Azuma in 2015 based on fossils from the Kitadani Formation in Fukui, Japan.2 1
仍有爭議: Scientists are not sure exactly how big Koshisaurus grew, because only partial fossils have been found.2