恐龍卡第 0872 張，共 2 027 張

Incisivosaurus

名字的意思： “incisor lizard”1

吃：植物奇特的羽毛恐龍白堊紀早期

Incisivosaurus was a small, feathered dinosaur with a pair of big front teeth that looked like a rodent's incisors. It used these teeth to gnaw on plants, making it one of the first meat-eating dinosaurs known to eat mostly plants.1 2

生存年代

126 到 100 百萬年前4

白堊紀早期

化石發現地

Lujiatun, Shangyuan, Beipiao City, Liaoning, China; Yixian Formation2

長度

1 到 1.5 m (3.3 到 4.9 ft)2

高度

0.62 m (2 ft)

估計值

最高速度

時速約 38 公里（24 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

牠有多大？

牠有多長？

牠有多高？

估計值

跟 3 隻家貓從鼻子接到尾巴一樣長跟 8 根香蕉頭尾相接一樣長能在 9.5 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Incisivosaurus 跟「你」比起來有多大？

只是在你的瀏覽器裡算算數學。什麼都不會被儲存或傳送出去。

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)

Incisivosaurus 時速約 38 公里 (24 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

Incisivosaurus had a pair of very large, chisel-like front teeth that stuck out forward, just like a beaver or rabbit. No other meat-eating dinosaur had teeth like that.1 2

Its cheek teeth were small and shaped like lance heads, with big wear facets from chewing plants. This shows Incisivosaurus chewed its food, unlike many other dinosaurs.1 2

Incisivosaurus lived about 128 million years ago, making it the oldest known oviraptorosaur dinosaur. It was a basal member of this group.1 2

Its skull was low and had teeth, unlike later oviraptorosaurs which had short, toothless beaks. This helps scientists understand how oviraptorosaurs evolved.1 2

The name Incisivosaurus means 'incisor lizard' because of its rodent-like front teeth. The species name gauthieri honors paleontologist Jacques Gauthier.1 2

Incisivosaurus is known from a nearly complete skull and a neck vertebra. Its body size is estimated from the skull, which is about 10 cm long.2

It was a feathered dinosaur, like other oviraptorosaurs, and probably walked on two legs. It was a small dinosaur, about the size of a turkey.4

Incisivosaurus 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Incisivosaurus 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 Incisivosaurus 最常被問的問題

?How big was Incisivosaurus?

It was a small dinosaur. Its skull was about 10 cm long.3 1

?What did Incisivosaurus eat?

It ate plants. Its rodent-like front teeth and worn cheek teeth show it was adapted for herbivory.3 1

?Did Incisivosaurus have feathers?

Yes, it had feathers. Two juvenile specimens show long vaned feathers on the hands and tail, and downy feathers on the body.3

?Why did Incisivosaurus have big front teeth?

It used its large, chisel-like front teeth to gnaw on tough plants, similar to rodents.3 1

?When did Incisivosaurus live?

It lived in the early Cretaceous Period, about 126 to 128 million years ago.3 1

迷思破解王

迷思： Incisivosaurus was a meat-eater like most theropods.

真相： Incisivosaurus had teeth adapted for eating plants, with rodent-like incisors and flat cheek teeth for chewing. It is the first theropod with clear evidence of a herbivorous diet.1 2

給恐龍專家

學名: Incisivosaurus
命名者: Xu et al. 20024
類群: 奇特的羽毛恐龍
科 / 演化支: Oviraptorosauria4
分類: Theropoda > Oviraptorosauria4
岩石的年代: 126 到 100 百萬年 (Barremian / Albian)4
岩層: Fuxin, Yixian, Shahai4
國家: 中國4
化石紀錄: The Paleobiology Database 收錄 4 筆4
發現: Incisivosaurus was named in 2002 by Xing Xu and colleagues from a skull and neck vertebra found in Liaoning, China. The fossils came from the Yixian Formation, which is about 128 million years old.1 2
仍有爭議: Scientists are not sure if Incisivosaurus had feathers all over its body or just on some parts, because only the skull and a neck bone have been found.4