恐龍卡第 1676 張，共 2 027 張

Sinornithomimus

名字的意思： “Chinese bird mimic”1

吃：植物似鳥龍類白堊紀晚期

Sinornithomimus was a small, fast dinosaur that looked a bit like an ostrich. It lived in what is now China during the Late Cretaceous Period, about 92 to 90 million years ago. Scientists found many skeletons together, showing that these dinosaurs probably lived in herds.1 2

生存年代

94 到 90 百萬年前5

白堊紀晚期

化石發現地

Ulansuhai Formation, Inner Mongolia, China1 2

長度

2.5 m (8.2 ft)1

體重

91 kg (201 lb)1

高度

0.99 m (3.2 ft)

估計值

最高速度

時速約 66 公里（41 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

牠有多重？

跟 5 隻狗一樣重

跟 2.5 隻狗從鼻子接到尾巴一樣長跟 14 根香蕉頭尾相接一樣長跟 18 顆西瓜一樣重跟 5 個幼兒園小朋友一樣重跟 3 個小學生一樣重能在 5.5 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Sinornithomimus 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)

一匹飛奔的馬 時速約 65 公里 (40 mph)

Sinornithomimus 時速約 66 公里 (41 mph)

一隻獵豹 時速約 100 公里 (62 mph)

酷東西

趣味知識

At least fourteen skeletons of Sinornithomimus were found together in one spot, and most of them were young dinosaurs. This suggests they lived in groups, maybe to protect each other from predators.2 1

Sinornithomimus had gastroliths, or stomach stones, that helped it grind up tough plants. This is rare among bird-like dinosaurs and shows it was a plant-eater.1

The first fossils of Sinornithomimus were discovered in 1997 by Chinese paleontologist Dong Zhiming during the Mongol Highland International Dinosaur Project.1

Sinornithomimus was about 2.5 meters (8.2 feet) long and weighed around 91 kilograms (201 pounds). That is about as heavy as a large adult human.1

Adult Sinornithomimus had longer lower legs compared to their upper legs than juveniles did. This means they could run faster as they grew up.2 1

A second herd of thirteen young Sinornithomimus was found in 2001. They probably died together after getting stuck in the mud of a drying waterhole.1

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

?What did Sinornithomimus eat?

It ate plants. Scientists found gastroliths (stomach stones) in its fossils that helped grind up tough plant food.1

?How fast could Sinornithomimus run?

Nobody knows exactly, but it was a fast runner. Adults had longer lower legs than juveniles, which made them even faster.1

?Did Sinornithomimus live in groups?

Yes. Many skeletons were found together, including two herds of mostly young dinosaurs, showing they lived in groups.1 4

?How did Sinornithomimus die?

One group probably died after getting stuck in the mud of a drying waterhole. Their fossils show they struggled to escape.1 4

給恐龍專家

學名: Sinornithomimus
命名者: Kobayashi and Lü 20035
類群: 似鳥龍類
科 / 演化支: Ornithomimidae5
分類: Theropoda > Ornithomimosauria5
岩石的年代: 94 到 90 百萬年 (Turonian)5
岩層: Ulansuhai5
國家: 中國5
化石紀錄: The Paleobiology Database 收錄 1 筆5
發現: Sinornithomimus was named and described by Yoshitsugu Kobayashi and Lü Junchang in 2003. The name means 'Chinese bird mimic' and honors Dong Zhiming, who found the first fossils in 1997.1 2
仍有爭議: Scientists are not sure whether the herds of Sinornithomimus were family groups with adults protecting young, or if the young lived separately from adults while the adults were busy nesting.1