恐龍卡第 1675 張，共 2 027 張

Sinornithoides

名字的意思： “Chinese bird form”1

吃：肉迅猛龍類白堊紀早期

Sinornithoides was a tiny, bird-like dinosaur that lived about 113 million years ago. It was probably a fast hunter of small prey like insects. One fossil was found curled up like a sleeping bird, with its snout tucked under its arm.1 2

生存年代

113 到 110 百萬年前4

白堊紀早期

化石發現地

Inner Mongolia, China (Ejinhoro Formation)1 4

長度

1 到 1.1 m (3.3 到 3.6 ft)1

體重

2.5 kg (6 lb)1

高度

0.3 m (1 ft)3

最高速度

時速約 26 公里（16 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？

牠有多重？

跟 21 根香蕉一樣重

跟 2 隻家貓從鼻子接到尾巴一樣長跟 6 根香蕉頭尾相接一樣長大約跟一隻家貓一樣重跟 21 根香蕉一樣重小到能從椅子底下走過去能在 14 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Sinornithoides 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)

Sinornithoides 時速約 26 公里 (16 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

Sinornithoides had a sickle claw on its second toe, like other troodontids, which it may have used to grip prey.1

The fossil was preserved in a sleeping pose, with its snuck under one hand, just like a modern bird resting.1

Its skull was long and pointed, but the head was short compared to its body length.1

The teeth on the front of its upper jaw had no serrations, but the back teeth had small serrations only on one edge.1

Sinornithoides had a furcula (wishbone) and a basket of fifteen pairs of belly ribs called gastralia.1

Troodontids like Sinornithoides had some of the highest brain-to-body sizes among non-bird dinosaurs, meaning they were probably smart.1

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

?How big was Sinornithoides?

About 1 metre long, and weighed around 2.5 kilograms. That is about the size of a large chicken.1 3

?What did Sinornithoides eat?

It probably ate invertebrates and other small prey, like insects and lizards.1

?Was Sinornithoides a dinosaur?

Yes, it was a small, bird-like theropod dinosaur from the Early Cretaceous period.1

?Did Sinornithoides have feathers?

The sources do not mention feathers directly, but as a troodontid closely related to birds, it likely had feathers. Many troodontid fossils show evidence of feathers.1

給恐龍專家

學名: Sinornithoides
命名者: Russell and Dong 19944
類群: 迅猛龍類
科 / 演化支: Troodontidae4
分類: Theropoda > Troodontidae4
岩石的年代: 113 到 110 百萬年 (Albian)4
岩層: Zhonggou, Ejinhoro4
國家: 中國4
化石紀錄: The Paleobiology Database 收錄 2 筆4
發現: A Chinese-Canadian expedition found the nearly complete skeleton in 1988 near Huamuxiao, in the Ordos Basin of Inner Mongolia. Dale Russell and Dong Zhiming named it Sinornithoides youngi in 1993/1994, honoring paleontologist Yang Zhongjian.1 2