恐龍卡第 0802 張，共 2 027 張

Hesperornithoides

名字的意思： “western bird form”1

吃：肉迅猛龍類侏羅紀晚期到白堊紀早期

Hesperornithoides was a small, bird-like dinosaur that lived during the Late Jurassic period. It was a troodontid, a group of smart, fast predators with big brains. This dinosaur was only about as long as a cat, but it was a fierce hunter of insects and small animals.1 4

生存年代

155 到 143 百萬年前4

侏羅紀晚期到白堊紀早期

化石發現地

Jimbo Quarry, near Douglas, Wyoming, USA1 4

長度

0.89 到 1 m (2.9 到 3.3 ft)1

高度

0.39 m (1.3 ft)

估計值

最高速度

時速約 24 公里（15 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 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小到能從椅子底下走過去能在 15 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Hesperornithoides 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)

Hesperornithoides 時速約 24 公里 (15 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

Hesperornithoides was nicknamed 'Lori' before it was officially named in 2019.1

Its skeleton was discovered by accident in 2001 while a field crew was digging up a much larger dinosaur called Supersaurus.1

The fossil was found in a muddy sandstone layer that was once a wetland or lake environment.1

Hesperornithoides lived during the Late Jurassic, about 154 to 143 million years ago, in what is now Wyoming.4

This dinosaur had keratin sheaths on its claws, which are rarely preserved in fossils.1

Hesperornithoides was a troodontid, a group of dinosaurs closely related to birds, and its discovery helped show that bird-like dinosaurs lived much earlier than some scientists thought.1

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

?How big was Hesperornithoides?

About 89 centimetres (35 inches) long, roughly the size of a turkey or a cat.1 2

?Could Hesperornithoides fly?

No. It had wing feathers, but they were too small for flight.3

?What did Hesperornithoides eat?

It was a carnivore that likely hunted insects and small animals.1

?When was Hesperornithoides discovered?

In 2001, by accident while a field crew was digging up a Supersaurus in Wyoming.1 3

給恐龍專家

學名: Hesperornithoides
命名者: Hartman et al. 20194
類群: 迅猛龍類
科 / 演化支: Troodontidae4
分類: Theropoda > Troodontidae4
岩石的年代: 155 到 143 百萬年 (Kimmeridgian / Tithonian)4
岩層: Morrison4
國家: 美國4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: The skeleton was found in 2001 by a field crew from the Tate Geological Museum led by William Wahl, while they were excavating a Supersaurus. It was named Hesperornithoides miessleri in 2019 by Scott Hartman and colleagues.1
仍有爭議: Scientists are not sure if the single known specimen was an adult or a subadult, which affects estimates of its full adult size.1