恐龍卡第 0611 張，共 2 027 張

Eotrachodon

名字的意思： “dawn rough tooth”1

吃：植物鴨嘴龍類白堊紀晚期

Eotrachodon was an early duck-billed dinosaur that lived in what is now Alabama, USA. It had a long snout and hundreds of teeth for chewing plants. This dinosaur helps scientists understand how duck-billed dinosaurs evolved.2

生存年代

86 到 84 百萬年前4

白堊紀晚期

化石發現地

Montgomery, Alabama, USA4 2

長度

4 到 5.1 m (13 到 17 ft)2

體重

640 kg (1,400 lb)3

高度

2 m (6.6 ft)

估計值

最高速度

時速約 36 公里（22 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 32 隻狗一樣重

跟 5 隻狗從鼻子接到尾巴一樣長跟 28 根香蕉頭尾相接一樣長跟 130 顆西瓜一樣重跟 34 個幼兒園小朋友一樣重跟 20 個小學生一樣重能在 10 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Eotrachodon 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)

Eotrachodon 時速約 36 公里 (22 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

Eotrachodon is the oldest known duck-billed dinosaur from eastern North America.2

Its name means 'dawn rough tooth' because it was an early hadrosaur with rough teeth.1

The only fossil found was a young animal that was still growing when it died.2

Eotrachodon lived about 83 to 84 million years ago during the Santonian stage.2

Its skull had a special three-part depression around the nostril, which is a unique feature.2

This dinosaur was found in marine rocks, meaning its body was washed into the sea after death.2

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

?How big was Eotrachodon?

About 4 to 5.1 metres (13 to 17 feet) long. This is based on the only known fossil, which was a young animal that was still growing.2

?What did Eotrachodon eat?

It ate plants. It had a long snout and hundreds of teeth for chewing tough plant material.1 2

?When did Eotrachodon live?

It lived about 83 to 84 million years ago during the Late Cretaceous period.1 2

?Where was Eotrachodon found?

It was found in Alabama, USA, in a marine rock layer called the Mooreville Chalk Formation. Its body was washed into the sea after death.1 2

給恐龍專家

學名: Eotrachodon
命名者: Prieto-Márquez et al. 20164
類群: 鴨嘴龍類
科 / 演化支: Hadrosauridae4
分類: Ornithischia > Ornithopoda > Iguanodontia > Hadrosauridae4
岩石的年代: 86 到 84 百萬年 (Santonian)4
岩層: Mooreville Chalk4
國家: 美國4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Eotrachodon was named in 2016 by Albert Prieto-Márquez, Gregory Erickson, and James Ebersole. The fossil was found in Montgomery, Alabama, in the Mooreville Chalk formation.4 2
仍有爭議: Scientists are not sure how big Eotrachodon grew because the only known fossil is from a juvenile.2