恐龍卡第 1488 張，共 2 027 張

Protohadros

名字的意思： “first hadrosaur”1

吃：植物有喙的草食恐龍白堊紀晚期

Protohadros was an early duck-billed dinosaur that lived about 95 million years ago. It had a special downward-curved snout for munching on low-growing plants. This dinosaur is one of the oldest hadrosaurs ever found!2 1

生存年代

100 到 94 百萬年前4

白堊紀晚期

化石發現地

Texas, USA4 1

長度

6 m (20 ft)1

高度

1.8 m (5.9 ft)

估計值

最高速度

時速約 35 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

跟 6 隻狗從鼻子接到尾巴一樣長跟 33 根香蕉頭尾相接一樣長能在 10 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Protohadros 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)

Protohadros 時速約 35 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

Protohadros is the oldest definite hadrosaurid, or duck-billed dinosaur, known to science.2

Its name means 'first hadrosaur' because it lived so early in hadrosaur evolution.1

This dinosaur had a downward-pointing muzzle, which scientists think helped it eat plants close to the ground.2

Protohadros had a mix of primitive and advanced skull features, showing a step in the evolution of chewing ability.2

Its fossils were found in the Woodbine Formation of Texas, which was a delta environment during the Cretaceous.2

The only known species is Protohadros byrdi, named after the person who discovered it.1

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

?How big was Protohadros?

It was a medium sized dinosaur, about 6 to 8 metres (20 to 26 feet) long.3 1

?What did Protohadros eat?

It was an herbivore that ate low-growing plants, probably in floodplains or deltas. It may have also eaten aquatic plants.3 2

?When did Protohadros live?

It lived during the Late Cretaceous period, about 99 to 94 million years ago.1 3

?Where was Protohadros found?

Its fossils were found in the Woodbine Formation of Texas, USA.3 1

給恐龍專家

學名: Protohadros
命名者: Head 19984
類群: 有喙的草食恐龍
科 / 演化支: Hadrosauroidea4
分類: Ornithischia > Ornithopoda > Iguanodontia4
岩石的年代: 100 到 94 百萬年 (Cenomanian)4
岩層: Lewisville4
國家: 美國4
化石紀錄: The Paleobiology Database 收錄 4 筆4
發現: Protohadros was named by paleontologist J. J. Head in 1998, based on a partial skull and some bones from the Woodbine Formation in Texas.4 2
仍有爭議: Scientists debate whether hadrosaurs first evolved in North America or Asia, and Protohadros is a key piece of that puzzle.2