恐龍卡第 1110 張，共 2 027 張

Macrogryphosaurus

名字的意思： “big enigmatic lizard”1

吃：植物有喙的草食恐龍白堊紀晚期

Macrogryphosaurus was a big, gentle plant-eater that wandered the forests of ancient Argentina. It had a long neck and tail, and bony plates along its ribs that might have helped it breathe or stayed stiff. This dinosaur is the largest known member of its group, the elasmarian ornithopods.1

生存年代

90 到 86 百萬年前3

白堊紀晚期

化石發現地

Sierra Barrosa Formation, Neuquén, Patagonia, Argentina1 3

長度

5 到 6 m (16 到 20 ft)1

體重

300 kg (661 lb)1

高度

1.8 m (5.9 ft)

估計值

最高速度

時速約 41 公里（25 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 15 隻狗一樣重

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跟 60 顆西瓜一樣重跟 16 個幼兒園小朋友一樣重跟 9 個小學生一樣重能在 8.8 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Macrogryphosaurus 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)

Macrogryphosaurus 時速約 41 公里 (25 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

Macrogryphosaurus had bony plates along its ribs, called intercostal plates, which made its torso stiff and bird-like.1

It is the largest known elasmarian dinosaur, reaching about 6 metres (20 feet) long.1

Its name means 'big enigmatic lizard', because scientists were puzzled by its features.1

This dinosaur lived about 89 million years ago during the Late Cretaceous Period.1 2

Macrogryphosaurus had a long neck and a tail similar to a coelurosaur, a group of theropod dinosaurs, which is unusual for an ornithopod.1

Fossils of Macrogryphosaurus were discovered by a young boy named Rafael Moyano in 1999 near Lake Mari Menuco in Argentina.1

Only one nearly complete skeleton of Macrogryphosaurus has been found, so scientists are still learning about it.1

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

?How big was Macrogryphosaurus?

It was about 6 metres (20 feet) long, though one estimate says 5 metres (16 feet) and 300 kg (660 lb). It is the largest known elasmarian dinosaur.1

?What did Macrogryphosaurus eat?

It was a plant-eater, so it ate plants. The Paleobiology Database lists it as a ground-dwelling herbivore.3

?When did Macrogryphosaurus live?

It lived about 89 million years ago, during the Late Cretaceous Period, in what is now Argentina.1

?Why did Macrogryphosaurus have plates on its ribs?

Scientists are not sure. The plates, called intercostal plates, made its torso stiff and bird-like, but their exact purpose is still a mystery.1

迷思破解王

迷思： Some people think Macrogryphosaurus was a slow, heavy dinosaur.

真相： Actually, it was lightly built and graceful, with a slender body compared to many other big ornithopods.1

給恐龍專家

學名: Macrogryphosaurus
命名者: Calvo et al. 20073
類群: 有喙的草食恐龍
科 / 演化支: Elasmaria3
分類: Ornithischia > Ornithopoda > Iguanodontia3
岩石的年代: 90 到 86 百萬年 (Coniacian)3
岩層: Sierra Barrosa3
國家: 阿根廷3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: Macrogryphosaurus was discovered in 1999 by a boy named Rafael Moyano near Lake Mari Menuco in Argentina. Scientists Jorge Calvo, Juan Porfiri, and Fernando Novas named it in 2007.1
仍有爭議: Scientists are still debating how many species of Macrogryphosaurus existed, and whether some other ornithopod fossils belong to this genus.1