恐龍卡第 0001 張，共 2 027 張

Aardonyx

名字的意思： “Earth claw”1

吃：植物長脖子恐龍侏羅紀早期

Aardonyx was a dinosaur that lived in South Africa about 200 million years ago. It could walk on two legs or sometimes use all four legs, like a bridge between earlier dinosaurs and the giant long-necked sauropods. It ate plants and had leaf-shaped teeth for stripping leaves off branches.2

生存年代

201 到 193 百萬年前5

侏羅紀早期

化石發現地

Marc's Quarry on the farm Spion Kop 932, Senekal District, Free State, South Africa1

長度

8 m (26 ft)2

體重

1.5 公噸 (3,300 lb)2

高度

1.5 m (4.9 ft)2 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 1 台汽車一樣重

跟 8 隻狗從鼻子接到尾巴一樣長跟 44 根香蕉頭尾相接一樣長跟 75 隻狗一樣重跟 300 顆西瓜一樣重跟 79 個幼兒園小朋友一樣重跟 47 個小學生一樣重跟 3 隻北極熊一樣重能在 14 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Aardonyx 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)

Aardonyx 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

Aardonyx had narrow jaws that lacked fleshy cheeks, which was surprising because scientists thought wide jaws evolved before cheeks were lost.1

The name Aardonyx comes from Afrikaans 'aard' meaning Earth and Greek 'onyx' meaning claw, because many bones had a thick red coating of hematite.1

The only known fossils of Aardonyx are from two young individuals, not one full-grown dinosaur.2

Aardonyx could walk on two legs but also had features that helped it walk on all fours, like a special bump on its arm bone for strong muscles.1

Its foot bones show that the weight-bearing part shifted to the inside of the foot, a trait that later sauropods had.1

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

?How big was Aardonyx?

About 7 metres (23 feet) long. The only known fossils are from two young individuals that were still growing, so adults may have been a bit larger.2

?What did Aardonyx eat?

Aardonyx was a herbivore that ate leaves and other foliage. It had leaf-shaped teeth for stripping vegetation from branches.2

?Could Aardonyx walk on two legs?

Yes, it usually walked on two legs but could also drop to all fours. Its skeleton shows features of both bipedal and quadrupedal movement.2 4

?When did Aardonyx live?

It lived during the Early Jurassic, about 200 to 190 million years ago.2

?Where was Aardonyx found?

Its fossils were discovered in South Africa, in the Elliot Formation.4 2

?Why is Aardonyx important?

It helps show how two-legged dinosaurs evolved into giant four-legged sauropods. It had a mix of features from both groups.2 4

給恐龍專家

學名: Aardonyx
命名者: Yates et al. 20105
類群: 長脖子恐龍
科 / 演化支: Sauropodiformes5
分類: Sauropodomorpha5
岩石的年代: 201 到 193 百萬年 (Hettangian / Sinemurian)5
岩層: Elliot5
國家: 南非5
化石紀錄: The Paleobiology Database 收錄 1 筆5
發現: Aardonyx was named in 2009 by scientists Yates, Bonnan, Neveling, Chinsamy and Blackbeard. The fossils were found in South Africa and the species name 'celestae' honors Celeste Yates, who prepared many of the bones.2 1
仍有爭議: Scientists are still debating exactly how Aardonyx moved, because it shows a mix of two-legged and four-legged features.1