恐龍卡第 0772 張，共 2 027 張

Haestasaurus

名字的意思： “Haesta's lizard, named after a chieftain of the Hastings area”1

吃：植物長脖子恐龍白堊紀早期

Haestasaurus was a huge, long-necked dinosaur that munched plants in Early Cretaceous England. It is famous for its arm bones and a piece of fossilized skin, which was the first dinosaur skin ever found by scientists!4 2

生存年代

139 到 133 百萬年前4

白堊紀早期

化石發現地

Near Hastings, East Sussex, southeast England, United Kingdom4 1

最高速度

時速約 15 公里（9 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)

Haestasaurus 時速約 15 公里 (9 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

Haestasaurus is known from a left upper arm bone (humerus), a forearm bone (ulna), a radius, and a skin impression. The skin was the first dinosaur skin ever recognized by science.1 2

Scientists created the new name Haestasaurus in 2015 because the old name Pelorosaurus was used for different bones in earlier studies.1

The fossils come from the Hastings Beds Group, which are about 139 to 133 million years old (Early Cretaceous).4

Haestasaurus had a very thick and strong ulna (forearm bone) but a slim radius next to it. That unusual combination helps scientists tell it apart from other sauropods.1

The upper arm bone had a special hook-like bump on its lower inner corner. This bump is a unique feature not seen in any other sauropod.1

Haestasaurus is classified as a macronarian, a group of sauropods that includes the huge titanosaurs. But scientists are not sure if it was a very early titanosaur or a close cousin.1

The skin impression shows small, round scales. This was the first direct evidence that sauropods had scaly skin, not feathers.2

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

?How big was Haestasaurus?

Scientists are not sure of its total size because only a forelimb is known. The upper arm bone (humerus) is 599 millimetres (about 60 cm) long, the ulna 421 millimetres, and the radius 404 millimetres.3

?What did Haestasaurus eat?

Haestasaurus was a herbivore, meaning it ate plants. It was a long-necked sauropod that munched on vegetation in Early Cretaceous England.3

?Did Haestasaurus have feathers?

No, Haestasaurus had scaly skin, not feathers. Its fossilized skin shows small, round, hexagonal scales, and it was the first dinosaur skin ever found by scientists.3 1

給恐龍專家

學名: Haestasaurus
命名者: Upchurch et al. 20154
類群: 長脖子恐龍
科 / 演化支: Eusauropoda4
分類: Sauropodomorpha > Sauropoda4
岩石的年代: 139 到 133 百萬年 (Berriasian / Valanginian)4
岩層: Hastings Beds4
國家: 英國4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: The fossils were discovered in 1852 near Hastings, England. The species was first named Pelorosaurus becklesii by Gideon Mantell in 1852, but later moved to a new genus, Haestasaurus, by Paul Upchurch and colleagues in 2015.1
仍有爭議: Scientists are not sure whether Haestasaurus was a very early member of the titanosaur group or a different type of macronarian sauropod.1