恐龍卡第 1142 張，共 2 027 張

Martharaptor

名字的意思： “Martha's thief, named after paleontologist assistant Martha C. Hayden”1

吃：植物奇特的羽毛恐龍白堊紀早期

Martharaptor was a feathered dinosaur that lived in what is now Utah during the Early Cretaceous. It was a therizinosauroid, a group of plant‑eating theropods with long claws and pot bellies. Its hands and feet were a mix of old and new features, making it a special link between early and later therizinosaurs.1 2

生存年代

137 到 133 百萬年前4

白堊紀早期

化石發現地

Hayden-Corbett Site, Yellow Cat Member of the Cedar Mountain Formation, about 8 miles southeast of Green River, Utah, USA1 2

長度

2.6 m (8.5 ft)3

體重

120 kg (265 lb)3

高度

1.1 m (3.6 ft)

估計值

最高速度

時速約 30 公里（19 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 6 隻狗一樣重

跟 2.5 隻狗從鼻子接到尾巴一樣長跟 14 根香蕉頭尾相接一樣長跟 24 顆西瓜一樣重跟 6 個幼兒園小朋友一樣重跟 4 個小學生一樣重能在 12 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Martharaptor 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)

Martharaptor 時速約 30 公里 (19 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

Martharaptor is known from a single partial skeleton that includes vertebrae, a shoulder blade, arm and leg bones, and several hand claws.2

Its hand claws were deep and strongly curved, with a big flexor tubercle for attaching strong muscles.2

The foot claws were narrow and strongly curved, and the first toe claw was smaller than the others.2

Martharaptor lived about 124 million years ago, during the early Aptian stage of the Early Cretaceous.2

The genus name honors Martha C. Hayden, who helped discover the fossil site and worked as assistant to three Utah state paleontologists.1 2

Its skeleton was found scattered in a small area, but all bones belong to a single individual.2

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

?What did Martharaptor eat?

Martharaptor was a plant‑eating dinosaur. It belonged to the therizinosauroid group, which are known to be herbivores.1 2

?How big was Martharaptor?

Scientists are not sure of its exact size because only a partial skeleton has been found. Its shoulder blade was about 15 centimetres (6 inches) long, suggesting it was a medium sized dinosaur.1

?Did Martharaptor have feathers?

Yes, Martharaptor was a feathered dinosaur. It belonged to the therizinosauroid group, which are known to have had feathers.1

?When did Martharaptor live?

Martharaptor lived about 124 million years ago, during the early Aptian stage of the Early Cretaceous.2

給恐龍專家

學名: Martharaptor
命名者: Senter et al. 20124
類群: 奇特的羽毛恐龍
科 / 演化支: Therizinosauroidea4
分類: Theropoda > Therizinosauria4
岩石的年代: 137 到 133 百萬年 (Valanginian)4
岩層: Cedar Mountain4
國家: 美國4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Martharaptor was named in 2012 by paleontologists Phil Senter, James Kirkland, and Donald DeBlieux. The skeleton was found at the Hayden-Corbett site in Utah, above the layer that contains the earlier therizinosaur Falcarius.1 2
仍有爭議: Scientists are not completely sure that Martharaptor is a therizinosauroid. The evidence is weak, and some features could also belong to other dinosaur groups.2