恐龍卡第 1306 張，共 2 027 張

Oksoko

名字的意思： “from Öksökö, a three-headed eagle in Altaic mythology”1 2

吃：每樣都來一點奇特的羽毛恐龍白堊紀晚期

Oksoko was a small, feathered dinosaur that lived in what is now Mongolia. It had only two fingers on each hand, which is very unusual for a meat-eating dinosaur. Oksoko probably used its beak to eat plants and small animals.2 5

生存年代

72 到 66 百萬年前5

白堊紀晚期

化石發現地

Bügiin Tsav and Guriliin Tsav, Nemegt Formation, Mongolia1 2

長度

2 m (6.6 ft)3 4

體重

31 kg 到 45 kg (68 到 99 lb)2

高度

1 m (3.3 ft)4

最高速度

時速約 45 公里（28 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 2 隻狗一樣重

跟 4 隻家貓從鼻子接到尾巴一樣長跟 11 根香蕉頭尾相接一樣長跟 11 隻家貓一樣重跟 9 顆西瓜一樣重跟 2.5 個幼兒園小朋友一樣重跟 1.5 個小學生一樣重能在 8 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Oksoko 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)

Oksoko 時速約 45 公里 (28 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

Oksoko had only two functional fingers on each hand, a rare feature among theropod dinosaurs.2

Fossils of at least six Oksoko individuals have been found, some preserved together in a resting pose with their heads tucked under their arms.2

Oksoko lived about 72 to 66 million years ago, during the Late Cretaceous period.5

The name Oksoko comes from a three-headed eagle in Altaic mythology, because the main fossil block contains three skulls.1 2

Oksoko was a type of oviraptorid, a group of feathered dinosaurs that were close relatives of birds.2

The specific name avarsan means 'rescued' in Mongolian, because the fossils were confiscated from poachers.1 2

Oksoko 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Oksoko 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。

給恐龍專家

學名: Oksoko
命名者: Funston et al. 20205
類群: 奇特的羽毛恐龍
科 / 演化支: Oviraptoridae5
分類: Theropoda > Oviraptorosauria5
岩石的年代: 72 到 66 百萬年 (Maastrichtian)5
岩層: Nemegt5
國家: 蒙古5
化石紀錄: The Paleobiology Database 收錄 3 筆5
發現: Oksoko was named in 2020 by paleontologists Gregory Funston and colleagues. The fossils were confiscated from poachers in Mongolia.1 2
仍有爭議: Scientists are still debating why Oksoko's arms became so reduced, and whether it used its two-fingered hands for foraging, nesting, or display.2