恐龍卡第 1244 張，共 2 027 張

Natovenator

名字的意思： “swimming hunter”1

吃：魚迅猛龍類白堊紀晚期

Natovenator was a tiny dinosaur that could swim! It had a streamlined body like a diving bird and a long snout full of teeth for catching fish. This little hunter lived in the deserts of Mongolia during the Late Cretaceous.2 1

生存年代

84 到 72 百萬年前4

白堊紀晚期

化石發現地

Hermiin Tsav, Omnogovi Province, Mongolia2 1

長度

0.7 m (2.3 ft)1

體重

0.3 kg (1 lb)1

高度

0.29 m (1 ft)

估計值

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

牠有多大？

牠有多長？

牠有多高？

估計值

牠有多重？

跟 2.5 根香蕉一樣重

跟 4 根香蕉頭尾相接一樣長比一隻家貓還輕小到能從椅子底下走過去能在 24 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Natovenator 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)

Natovenator 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

Natovenator had a streamlined body, which is very rare for non-avian dinosaurs. Its ribs pointed backwards to make it more hydrodynamic, just like diving birds and mosasaurs.2 1

It had 13 teeth in its premaxilla (the front of the upper jaw), which is an unusually high number for a dromaeosaurid.2 1

Its snout was long and full of many small holes (neurovascular foramina), which may have helped it sense movement in the water.2 1

Natovenator belongs to a group called Halszkaraptorinae, which are dromaeosaurids that may have been semi-aquatic. This group includes Halszkaraptor from Mongolia.1 3

Its neck was long, like many diving birds today, which helped it catch fish quickly.1

The name Natovenator means 'swimming hunter' in Latin, because scientists think it was a good swimmer that hunted in water.1

The only known fossil of Natovenator was found in the Baruungoyot Formation, which is about 72 to 83 million years old.3 1

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

?How big was Natovenator?

About 0.7 metres (2.3 feet) long and weighed around 0.3 kilograms (0.66 pounds). That is roughly the size of a duck.1

?Could Natovenator swim?

Yes, scientists think it was a good swimmer. Its ribs pointed backwards to make its body streamlined like a diving bird, and its long neck helped it catch fish.2 1

?What did Natovenator eat?

It likely ate fish and other small prey in the water. Its many sharp teeth and long snout were good for catching slippery food.1 2

?When did Natovenator live?

It lived during the Late Cretaceous, about 72 to 83 million years ago, in what is now the Gobi Desert of Mongolia.1

迷思破解王

迷思： Some people think all dromaeosaurids were fast runners that lived only on land.

真相： Natovenator shows that some dromaeosaurids, like those in the Halszkaraptorinae group, were adapted for swimming and may have spent much of their time in water.1 2

給恐龍專家

學名: Natovenator
命名者: Lee et al. 20224
類群: 迅猛龍類
科 / 演化支: Dromaeosauridae4
分類: Theropoda > Dromaeosauridae4
岩石的年代: 84 到 72 百萬年 (Campanian)4
岩層: Baruungoyot4
國家: 蒙古4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Natovenator was named in 2022 by Sungjin Lee and colleagues based on a nearly complete skeleton found in Mongolia. The fossil was first mentioned in a 2019 abstract.1 2
仍有爭議: Scientists are still debating whether all halszkaraptorines were semi-aquatic, or if some were more terrestrial. Natovenator's streamlined body supports the swimming idea, but more fossils are needed to be sure.1 2