恐龍卡第 0737 張，共 2 027 張

Gondwananectes

名字的意思： “Gondwana swimmer”1

吃：肉蛇頸龍類侏羅紀中期嚴格來說不是恐龍

Gondwananectes was a medium-sized plesiosaur that swam in the warm seas of the Jurassic period. It had a long neck, a short tail, and four flippers that helped it glide through the water like a sea turtle. This marine reptile lived about 170 million years ago in what is now Chile.1 3

趣味小知識：這種海生爬蟲類在海裡游泳的時候，恐龍正在陸地上走路。大家都叫牠們恐龍，但牠們其實是爬蟲類的另一個分支。

生存年代

171 到 168 百萬年前3

侏羅紀中期

化石發現地

Ojo Opache locality, Quehuita Formation, Antofagasta Region, northern Chile1 3

長度

1.5 到 2 m (4.9 到 6.6 ft)1

最高速度

時速約 23 公里（14 英里）

游泳, 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？

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能在 7.8 秒內游完一座大泳池（50 公尺）

Gondwananectes 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)

Gondwananectes 時速約 23 公里 (14 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

Gondwananectes is one of the oldest plesiosaurs ever found in the southern supercontinent Gondwana, which is why it got its name.1

The only known fossil of Gondwananectes was discovered in 2014 by Osvaldo Rojas, a museum director, and his team.1

Scientists originally thought some of its bones were part of the hips, but later preparation showed they were actually from the shoulder area.1

Gondwananectes had heart-shaped neck vertebrae, which is a unique feature not seen in other plesiosaurs.2

The fossil of Gondwananectes was found scattered in pieces, but scientists were able to put it back together to study it.1

Gondwananectes lived during the Bajocian age of the Middle Jurassic, about 170 to 168 million years ago.3

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

?How big was Gondwananectes?

It was about 1.5 to 2 metres (4.9 to 6.6 feet) long, which is roughly the size of a small dolphin.1

?What did Gondwananectes eat?

It was a carnivore, meaning it ate meat, probably fish and other small sea creatures.3

?Is Gondwananectes a dinosaur?

No, it is not a dinosaur. It is a plesiosaur, a type of marine reptile that lived in the ocean.1

給恐龍專家

學名: Gondwananectes
命名者: Otero et al. 20263
類群: 蛇頸龍類
科 / 演化支: Plesiosauroidea3
分類: Plesiosauria > Sauropterygia3
岩石的年代: 171 到 168 百萬年 (Bajocian)3
岩層: Quehuita3
國家: 智利3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: Gondwananectes was named in 2026 by Rodrigo Otero and colleagues. The fossil was found in 2014 by Osvaldo Rojas near Calama, Chile, and is now kept at the Museum of Natural and Cultural History of the Atacama Desert.1
仍有爭議: Scientists are still unsure about the exact size of Gondwananectes because only a partial skeleton has been found. The total length is estimated between 1.5 and 2 metres.1