恐龍卡第 0062 張，共 2 027 張

Albertonectes

名字的意思： “Alberta swimmer”1

吃：肉蛇頸龍類白堊紀晚期嚴格來說不是恐龍

Albertonectes was a huge marine reptile that lived in the sea, not a dinosaur. It had an incredibly long neck, longer than a school bus, and swam with four flippers like paddles.1 2

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

84 到 72 百萬年前4

白堊紀晚期

化石發現地

Alberta, Canada, near Lethbridge1 2

長度

11.2 到 12.1 m (37 到 40 ft)1 2

體重

4.8 公噸 (10,600 lb)2

最高速度

時速約 22 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？

牠有多重？

跟 3 台汽車一樣重

跟 2.5 台汽車排成一排一樣長跟 67 根香蕉頭尾相接一樣長大約跟一頭大象一樣重跟 960 顆西瓜一樣重跟 6 整班小學生一樣重跟 11 隻北極熊一樣重能在 8.2 秒內游完一座大泳池（50 公尺）

Albertonectes 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)

Albertonectes 時速約 22 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

Albertonectes had 76 neck bones, more than any other known animal. Its neck was about 7 metres (23 feet) long.1 2

Its fossils were discovered by accident in 2007 during ammolite mining. An excavator broke part of the skeleton, and some stomach stones were lost.1 2

Albertonectes lived in the Western Interior Seaway, a huge inland sea that stretched from the Gulf of Mexico to the Arctic Ocean.2

No skull of Albertonectes has ever been found, so scientists can only guess what its head looked like based on other elasmosaurs.1 2

Over 97 stomach stones were found with the skeleton, but they are too small to help with buoyancy or digestion. Scientists are still not sure why plesiosaurs swallowed stones.1 2

Albertonectes was a plesiosaur, not a dinosaur. Dinosaurs lived on land, while plesiosaurs were air-breathing reptiles that lived in the sea.2

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

?How big was Albertonectes?

Albertonectes was about 12.1 metres (40 feet) long and weighed around 4.8 metric tons (5.3 short tons). Its neck alone was about 7 metres (23 feet) long.1 2

?Was Albertonectes a dinosaur?

No, Albertonectes was a plesiosaur, a marine reptile that lived in the sea. Dinosaurs lived on land.2

?What did Albertonectes eat?

Scientists think Albertonectes ate small fish and crustaceans. Its small, slender teeth were not for attacking large prey.2

?How many neck bones did Albertonectes have?

Albertonectes had 76 neck bones, more than any other known animal. That is why its neck was so long.1 2

?When did Albertonectes live?

Albertonectes lived about 73.5 million years ago, during the Late Cretaceous period.1

?Could Albertonectes swim?

Yes, Albertonectes was a strong swimmer. It used its four paddle-like flippers to move through the water.1 2

迷思破解王

迷思： Albertonectes was a dinosaur.

真相： Albertonectes was a plesiosaur, a marine reptile that lived in the ocean, not a dinosaur. Dinosaurs were land animals.2

給恐龍專家

學名: Albertonectes
命名者: Kubo et al. 20124
類群: 蛇頸龍類
科 / 演化支: Elasmosauridae4
分類: Plesiosauria > Elasmosauridae > Sauropterygia4
岩石的年代: 84 到 72 百萬年 (Campanian)4
岩層: Bearpaw Shale4
國家: 加拿大4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: The only known skeleton was found in 2007 by an ammolite mining company near Lethbridge, Alberta, Canada. It was named Albertonectes vanderveldei in 2012 by paleontologist Tai Kubo and his team.1 2
仍有爭議: Scientists are not sure why Albertonectes swallowed so many stomach stones, since they are too small to help with buoyancy or digestion.2