恐龍卡第 1568 張，共 2 027 張

Sachicasaurus

名字的意思： “Sáchica lizard”1

吃：肉蛇頸龍類白堊紀早期嚴格來說不是恐龍

Sachicasaurus was a huge marine reptile that swam in the warm seas of what is now Colombia. It was a pliosaur, a type of short-necked plesiosaur, and one of the biggest predators of its time. With a skull longer than a person, it used its sharp teeth to catch fish and other sea creatures.2 1

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

126 到 113 百萬年前3

白堊紀早期

化石發現地

Vereda Arrayan, Sáchica, Boyacá, Colombia1

長度

10 到 10.35 m (33 到 34 ft)2

體重

10.3 公噸到 12.8 公噸 (22,700 到 28,200 lb)2

最高速度

時速約 19 公里（12 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 2 頭大象一樣重

跟 2.5 台汽車排成一排一樣長跟 58 根香蕉頭尾相接一樣長跟 9 台汽車一樣重跟 2600 顆西瓜一樣重跟 16 整班小學生一樣重跟 28 隻北極熊一樣重能在 9.5 秒內游完一座大泳池（50 公尺）

Sachicasaurus 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)

Sachicasaurus 時速約 19 公里 (12 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

Sachicasaurus had a very short lower jaw joint, with only 17 to 18 teeth on each side, while other pliosaurs had 25 to 40.2

The only known skeleton is almost complete, but it is missing the tip of the tail and some fin bones.2

Its skull was more than 2 metres (6.6 feet) long, as big as a small car.1

Sachicasaurus lived about 130 to 120 million years ago, during the Early Cretaceous period.2

The fossil was found in an old gypsum quarry, and an ammonite shell was found in the rocks just above it, helping to date the animal.1

Sachicasaurus is closely related to another Colombian pliosaur, 'Kronosaurus' boyacensis, and may belong to the same group.1

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

?How big was Sachicasaurus?

About 10 to 10.35 metres (32.8 to 34.0 feet) long and weighed 10.3 to 12.8 metric tons (11.4 to 14.1 short tons).2

?What did Sachicasaurus eat?

It ate fish and other sea creatures, using its sharp teeth to catch them.2

?When did Sachicasaurus live?

It lived about 130 to 120 million years ago, during the Early Cretaceous period.2

?Where was Sachicasaurus found?

Its fossil was found in an old gypsum quarry near Sáchica, Boyacá, Colombia.2 1

?Is Sachicasaurus a dinosaur?

No, it is a pliosaur, a type of marine reptile called a plesiosaur, not a dinosaur.2

?How fast could Sachicasaurus swim?

Nobody knows for sure, but as a pliosaur with flippers, it was probably a fast swimmer.2

給恐龍專家

學名: Sachicasaurus
命名者: Páramo-Fonseca et al. 20183
類群: 蛇頸龍類
科 / 演化支: Pliosauridae3
分類: Plesiosauria > Pliosauridae > Sauropterygia3
岩石的年代: 126 到 113 百萬年 (Barremian / Aptian)3
岩層: Paja3
國家: 哥倫比亞3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: The fossil was found in 2013 by a team from the Universidad Nacional de Colombia and the oil company ECOPETROL. It was named Sachicasaurus vitae in 2018 by Páramo-Fonseca and colleagues.1 3
仍有爭議: Scientists are not sure if Sachicasaurus is a separate genus or if it should be placed in the same genus as 'Kronosaurus' boyacensis.1