恐龍卡第 0895 張，共 2 027 張

Jabalisaurus

名字的意思： “javelin lizard, after an ancient Mexican javelin called an atlatl”1

吃：肉魚龍類侏羅紀晚期嚴格來說不是恐龍

Jabalisaurus was a fast-swimming marine reptile that lived in the sea during the Late Jurassic. It looked a bit like a dolphin but had a long snout and big eyes. It hunted fish and squid in warm, shallow waters.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

152 到 149 百萬年前3

侏羅紀晚期

化石發現地

Mexico (Coahuila) and Germany1 2

長度

3 到 4 m (9.8 到 13 ft)2

最高速度

時速約 48 公里（30 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 隻狗從鼻子接到尾巴一樣長跟 22 根香蕉頭尾相接一樣長能在 3.8 秒內游完一座大泳池（50 公尺）

Jabalisaurus 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)

Jabalisaurus 時速約 48 公里 (30 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

The first Jabalisaurus fossil was thought to be an Ophthalmosaurus for many years.1

Its name means 'javelin lizard' because ancient Mexican people used a throwing tool called an atlatl, like a javelin.1

One specimen from Germany is a complete skeleton with soft tissue still preserved.1

Jabalisaurus had a very large eye socket, making its eyes big for seeing in dim water.2

Its bones were made of hydroxyapatite, the same mineral that makes our teeth hard.2

It gave birth to live babies instead of laying eggs, like modern dolphins.2

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

?How big was Jabalisaurus?

No exact size is given in the sources, but it was an ichthyosaur about the size of a dolphin. Its skull had a large eye socket, and its snout was slender.1 3

?What did Jabalisaurus eat?

It was a carnivore that hunted fish and squid in warm, shallow seas.3

?Is Jabalisaurus a dinosaur?

No, it is an ichthyosaur, a type of marine reptile that lived in the sea, not a dinosaur.1

?Where was Jabalisaurus found?

Fossils have been found in Mexico and Germany, in Late Jurassic rocks.1

迷思破解王

迷思： Some people think Jabalisaurus was a dinosaur.

真相： Jabalisaurus was an ichthyosaur, a marine reptile that swam in the ocean. It was not a dinosaur.1

給恐龍專家

學名: Jabalisaurus
命名者: Barrientos-Lara and Alvarado-Ortega 20213
類群: 魚龍類
科 / 演化支: Ophthalmosauridae3
分類: Ichthyosauria > Ichthyosauromorpha3
岩石的年代: 152 到 149 百萬年 (Kimmeridgian)3
岩層: La Casita3
國家: 墨西哥3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: Scientists Barrientos-Lara and Alvarado-Ortega named Jabalisaurus in 2021. The first fossil was found in the La Casita Formation in Coahuila, Mexico.2
仍有爭議: Scientists still debate whether the German species Jabalisaurus tethyensis is a separate species or the same as the Mexican one.1