恐龍卡第 1927 張，共 2 027 張

Wumengosaurus

名字的意思： “Wumeng lizard, named after the Wumeng Mountain area in China”1

吃：肉海生爬蟲類三疊紀中期嚴格來說不是恐龍

Wumengosaurus was a small, long-bodied marine reptile that swam in the warm seas of what is now China during the Triassic Period. It had a long snout full of tiny, sharp teeth and probably hunted for small fish and shrimp. Even though it looked a bit like a dinosaur, it was actually a type of sauropterygian, a group that includes plesiosaurs.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

247 到 241 百萬年前4

三疊紀中期

化石發現地

Guizhou Province, southwestern China1 3

長度

0.955 到 1.305 m (3.1 到 4.3 ft)1

最高速度

時速約 12 公里（7 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 2.5 隻家貓從鼻子接到尾巴一樣長跟 7 根香蕉頭尾相接一樣長能在 15 秒內游完一座大泳池（50 公尺）

Wumengosaurus 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)

Wumengosaurus 時速約 12 公里 (7 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

Wumengosaurus had a very long body with short legs, making it look a bit like a swimming lizard.2

Its jaws were long and pointed, like a pair of tweezers, and held more than 45 tiny teeth.1

Scientists think Wumengosaurus was one of the earliest and most basic members of the eosauropterygian group, which later gave rise to the huge plesiosaurs.1 2

The first fossil of Wumengosaurus was found in the Guanling Formation, a layer of rock that was once the bottom of a shallow sea.1 3

A second species, Wumengosaurus rotundicarpus, was named in 2021 based on a fossil from Panzhou District in Guizhou.1

Wumengosaurus lived about 247 to 241 million years ago, during the Middle Triassic, not long after the biggest mass extinction in Earth's history.1 3

Wumengosaurus 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Wumengosaurus 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。

給恐龍專家

學名: Wumengosaurus
命名者: Jiang et al. 20084
類群: 海生爬蟲類
科 / 演化支: Eosauropterygia4
分類: Sauropterygia4
岩石的年代: 247 到 241 百萬年 ()4
岩層: Guanling4
國家: 中國4
化石紀錄: The Paleobiology Database 收錄 2 筆4
發現: Wumengosaurus was first described by scientists Jiang, Rieppel, Motani, and others in 2008, based on a fossil skeleton from the Guanling Formation in Guizhou, China.1 3
仍有爭議: Scientists are not sure exactly where Wumengosaurus fits on the family tree. Most studies place it as a basal eosauropterygian, but one study suggested it might be more closely related to ichthyosaurs.1