恐龍卡第 1789 張，共 2 027 張

Thaumatodracon

名字的意思： “wonder dragon”1

吃：肉蛇頸龍類侏羅紀早期嚴格來說不是恐龍

Thaumatodracon was a short-necked plesiosaur that lived in the Early Jurassic seas. It had a big head and four flippers to swim after fish and squid. This marine reptile was a top predator in its ocean home.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

200 到 193 百萬年前4

侏羅紀早期

化石發現地

Lyme Regis, Dorset, England, UK1

長度

6.5 m (21 ft)2 3

體重

2 公噸 (4,400 lb)2

最高速度

時速約 25 公里（16 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 1.5 台汽車一樣重

跟 6 隻狗從鼻子接到尾巴一樣長跟 36 根香蕉頭尾相接一樣長跟 100 隻狗一樣重跟 400 顆西瓜一樣重跟 2.5 整班小學生一樣重跟 4 隻北極熊一樣重能在 7.2 秒內游完一座大泳池（50 公尺）

Thaumatodracon 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)

Thaumatodracon 時速約 25 公里 (16 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

Thaumatodracon is known from a partial skeleton that includes a complete skull, lower jaw, and neck bones.1

It was named in 2017 by scientists Adam Smith and Ricardo Araújo.4

The species name wiedenrothi honors Kurt Wiedenroth, the amateur fossil hunter who found the specimen in 1969.1

Thaumatodracon belongs to a group called Rhomaleosauridae, which were short-necked plesiosaurs with large heads.4

It lived during the Sinemurian stage of the Early Jurassic, about 199 to 193 million years ago.4

The fossil was found in the Black Ven Mudstone Member of the Charmouth Mudstone Formation in Lyme Bay.1

Thaumatodracon 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Thaumatodracon 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: Thaumatodracon
命名者: Smith and Araújo 20174
類群: 蛇頸龍類
科 / 演化支: Rhomaleosauridae4
分類: Plesiosauria > Sauropterygia4
岩石的年代: 200 到 193 百萬年 (Sinemurian)4
國家: 英國4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: The only known fossil of Thaumatodracon was discovered in early 1969 by amateur fossil hunter Kurt Wiedenroth on the coast between Lyme Regis and Charmouth, England. It was later bought by the Niedersächsisches Landesmuseum Hannover and studied by Smith and Araújo, who named it in 2017.1
仍有爭議: Scientists are not sure if the two triangular processes on the base of the skull are real features or just damage from fossilization.1