恐龍卡第 0358 張，共 2 027 張

Catutosaurus

名字的意思： “Catuto lizard”2

吃：肉魚龍類侏羅紀晚期到白堊紀早期嚴格來說不是恐龍

Catutosaurus was a fast-swimming marine reptile that lived in the Jurassic seas. It looked a bit like a dolphin but was actually an ichthyosaur, not a dinosaur. It had a long snout and strong flippers for chasing fish.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

149 到 143 百萬年前2

侏羅紀晚期到白堊紀早期

化石發現地

El Ministerio Quarry, Los Catutos, Neuquén Province, Argentina2

最高速度

時速約 46 公里（29 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)

Catutosaurus 時速約 46 公里 (29 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

Catutosaurus lived about 149 to 143 million years ago during the Late Jurassic period.2

Its fossils were found in the Vaca Muerta formation in Argentina, which is famous for its well-preserved marine reptiles.2

Catutosaurus had a mix of features: a skull like some ophthalmosaurids and a forefin like others, showing that these traits evolved separately.1

Its forefin had tightly packed polygonal bones and a broad connection between the upper arm and forearm bones.1

The name Catutosaurus comes from the Los Catutos area in Argentina where it was discovered.2

Catutosaurus is part of a group called ophthalmosaurids, which were the last ichthyosaurs to survive, living until about 94 million years ago.1

Catutosaurus 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Catutosaurus 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: Catutosaurus
命名者: Fernández et al. 20212
類群: 魚龍類
科 / 演化支: Ophthalmosauridae2
分類: Ichthyosauria > Ichthyosauromorpha2
岩石的年代: 149 到 143 百萬年 (Tithonian)2
岩層: Vaca Muerta2
國家: 阿根廷2
化石紀錄: The Paleobiology Database 收錄 1 筆2
發現: Catutosaurus was named in 2021 by Marta S. Fernández, Lisandro Campos, Erin E. Maxwell, and Alberto C. Garrido. The fossils were found in the Los Catutos area of Patagonia, Argentina.2 1
仍有爭議: Scientists are still debating exactly how Catutosaurus is related to other ophthalmosaurids. Its mix of features makes its place on the family tree unclear.1