恐龍卡第 1610 張，共 2 027 張

Sclerocormus

名字的意思： “stiff trunk”1

吃：魚魚龍類三疊紀早期到三疊紀中期嚴格來說不是恐龍

Sclerocormus was an early marine reptile that lived in the sea, not a dinosaur. It had a very tiny head and a long tail without a fluke, making it look different from later ichthyosaurs.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

249 到 247 百萬年前4

三疊紀早期到三疊紀中期

化石發現地

Majiashan Quarry, Chaohu, Anhui Province, China1 4

長度

1.6 m (5.2 ft)2 3

體重

15 kg (33 lb)2

最高速度

時速約 29 公里（18 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 4 隻家貓一樣重

跟 3 隻家貓從鼻子接到尾巴一樣長跟 9 根香蕉頭尾相接一樣長跟 120 根香蕉一樣重能在 6.2 秒內游完一座大泳池（50 公尺）

Sclerocormus 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)

Sclerocormus 時速約 29 公里 (18 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

Sclerocormus had an extremely small head that was only about 6.25% of its total body length, much smaller than other early marine reptiles like Chaohusaurus.1

Its tail was very long, making up about 58% of its total length, and it did not have a fluke like later ichthyosaurs.1

Sclerocormus had a heavily built body with flattened, overlapping belly ribs that formed a tight basket, similar to hupehsuchians.1

It lived during the Early Triassic period, about 248 to 247 million years ago, soon after the end-Permian mass extinction.4 1

Sclerocormus is one of the earliest known ichthyosauriforms, and its discovery shows that these marine reptiles evolved quickly within the first million years of their history.1

This reptile had large eyes with scleral plates, which are bony rings that help support the eye, like in many ichthyosaurs.1

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

?How big was Sclerocormus?

Sclerocormus was about 1.6 metres (5.2 feet) long and weighed more than 15 kilograms (33 pounds).2

?What did Sclerocormus eat?

Sclerocormus was a suction feeder that used its narrow, toothless snout to suck in soft-bodied prey. Because its head and jaws were so small, it could only eat prey much smaller than itself.2

?Could Sclerocormus swim fast?

No, Sclerocormus was probably a slow swimmer. Its heavy build and body shape suggest it lived in shallow waters.2

?Is Sclerocormus a dinosaur?

No, Sclerocormus is not a dinosaur. It is an ichthyosauriform, a type of marine reptile that lived in the sea.2

給恐龍專家

學名: Sclerocormus
命名者: Jiang et al. 20164
類群: 魚龍類
科 / 演化支: Omphalosauridae4
分類: Ichthyosauromorpha4
岩石的年代: 249 到 247 百萬年 ()4
岩層: Nanlinghu4
國家: 中國4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Sclerocormus was named by Jiang and colleagues in 2016 based on a single fossil skeleton found in the Nanlinghu Formation in Anhui, China.4 1
仍有爭議: Scientists are not sure exactly what Sclerocormus ate, because it had no teeth, but they think it may have been a suction feeder.1