恐龍卡第 1657 張，共 2 027 張

Silesaurus

名字的意思： “Silesian lizard, after the Silesia region of Poland”1

吃：植物有喙的草食恐龍三疊紀晚期

Silesaurus was a small, beaked plant-eater that lived about 230 million years ago in what is now Poland. It looked a bit like a dinosaur but was actually a close cousin, not a true dinosaur. Silesaurus had a horny beak on its lower jaw and weak front legs.1 2

生存年代

234 到 227 百萬年前4

三疊紀晚期

化石發現地

Krasiejów near Opole, southern Poland1 2

長度

2 到 2.5 m (6.6 到 8.2 ft)2

體重

15 kg 到 25 kg (33 到 55 lb)2

高度

0.5 到 0.7 m (1.6 到 2.3 ft)2

最高速度

時速約 39 公里（24 英里）

跑步, 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？

牠有多高？

牠有多重？

跟 6 隻家貓一樣重

跟 2.5 隻狗從鼻子接到尾巴一樣長跟 14 根香蕉頭尾相接一樣長跟 5 顆西瓜一樣重能在 9.2 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Silesaurus 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)

Silesaurus 時速約 39 公里 (24 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

Silesaurus had a beak on its lower jaw, similar to later plant-eating dinosaurs like Lesothosaurus, but without the extra predentary bone.2

It had only 11 to 12 teeth in each dentary and maxilla, a low number compared to other early archosaurs.2

Its front limbs were long and slender, but weak, which scientists think is a special feature of this animal.1

Silesaurus had 25 presacral vertebrae, with 9 to 11 in the neck, and the last two back bones were fused to the hip bones.2

The first toe on its foot was reduced to a tiny metatarsal bone that probably did not have any toe bones.2

Silesaurus is the earliest known herbivore among the mesotarsal archosaurs, a group that includes dinosaurs and their relatives.2

Its fossils were found in a clay pit in Krasiejów, Poland, alongside remains of metoposaurs, phytosaurs, and aetosaurs.2

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

?Was Silesaurus a dinosaur?

No, Silesaurus was not a dinosaur. It was a dinosauriform, a close cousin of dinosaurs.3

?How big was Silesaurus?

Silesaurus was about 2.3 metres long. It was lightly built and probably fast and agile.3

?What did Silesaurus eat?

Silesaurus probably ate both plants and insects. Scientists found beetle remains in fossil dung that may belong to Silesaurus, suggesting it pecked insects off the ground like modern birds.3

?Did Silesaurus have feathers?

Nobody knows for sure. The fossils do not preserve feathers, so scientists cannot tell if Silesaurus had them.3

?When did Silesaurus live?

Silesaurus lived about 230 million years ago during the Late Triassic period.3

?Where was Silesaurus found?

Silesaurus fossils were found in a clay pit in Krasiejów, Poland.3

迷思破解王

迷思： Silesaurus is often called a dinosaur.

真相： Silesaurus is not a true dinosaur. It is a close relative that belongs to the group Dinosauriformes, just outside Dinosauria.1 2

給恐龍專家

學名: Silesaurus
命名者: Dzik 20034
類群: 有喙的草食恐龍
科 / 演化支: Silesauridae4
分類: Ornithischia4
岩石的年代: 234 到 227 百萬年 (Carnian)4
岩層: Drawno Beds, Grabowa4
國家: 波蘭4
化石紀錄: The Paleobiology Database 收錄 3 筆4
發現: Silesaurus was named by Polish paleontologist Jerzy Dzik in 2003. The fossils were found in a clay pit near Opole, Poland, in rocks from the Late Triassic period.1 4
仍有爭議: Scientists are not sure whether Silesaurus is an early member of the ornithischian dinosaur lineage, a common ancestor of both ornithischians and prosauropods, or a separate line that evolved plant-eating on its own.2