恐龍卡第 0991 張，共 2 027 張

Krzyzanowskisaurus

名字的意思： “Stan Krzyżanowski's lizard”1

吃：植物有喙的草食恐龍三疊紀晚期

Krzyzanowskisaurus was a small, plant-eating reptile that lived during the Late Triassic period. It is known only from its teeth, which have a special ridge called a cingulum that might mean it was an early relative of dinosaurs like Stegosaurus and Triceratops.1

生存年代

237 到 206 百萬年前2

三疊紀晚期

化石發現地

Arizona and New Mexico, USA1 2

最高速度

時速約 41 公里（25 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)

Krzyzanowskisaurus 時速約 41 公里 (25 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

Krzyzanowskisaurus is known only from its teeth, not from any bones or skeletons.1

Its teeth have a special ridge called a cingulum, which is a feature seen in early ornithischian dinosaurs.1

Scientists are not sure if Krzyzanowskisaurus was a true dinosaur or a close relative called a pseudosuchian.1

The name was changed from Revueltosaurus hunti in 2005 because the teeth looked different from other Revueltosaurus fossils.1

Its teeth are used as index fossils to help date rocks from the St. Johnsian land-vertebrate faunachron.1

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

迷思破解王

迷思： Krzyzanowskisaurus is definitely a dinosaur.

真相： Some scientists think it might not be a dinosaur at all, but a pseudosuchian reptile, because its teeth are similar to those of Revueltosaurus, which is not a dinosaur.1

給恐龍專家

學名: Krzyzanowskisaurus
命名者: Heckert 20052
類群: 有喙的草食恐龍
科 / 演化支: Ornithischia2
分類: Ornithischia2
岩石的年代: 237 到 206 百萬年 (Carnian / Norian)2
岩層: Chinle2
國家: 美國2
化石紀錄: The Paleobiology Database 收錄 4 筆2
發現: The teeth were first described by Heckert in 2002 as Revueltosaurus hunti, but in 2005 Heckert gave them a new genus name Krzyzanowskisaurus after Stan Krzyżanowski.1
仍有爭議: Scientists still debate whether Krzyzanowskisaurus was a true ornithischian dinosaur or a pseudosuchian reptile.1