恐龍卡第 0661 張，共 2 027 張

Fona

名字的意思： “named after Fo'na, a creator figure in Chamorro stories from Guam and the Mariana Islands”1

吃：植物有喙的草食恐龍白堊紀晚期

Fona was a small, plant-eating dinosaur that lived about 99 million years ago in what is now Utah. It was about the size of a large dog and spent much of its time digging and living in underground burrows. Fona's fossils are surprisingly common because it often buried itself before it died.1 2

生存年代

100 到 94 百萬年前6

白堊紀晚期

化石發現地

Mussentuchit Member of the Cedar Mountain Formation, Utah, USA1 3

長度

最多 2.1 m (6.9 ft)2

體重

18.14 kg 到 22.68 kg (40 到 50 lb)4

高度

0.67 m (2.2 ft)

估計值

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？

估計值

牠有多重？

跟 6 隻家貓一樣重

跟 4 隻家貓從鼻子接到尾巴一樣長跟 12 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）

Fona 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)

Fona 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

Fona had strong arm and hip muscles, fused pelvic bones, and large hind legs that helped it dig burrows.1 2

Scientists think Fona may have dug like a springhare: scratching soil loose with its front claws and kicking it away with its back legs.2

Fona's closest relative, Oryctodromeus, also burrowed, and its burrows have been found in Idaho and Montana.1

Fona skeletons are often found complete, lying chest-down with legs spread, as if they died in their burrows.1

At least two Fona skeletons have been found intertwined, which matches the idea that they shared burrows.2

Fona lived in a warm, wet floodplain with many rivers, between a huge inland sea to the east and volcanoes to the west.1

The species name herzogae honors Lisa Herzog, the paleontology operations manager at the North Carolina Museum of Natural Sciences.1

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

?How big was Fona?

About the size of a large dog.1

?Did Fona live in burrows?

Yes, scientists think Fona spent at least part of its time underground in burrows, based on its anatomy and fossils.1 5

?What did Fona eat?

Fona was a plant-eating dinosaur.1

?When did Fona live?

Fona lived about 99 million years ago, during the mid-Cretaceous period.1

迷思破解王

迷思： All dinosaurs lived only above ground.

真相： Fona and a few other dinosaurs, like Oryctodromeus, spent part of their time in underground burrows.1 2

給恐龍專家

學名: Fona
命名者: Avrahami et al. 20246
類群: 有喙的草食恐龍
科 / 演化支: Thescelosauridae6
分類: Ornithischia6
岩石的年代: 100 到 94 百萬年 (Cenomanian)6
岩層: Cedar Mountain6
國家: 美國6
化石紀錄: The Paleobiology Database 收錄 3 筆6
發現: Fona was named in 2024 by paleontologists Haviv Avrahami, Lindsay Zanno, and colleagues from North Carolina State University and the North Carolina Museum of Natural Sciences. The first fossils were found starting in 2013 in the Mussentuchit Member of the Cedar Mountain Formation in Utah.1 3
仍有爭議: Scientists have not yet found the actual burrows of Fona, only the skeletons that suggest it lived underground.1