恐龍卡第 0597 張，共 2 027 張

Eogranivora

名字的意思： “early seed-eater”1

吃：植物早期鳥類白堊紀早期

Eogranivora was a small, toothless bird that lived in ancient China. It loved to eat seeds, and we know this because scientists found seeds and gizzard stones inside its fossil!1

生存年代

126 到 120 百萬年前3

白堊紀早期

化石發現地

Dawangzhangzi, Liaoning Province, China3 1

最高速度

時速約 27 公里（17 英里）

飛行, 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)

Eogranivora 時速約 27 公里 (17 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

Eogranivora is the only Early Cretaceous ornithuromorph bird that has direct evidence of eating seeds.1

It had no teeth at all, which is unusual for a bird from its time. Many other early birds still had small teeth.1

Eogranivora had no hallux, the backward-pointing toe that most birds use to perch. This suggests it lived on the ground.1

Its fossil was first thought to be a different bird called Hongshanornis, but scientists later realized it was a new species.2

The fossil preserves at least 15 seeds inside the crop area, each about 4.3 mm long.1

Eogranivora lived about 125 million years ago during the Early Cretaceous period.1

Eogranivora 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Eogranivora 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: Eogranivora
命名者: Zheng et al. 20183
類群: 早期鳥類
科 / 演化支: Ornithuromorpha3
分類: Theropoda > Avialae3
岩石的年代: 126 到 120 百萬年 (Barremian / Aptian)3
岩層: Yixian3
國家: 中國3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: Eogranivora was named in 2018 by Zheng Xiaoting and colleagues. The fossil was found at Dawangzhangzi in China and was originally mistaken for Hongshanornis.2 1
仍有爭議: Scientists are not sure if Eogranivora ate only seeds or also other foods, because some modern birds that eat hard items also use gizzard stones.1