Avimaia

Izina risobanura: “bird mother”1

Yaryaga: InyamaInyoni za mbereKiretase ya mbere

Avimaia was a small bird that lived about 120 million years ago. It is special because scientists found an egg still inside its body. This helps us learn how ancient birds had babies.2 1

Yabayeho

hashize imyaka miliyoni 121 kugeza 1132

Kiretase ya mbere

Ibisigazwa byabonetse muri

Changma, Yumen, Gansu Province, northwestern China2 1

Umuvuduko wo hejuru

nka 27 km/h (17 mph)

Kuguruka, igereranya

Yabayeho ryari?

Triyasike

Jurasike

Kiretase

Hashize miliyoni 252 z'imyaka20114566, asiteroyide

Yihutaga ite?

Umuntu ugenda n'amaguru nka 5 km/h (3 mph)

Umwana ku igare nka 12 km/h (7 mph)

Avimaia nka 27 km/h (17 mph)

Ifarashi yiruka cyane nka 65 km/h (40 mph)

Ingwe yihuta cyane nka 100 km/h (62 mph)

utuntu twiza cyane

Utuntu dushimishije

Avimaia is the only fossil bird ever found with an unlaid egg still inside its body.1

The eggshell of Avimaia was very thin and had multiple layers. Scientists think this happened because the egg stayed too long inside the mother.1

Avimaia's leg bones contain medullary bone. This is a special tissue that only female birds make when they are ready to lay eggs.1

The egg of Avimaia was flattened and measured about 5.2 square centimeters.1

Avimaia lived during the Early Cretaceous period, about 121 to 113 million years ago.2

The name Avimaia means 'bird mother' in Latin, because the fossil is a female with an egg.1

Ishusho ya Avimaia yakozwe na AI — Ishusho yakozwe na AI yerekana uko Avimaia ishobora kuba yari isa, yakozwe na mudasobwa hashingiwe ku byo abahanga bazi. Ni ugukeka gusa: inyamaswa nyayo ishobora kuba yari isa ukundi, kandi nta muntu uzi amabara yayo nyayo.

Ku bazobereye muri dinozore

Izina rya siyansi: Avimaia
Yiswe na: Bailleul et al. 20192
Itsinda: Inyoni za mbere
Umuryango / ishami: Enantiornithes2
Ishyirwa mu byiciro: Theropoda > Avialae2
Imyaka y'amabuye: imyaka miliyoni 121 kugeza 113 (Aptian)2
Inzego z'amabuye: Xiagou2
Ibihugu: Ubushinwa2
Ibisigazwa byanditswe: 1 muri The Paleobiology Database2
Ivumburwa: Avimaia was named in 2019 by Alida Bailleul and her team. The fossil was found in the Xiagou Formation in China.2 1
Biracyagibwaho impaka: Scientists are not sure why the eggshell of Avimaia was so thin and had multiple layers. It might have been a health problem or a normal part of its reproduction.1

Aho amakuru yakuwe

nature.com (nature.com)
Avimaia in The Paleobiology Database (CC BY 4.0): imyaka, ahantu, inzego z'amabuye, ishyirwa mu byiciro.

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