Himeoolithus

Izina risobanura: “small egg stone, from Japanese 'hime' meaning small or pretty, and Greek 'oo' and 'lithos' meaning egg stone”1

Yaryaga: InyamaDinozore zirya inyamaKiretase ya mbere

Himeoolithus was a tiny meat-eating dinosaur that lived in what is now Japan about 110 million years ago. It is known from its eggs, which are some of the smallest theropod eggs ever found, about the size of a quail egg. These eggs show that small dinosaurs lived alongside the giants!2

Yabayeho

hashize imyaka miliyoni 113 kugeza 1103

Kiretase ya mbere

Ibisigazwa byabonetse muri

Kamitaki Egg Quarry, Hyogo Prefecture, Japan3 2

Umuvuduko wo hejuru

nka 47 km/h (29 mph)

Kwiruka, 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)

Himeoolithus nka 47 km/h (29 mph)

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

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

utuntu twiza cyane

Utuntu dushimishije

Himeoolithus eggs are the smallest non-avian theropod eggs known, with an estimated mass of only 9.9 grams, about the size of a modern quail egg.1

The eggs are unusually elongated for their size, with a length-to-width ratio of 2.25, which is more typical of larger theropod eggs.1

The nest was found in place, not moved by water or wind, because most eggshell fragments were positioned concave-up, which happens when they break in place.2

Over 1,300 eggshell fragments from Himeoolithus were found at the Kamitaki Egg Quarry, along with other small theropod eggs.2

The high diversity of small theropod eggs at this site makes it one of the most diverse Early Cretaceous egg localities known.2

Ishusho ya Himeoolithus yakozwe na AI — Ishusho yakozwe na AI yerekana uko Himeoolithus 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.

Gusenya ibinyoma

Ibivugwa: Some people think all dinosaurs were huge, but Himeoolithus shows that many were small.

Ukuri: Himeoolithus eggs are tiny, and the dinosaur that laid them was likely small, showing that dinosaurs came in many sizes.2

Ku bazobereye muri dinozore

Izina rya siyansi: Himeoolithus
Yiswe na: Tanaka et al. 20203
Itsinda: Dinozore zirya inyama
Umuryango / ishami: Theropoda3
Ishyirwa mu byiciro: Theropoda3
Imyaka y'amabuye: imyaka miliyoni 113 kugeza 110 (Albian)3
Inzego z'amabuye: Ohyamashimo3
Ibihugu: Ubuyapani3
Ibisigazwa byanditswe: 1 muri The Paleobiology Database3
Ivumburwa: The eggs were first discovered in 2015 at the Kamitaki Egg Quarry in Japan, and the species was named by Tanaka and colleagues in 2020.2 3
Biracyagibwaho impaka: Scientists are not sure exactly which theropod dinosaur laid the eggs, since no bones of the adult have been found yet.2

Aho amakuru yakuwe

Exceptionally small theropod eggs from the Lower Cretaceous Ohyamashimo Formation of Tamba, Hyogo Prefecture, Japan (sciencedirect.com)
Tiny Japanese Dinosaur Eggs Help Unscramble Cretaceous Ecosystem | Research News - University of Tsukuba (tsukuba.ac.jp)
Himeoolithus in The Paleobiology Database (CC BY 4.0): imyaka, ahantu, inzego z'amabuye, ishyirwa mu byiciro.

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