Kaririavis

Izina risobanura: “Kariri bird, named after the Karirí people of northeastern Brazil”1

Yaryaga: InyamaInyoni za mbereKiretase ya mbere

Kaririavis was a tiny, sparrow-sized bird that lived about 115 million years ago in what is now Brazil. It is one of the oldest known birds of its group from the southern continents. Scientists know it from just one fossil foot, but that foot tells a big story!1 2

Yabayeho

hashize imyaka miliyoni 120 kugeza 1134

Kiretase ya mbere

Ibisigazwa byabonetse muri

Pedra Branca Mine, Nova Olinda County, Ceará State, Brazil1

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)

Kaririavis 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

Kaririavis is the oldest known ornithuromorph bird from Gondwana, the ancient southern supercontinent.1 2

Its name honors the Karirí people, an indigenous group from northeastern Brazil.1

The fossil is just a single foot, but it includes at least 10 preserved contour feathers, which are the feathers that cover a bird's body.1

Kaririavis had a very large, hooked claw on its second toe, which was about one third the length of its foot bone.1

Unlike many early birds that lived near water, Kaririavis's foot shape suggests it may have spent most of its time on the ground.1

The fossil was found in the Crato Formation, a famous fossil site in Brazil known for preserving soft tissues like feathers.1

Ishusho ya Kaririavis yakozwe na AI — Ishusho yakozwe na AI yerekana uko Kaririavis 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: Kaririavis
Yiswe na: Carvalho et al. 20214
Itsinda: Inyoni za mbere
Umuryango / ishami: Ornithuromorpha4
Ishyirwa mu byiciro: Theropoda > Avialae4
Imyaka y'amabuye: imyaka miliyoni 120 kugeza 113 (Aptian)4
Inzego z'amabuye: Crato4
Ibihugu: Burezili4
Ibisigazwa byanditswe: 1 muri The Paleobiology Database4
Ivumburwa: Kaririavis was named by Carvalho and colleagues in 2021, based on a fossil foot found at Pedra Branca Mine in Brazil. The species name 'mater' means 'mother' in Latin, because it is the oldest ornithuromorph from South America.1 3
Biracyagibwaho impaka: Scientists are not sure whether Kaririavis lived on the ground or in the trees, because its foot has a mix of features that point to different lifestyles.1

Aho amakuru yakuwe

A new ornithuromorph bird from the Lower Cretaceous of South America (igeo.ufrj.br)
Kaririavis (en.wikipedia.org)
PBDB Taxon (paleobiodb.org)
Kaririavis in The Paleobiology Database (CC BY 4.0): imyaka, ahantu, inzego z'amabuye, ishyirwa mu byiciro.

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