Kaririavis

Izenaren esanahia: “Kariri bird, named after the Karirí people of northeastern Brazil”1

Jaten zuen: HaragiaLehen hegaztiakBehe Kretazeoa

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

Bizi izan zen

Duela 120 eta 113 milioi urte artean4

Behe Kretazeoa

Fosilak hemen aurkitu dira:

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

Abiadura maximoa

27 km/h inguru (17 mph)

Hegan egitea, kalkulua

Noiz bizi izan zen?

Triasikoa

Jurasikoa

Kretazeoa

Duela 252 milioi urte20114566, asteroidea

Zein azkarra zen?

Pertsona bat oinez 5 km/h inguru (3 mph)

Haur bat bizikletan 12 km/h inguru (7 mph)

Kaririavis 27 km/h inguru (17 mph)

Zaldi bat lauhazka 65 km/h inguru (40 mph)

Gepardo bat 100 km/h inguru (62 mph)

gauza bikainak

Datu dibertigarriak

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

Kaririavis: AAk egindako irudia — Kaririavis nolakoa izan zitekeen erakusten duen AAk egindako irudia, ordenagailu batek zientzialariek dakitenetik sortua. Asmakizun bat da: benetako animalia desberdina izan zitekeen, eta inork ez daki zein ziren bere benetako koloreak.

Dino adituentzat

Izen zientifikoa: Kaririavis
Izendatzailea:: Carvalho et al. 20214
Taldea: Lehen hegaztiak
Familia / klada: Ornithuromorpha4
Sailkapena: Theropoda > Avialae4
Arroken adina: 120 eta 113 milioi urte artean (Aptian)4
Arroka-formazioak: Crato4
Herrialdeak: Brasil4
Fosil-erregistroak: 1 The Paleobiology Database datu-basean4
Aurkikuntza: 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
Oraindik eztabaidagai: 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

Datuak nondik datozen

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): adina, tokiak, arroka-formazioak, sailkapena.

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