Kaririavis

Zita rinoreva: “Kariri bird, named after the Karirí people of northeastern Brazil”1

Raidya: NyamaShiri dzekutangaCretaceous Yekutanga

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

Raivapo

makore mamiriyoni 120 kusvika 113 apfuura4

Cretaceous Yekutanga

Mafosiri akawanikwa:

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

Kumhanya kwepamusoro

kunenge 27 km/h (17 mph)

Kubhururuka, fungidziro

Rairarama rini?

Triassic

Jurassic

Cretaceous

makore mamiriyoni 252 apfuura20114566, dombo guru rakabva mudenga

Raimhanya zvakadii?

Munhu achifamba kunenge 5 km/h (3 mph)

Mwana ari pabhasikoro kunenge 12 km/h (7 mph)

Kaririavis kunenge 27 km/h (17 mph)

Bhiza richimhanya kunenge 65 km/h (40 mph)

Dindingwe kunenge 100 km/h (62 mph)

zvinhu zvinonakidza

Zvinonakidza

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

Mufananidzo wakagadzirwa neAI: Kaririavis — Mufananidzo wakagadzirwa neAI unoratidza kuti Kaririavis ringangodai raitaridzika sei, wakagadzirwa nekombiyuta kubva pane zvinozivikanwa nemasayendisiti. Ifungidziro chete: mhuka chaiyo ingangodai yaitaridzika zvakasiyana, uye hapana anoziva mavara ayo chaiwo.

Zvevanyanzvi vemadhino

Zita resainzi: Kaririavis
Akaripa zita:: Carvalho et al. 20214
Boka: Shiri dzekutanga
Mhuri / boka: Ornithuromorpha4
Kurongwa kwemhuka: Theropoda > Avialae4
Zera rematombo: makore mamiriyoni 120 kusvika 113 (Aptian)4
Mapoka ematombo: Crato4
Nyika: Brazil4
Zvinyorwa zvemafosiri: 1 mu The Paleobiology Database4
Kuwanikwa: 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
Zvichiri kupokanwa: 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

Kunobva chokwadi

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): zera, nzvimbo, mapoka ematombo, kurongwa kwemhuka.

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