Kaririavis

O nome significa: “Kariri bird, named after the Karirí people of northeastern Brazil”1

Comía: CarneAves primitivasCretáceo Inferior

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

Viviu

hai entre 120 e 113 millóns de anos4

Cretáceo Inferior

Fósiles atopados en

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

Velocidade máxima

uns 27 km/h (17 mph)

Voar, estimación

Cando viviu?

Triásico

Xurásico

Cretáceo

Hai 252 millóns de anos20114566, o asteroide

Que velocidade alcanzaba?

Unha persoa camiñando uns 5 km/h (3 mph)

Un neno en bici uns 12 km/h (7 mph)

Kaririavis uns 27 km/h (17 mph)

Un cabalo ao galope uns 65 km/h (40 mph)

Un guepardo uns 100 km/h (62 mph)

cousas xeniais

Datos curiosos

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

Imaxe de Kaririavis feita con IA — Unha imaxe feita con IA de como podería ser Kaririavis, creada por un ordenador a partir do que saben os científicos. É unha suposición: o animal real podía ser diferente, e ninguén sabe as súas cores de verdade.

Para expertos en dinos

Nome científico: Kaririavis
Bautizado por: Carvalho et al. 20214
Grupo: Aves primitivas
Familia / clado: Ornithuromorpha4
Clasificación: Theropoda > Avialae4
Idade das rochas: de 120 a 113 millóns de anos (Aptian)4
Formacións rochosas: Crato4
Países: Brasil4
Rexistros fósiles: 1 na Paleobiology Database4
Descubrimento: 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
Aínda en debate: 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

De onde veñen os datos

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): idade, lugares, formacións rochosas, clasificación.

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