Dinokaart nr. 1935 van 2 027

Xiangornis

Naam beteken: “free flight bird”1

Xiangornis was an ancient bird that lived about 120 million years ago. It had a mix of features from two big groups of early birds, making it a mysterious and special creature. Its wing bones were already fused together like in modern birds, which helped it fly strongly.1 2

Het geleef

121 tot 113 miljoen jaar gelede4

Vroeë Kryt

Fossiele gevind in

Liaoning Province, China1 2

Topspoed

omtrent 27 km/h (17 mph)

Vlieënd, skatting

Wanneer het dit geleef?

Trias

Jura

Kryt

252 miljoen jaar gelede20114566, die asteroïde

Hoe vinnig was dit?

'n Mens wat loop omtrent 5 km/h (3 mph)

'n Kind op 'n fiets omtrent 12 km/h (7 mph)

Xiangornis omtrent 27 km/h (17 mph)

'n Galopperende perd omtrent 65 km/h (40 mph)

'n Jagluiperd omtrent 100 km/h (62 mph)

cool goed

Prettige feite

Xiangornis belongs to a group called Enantiornithes, which were the most common birds during the Cretaceous period.3 1

Its wing bones (carpometacarpus) were completely fused together, both near the body and far from it, just like in modern birds.1 2

Xiangornis had a large extensor process on its wing, a bony bump that helped attach muscles and ligaments for strong flight.1 2

This bird shows that some features thought to belong only to modern birds actually evolved earlier and separately in enantiornithines.1 2

The name Xiangornis comes from Mandarin words meaning 'free flight' and the Greek word for bird.1 2

Xiangornis lived during the Aptian age, about 121 to 113 million years ago, in what is now Liaoning, China.3

KI-prent van Xiangornis — 'n KI-prent van hoe Xiangornis dalk gelyk het, deur 'n rekenaar gemaak uit wat wetenskaplikes weet. Dit is 'n raaiskoot: die regte dier het dalk anders gelyk, en niemand weet wat sy regte kleure was nie.

Vir dino-kenners

Wetenskaplike naam: Xiangornis
Benoem deur: Hu et al. 20124
Groep: Vroeë voëls
Familie / klade: Enantiornithes4
Klassifikasie: Theropoda > Avialae4
Ouderdom van die rotse: 121 tot 113 miljoen jaar (Aptian)4
Rotsformasies: Jiufotang4
Lande: China4
Fossielrekords: 1 in The Paleobiology Database4
Ontdekking: Xiangornis was named by Hu and colleagues in 2012 based on a partial skeleton found in the Jiufotang Formation of Liaoning, China. The fossil includes wing and shoulder bones.3 1
Steeds omstrede: Scientists are still debating whether Xiangornis is truly an enantiornithine or if it blurs the line between enantiornithines and ornithuromorphs (the group that includes modern birds).1 2

Waar die feite vandaan kom

A new enantiornithine bird from the Lower Cretaceous of Western Liaoning, China, and its implications for early avian evolution (tandfonline.com)
A new enantiornithine bird from the Lower Cretaceous of Western Liaoning, China, and its implications for early avian evolution (ivpp.cas.cn)
PBDB Taxon (paleobiodb.org)
Xiangornis in The Paleobiology Database (CC BY 4.0): ouderdom, plekke, rotsformasies, klassifikasie.

Elke feit op hierdie bladsy het 'n nommer wat na sy bron wys. As ons iets verkeerd het, jammer, ons is dino-aanhangers, nie 'n wetenskapjoernaal nie. Laat weet ons by [email protected] en ons maak dit reg.

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