Jiuquanornis

Il num vul dir: “Jiuquan bird, named after the city near where it was found”1

Mangiava: CharnUtschels primitivsCretacic tempriv

Jiuquanornis was a small, bird-like dinosaur that lived about 120 million years ago. It had a U-shaped wishbone and a sternum that looked like those of some modern ground birds. Scientists think it might have been a fast runner that ate meat.1 2

Viveva

avant 121 fin 113 milliuns onns2

Cretacic tempriv

Fossils chattads en

Changma Basin, Gansu Province, northwestern China2 1

Spertadad maximala

var 27 km/h (17 mph)

Sgular, stima

Cura viveva el?

Triassic

Giurassic

Cretacic

avant 252 milliuns onns20114566, l'asteroid

Quant spert era el?

Ina persuna che va a pe var 5 km/h (3 mph)

In uffant sin il velo var 12 km/h (7 mph)

Jiuquanornis var 27 km/h (17 mph)

In chaval che galoppescha var 65 km/h (40 mph)

In gepard var 100 km/h (62 mph)

chaussas cool

Fatgs divertents

Jiuquanornis is known from a single fossil that was first described in 2013. The fossil includes parts of the sternum, furcula, and forelimb.1

Its sternum had long, thin projections called trabeculae, which are also seen in modern ground-dwelling birds like chickens and tinamous.1

Jiuquanornis had a U-shaped furcula (wishbone) with a low angle of about 36 degrees, and it lacked a hypocleidium, a small projection found in some birds.1

Scientists think Jiuquanornis was a basal ornithuromorph, meaning it was an early relative of modern birds but not a direct ancestor.1

The fossil of Jiuquanornis was found in the Xiagou Formation, which is about 121 to 113 million years old, from the Early Cretaceous period.2 1

Jiuquanornis was named after the city of Jiuquan, which is near the fossil site. The species name niui honors Professor Shao-Wu Niu for his geological work.1

The fossil of Jiuquanornis was originally thought to be too incomplete to name, but scientists later decided it was different enough from other birds to be a new species.1

Maletg da Jiuquanornis fatg cun IA — In maletg fatg cun IA che mussa co Jiuquanornis pudess avair guardà ora, fatg d'in computer tenor quai che la scienza sa. I sa tracta d'ina supposiziun: l'animal vair ha forsa guardà ora auter, e sias colurs vairas èn nunenconuschentas.

Per experts da dinos

Num scientific: Jiuquanornis
Numnà da: Wang et al. 20132
Gruppa: Utschels primitivs
Famiglia / clada: Ornithuromorpha2
Classificaziun: Theropoda > Avialae2
Vegliadetgna da la crappa: 121 fin 113 milliuns onns (Aptian)2
Formaziuns da crap: Xiagou2
Pajais: China2
Chats da fossils: 1 en The Paleobiology Database2
Scuverta: Jiuquanornis was named in 2013 by Wang and colleagues. The fossil, specimen GSGM-05-CM-021, was found in the Xiagou Formation near Changma in Gansu Province, China. It was first described as an unnamed bird in 2005, but later recognized as a new species.1 2
Anc discutà: Scientists are not sure whether Jiuquanornis lived on the ground or in the water, because its fossil is too incomplete to tell. Its sternum shape suggests it might have been a fast runner, but more fossils are needed.1

Danunder che vegnan ils fatgs

Previously Unrecognized Ornithuromorph Bird Diversity in the Early Cretaceous Changma Basin, Gansu Province, Northwestern China (journals.plos.org)
Jiuquanornis in The Paleobiology Database (CC BY 4.0): vegliadetgna, lieus, formaziuns da crap, classificaziun.

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