Dinokaart nr. 0801 van 2 027

Hesperornis

Naam beteken: “western bird”1

Hesperornis was a giant swimming bird that lived in the time of dinosaurs. It had teeth in its beak and could not fly, but it was a super diver in the ancient seas.1 2

Het geleef

90 tot 66 miljoen jaar gelede5

Laat Kryt

Fossiele gevind in

North America (Kansas, Montana, South Dakota, Alaska, Canada), Russia, and Sweden5 1

Lengte

1,5 tot 1,8 m (4,9 tot 5,9 ft)1

Gewig

10,6 kg (23 lb)1

Hoogte

0,81 m (2,7 ft)

skatting

Topspoed

omtrent 16 km/h (10 mph)

Swem, skatting

Wanneer het dit geleef?

Trias

Jura

Kryt

252 miljoen jaar gelede20114566, die asteroïde

Hoe groot was dit?

Hoe lank was dit?

Hoe hoog was dit?

skatting

Hoe swaar was dit?

so swaar soos 2,5 huiskatte

so lank soos 4 huiskatte van neus tot stertso lank soos 10 piesangs punt aan puntso swaar soos 88 piesangskon die lengte van 'n groot swembad (50 m) in 11 sekondes swem

Hoe groot was Hesperornis vergeleke met JOU?

Net wiskunde in jou blaaier. Niks word gestoor of êrens heen gestuur nie.

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)

Hesperornis omtrent 16 km/h (10 mph)

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

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

cool goed

Prettige feite

Hesperornis was one of the first birds to give up flying and become a full-time swimmer.2

Its legs were placed far back on its body, like a loon, making it clumsy on land but a powerful diver.1

Hesperornis had teeth in its beak, which is rare for birds. It used them to catch fish.1 2

The first fossils of Hesperornis were found by famous fossil hunter Othniel Charles Marsh in 1870 in Kansas.1 2

Several species of Hesperornis lived from about 90 to 66 million years ago, during the Late Cretaceous.5

Hesperornis fossils have been found in many places, including Canada, the United States, Russia, and Sweden.5

KI-prent van Hesperornis — 'n KI-prent van hoe Hesperornis 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.

julle het gevra

Mees gevraagde vrae oor Hesperornis

?How big was Hesperornis?

About 1.5 to 2 metres (4.9 to 6.6 ft) long and weighed around 10.6 kilograms (23 lb).1

?Did Hesperornis have teeth?

Yes, it had teeth in its beak, which is rare for birds. The teeth sat in a groove, not in individual sockets.1

?Could Hesperornis fly?

No, it could not fly. Its wings were tiny and useless for flight, and its breastbone lacked a keel for flight muscles.1 3

?What did Hesperornis eat?

It ate fish, which it caught with its tooth-lined beak while diving in the sea.4

?When did Hesperornis live?

It lived during the Late Cretaceous period, about 83.6 to 72 million years ago, and possibly into the early Maastrichtian.1

?Where was Hesperornis found?

Fossils have been found in Kansas, Canada, Russia, Sweden, and other places, mostly in marine rocks.1

?Could Hesperornis walk on land?

It was clumsy on land. Its legs were placed far back, so it probably pushed itself along on its belly like a seal.1

Mite-breker

Mite: Some people think Hesperornis was a dinosaur.

Waarheid: Hesperornis was a bird, not a dinosaur. Birds evolved from dinosaurs, but Hesperornis itself is classified as a bird.1

Vir dino-kenners

Wetenskaplike naam: Hesperornis
Benoem deur: Marsh 18725
Groep: Vroeë voëls
Familie / klade: Hesperornithidae5
Klassifikasie: Theropoda > Avialae5
Ouderdom van die rotse: 90 tot 66 miljoen jaar (Coniacian / Maastrichtian)5
Rotsformasies: Pierre Shale, Rybushka, Niobrara5
Lande: Kanada, VSA, Rusland, Swede5
Fossielrekords: 65 in The Paleobiology Database5
Ook bekend as: Coniornis, Hargeria, Lestornis (ouer name tel nou as dieselfde dier)5
Ontdekking: Othniel Charles Marsh discovered the first Hesperornis fossil in 1870 near the Smoky Hill River in Kansas. He named it Hesperornis regalis in 1872.1 2
Steeds omstrede: Scientists are still debating exactly how many species of Hesperornis existed, because many fossils are incomplete.1

Waar die feite vandaan kom

Hesperornis (en.wikipedia.org)
The Hesperornithiformes: A Review of the Diversity, Distribution, and Ecology of the Earliest Diving Birds (mdpi.com)
Hesperornis - Scholars | Britannica Kids | Encyclopedia (kids.britannica.com)
Hesperornis Facts, Artwork, Information - National Geographic | National Geographic (nationalgeographic.com)
Hesperornis in The Paleobiology Database (CC BY 4.0): ouderdom, plekke, rotsformasies, klassifikasie.

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