Dino kad No. 1486 wɔ 2 027 mu

Protognathosaurus

Din no ase: “early jaw lizard”1

Ɔdii: NhabanKɔn tentenJurasik Mfinimfini kɔsi Jurasik Awieeɛ

Protognathosaurus was a long-necked, plant-eating dinosaur that lived in what is now China during the Middle Jurassic. It is known only from a piece of its lower jaw, so scientists are still learning about it. Most researchers think it was a medium-sized sauropod.1 3

Ɔtenaa ase

mfeɛ ɔpepem 171 kɔsi 155 a atwam3

Jurasik Mfinimfini kɔsi Jurasik Awieeɛ

Wɔhunuu fɔsil wɔ

Dashanpu Dinosaur Quarry, Sichuan, China3 1

Tenten

10 kɔsi 100 m (33 kɔsi 328 ft)2

Ntɛmntɛm a ɛsen biara

bɛyɛ 15 km/h (9 mph)

Mmirikatuo, nsusuiɛ

Berɛ bɛn na ɛtenaa ase?

Triasik

Jurasik

Kretasias

mfeɛ ɔpepem 252 a atwam20114566, ɔsoro ɛboɔ no

Na ne kɛseɛ yɛ sɛn?

Na ne tenten yɛ sɛn?

ne tenten te sɛ kaa 22 a wɔde agyina toatoa sone tenten te sɛ kwadu 560 a wɔde abɔ toatoa soanka ɔbɛtumi atu mmirika mita 100 wɔ sikɛn 24 mu (onipa a ɔyɛ ntɛm sen biara hia 9.6)

Protognathosaurus kɛseɛ yɛ sɛn sɛ wode toto WO ho a?

Akontaa nko ara wɔ wo browser mu. Yɛnkora biribiara so, na yɛmmfa biribiara nkɔ baabiara.

Na ɛyɛ ntɛm sɛn?

Onipa a ɔnante bɛyɛ 5 km/h (3 mph)

Abofra a ɔte sakre so bɛyɛ 12 km/h (7 mph)

Protognathosaurus bɛyɛ 15 km/h (9 mph)

Ɔpɔnkɔ a ɔretu mmirika bɛyɛ 65 km/h (40 mph)

Kyiita bɛyɛ 100 km/h (62 mph)

nneɛma a ɛyɛ fɛ

Nsɛm a ɛyɛ anigye

Protognathosaurus is known only from a single fossil: the front part of a left lower jaw, called a dentary.1

This dinosaur had 18 to 20 teeth in its lower jaw, and some of them were sharp replacement teeth still growing in.1 2

Its teeth had a sharp point and small serrations (like a steak knife) on the front and back edges.2

The name Protognathosaurus was first used in 1991 by George Olshevsky, because the original name Protognathus was already taken by a beetle.1

Most scientists consider Protognathosaurus a nomen dubium, meaning the fossil is too incomplete to be sure it is a distinct species.1

The jaw bone is thick and heavy, with a deep groove called the Meckelian canal, which is a feature of some early sauropods.2

Yei yɛ Protognathosaurus mfonini a AI yɛeɛ, sɛdeɛ ebia na ɔteɛ. Kɔmputa na ɛyɛeɛ firi deɛ nyansahufoɔ nim mu. Ɛyɛ nsusuiɛ: ebia na aboa ankasa no nte saa, na obiara nnim ne kɔla ankasa.

wobisaeɛ

Nsɛm a wɔbisa bebree fa Protognathosaurus ho

?How big was Protognathosaurus?

Scientists don't know exactly, because only a jaw bone has been found. It was probably a medium-sized sauropod, maybe 10 to 20 metres long.1 3

?What did Protognathosaurus eat?

It was a herbivore, meaning it ate plants. Its sharp, serrated teeth helped it chew tough leaves.1 3

Ma dino ho animdefoɔ

Nyansahu din: Protognathosaurus
Obi a ɔtoo din: Olshevsky 19913
Kuo: Kɔn tenten
Abusua / kuo kɛseɛ: Cetiosauridae3
Nkyekyɛmu: Sauropodomorpha > Sauropoda3
Abotan no mfeɛ: mfeɛ ɔpepem 171 kɔsi 155 (Bajocian / Oxfordian)3
Abotan nhyehyɛeɛ: Shaximiao3
Aman: Kyaena3
Fɔsil nkyerɛwee: 1 wɔ The Paleobiology Database mu3
Nhunumu: The fossil was found in the Dashanpu Dinosaur Quarry in Sichuan, China. It was named Protognathus oxyodon by Zhang Yihun in 1988, but that name was already used for a beetle, so George Olshevsky renamed it Protognathosaurus oxyodon in 1991.1
Wɔda so gye ho akyinnye: Scientists are not sure if Protognathosaurus is a valid dinosaur or just a doubtful name, because only a piece of jaw has been found.1

Baabi a nsɛm no firi

Protognathosaurus (en.wikipedia.org)
PBDB Taxon (paleobiodb.org)
Protognathosaurus in The Paleobiology Database (CC BY 4.0): mfeɛ, mmeaeɛ, abotan nhyehyɛeɛ, nkyekyɛmu.

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