Yandusaurus (YAN-doo-SORE-us) was a genus of hypsilophodontid dinosaur that lived in the Bathonian – Callovian age during the Middle Jurassic period, 169 – 163 million years ago, in Sichuan, China. It was a very important dinosaur in the history of hypsilophodontid dinosaurs.
Yandusaurus measured 5 feet (1.5 metres) in length, 1 foot (0.3 metres) in height and weighed around 7 kilograms (15 pounds). It was a small, bipedal dinosaur that moved around on its 2 strong hind legs that were built for fast running which helped this little dinosaur evade fierce predators. Yandusaurus had 4 clawed toes on each foot and 5 clawed fingers on each hand. Scientists do not know whether its hands were able to grasp it. Its body was lightly built and its neck was long and thin. Its long, pointed tail was used for balance and to change direction quickly when running and escaping predators.
Nobu Tamura email:firstname.lastname@example.org http://spinops.blogspot.com/, CC BY-SA 4.0, via Wikimedia Commons
|Lived:||Late Jurassic, 160 – 144 million years ago|
|Length||8m / 26ft|
Yangchuanosaurus (Yan-hoo-an-owe-sore-uss) was a large theropod dinosaur that lived in the Oxfordian – Kimmeridgian stages during the Late Jurassic Period, 158 – 156 million years ago, in China. It was similar in size and appearance to its North American contemporary, Allosaurus. Yangchuanosaurus comes from the Upper Shaximiao Formation and was the largest predator in a landscape which included the sauropods Mamenchisaurus and Omeisaurus as well as the Stegosaurs Chialingosaurus, Tuojiangosaurus and Chungkingosaurus.
Yangchuanosaurus measured 33 feet (10 metres) in length and weighed around 3 – 4 tons. It had a very large skull which could measure up to 3.5 feet (1.1 metres) long. Like many predatory dinosaurs, Yangchuanosaurus had a low crest that ran along the front of its snout, from the nose to slightly in front of the eyes and multiple hornlets and ridges, similar to Ceratosaurus. It had huge jaws that contained many large, sharp teeth which it used to crush its prey. It had a massive tail that was about half its length. Yangchuanosaurus was a bipedal dinosaur and walked on its 2 large, powerful, hind legs which were equipped with 3 large clawed toes. Its fore limbs were short and equipped with 3 clawed fingers on each hand.
Yingshanosaurus (ying-shan-oh-sore-us) is a genus of dinosaur that lived in the Oxfordian – Tithonian stages during the Upper Jurassic period, 159 – 142 million years ago. It was a stegosaur which lived in what is now China. It was similar to another stegosaur, Tuojiangosaurus, but slightly smaller.
Yingshanosaurus measured 17 feet (5 metres) in length and weighed around 1.6 tons. Yingshanosaurus differed from its plate-backed relatives as it had a pair of huge wing-like spines on its shoulders, which were flat, like the 2 rows of small bony plates along its back. It had a spiked tail which it probably used for defence by swiping its attacker. Its head was long and its jaws contained many cheek teeth which enabled it to chew tough vegetation. It was a quadrupedal dinosaur that moved around slowly on 4 thick-set legs which may have had hoof-like toes.
Yunnanosaurus (YOU-NAN-oh-SAWR-us) is a genus of prosauropod dinosaur that lived in the Hettangian – Pliensbachian ages, 208 – 194 million years ago, during the Early Jurassic period, a position in time that makes it one of the last prosauropods. Yunnanosaurus is closely related to Lufengosaurus.
Yunnanosaurus is a medium sized dinosaur and measured 23 feet (7metres) in length, 7 feet (2 metres) in height and weighed 600 kilograms (1,300 pounds). Larger species could measure up to 42 feet (13 metres) in length. Yunnanosaurus had more than 60 spoon-shaped teeth in the jaws and were unique among prosauropods in that its teeth were self-sharpening because they would grind against each other as the dinosaur ate. Scientists consider these teeth to be advanced compared to other prosauropods. This primitive sauropodomorph had a long neck, long tail and a small, narrow head with a short snout. Yunnanosaurus also had a skull that had a different shape than its earlier relatives.
|Lived:||Early Jurassic, 201 – 168 million years ago|
|Length||7m / 23ft|
Last Updated on 06/07/2021 by admin