Parasaurolophus (pa-ra-saw-ROL-off-us) was a genus of hadrosaurid (duck-billed) dinosaur that lived towards the end of the Mesozoic, Campanian Age, during the Upper Cretaceous Period, around 76.5 – 73 million years ago, in the woodlands of North America. Parasaurolophus lived at the same time as Albertosaurus, Nanotyrannus, Lambeosaurus (another hadrosaur), Euoplocephalus, Kritosaurus and Pachyrhinosaurus.
Parasaurolophus measured 31 feet (9.5 metres) in length, 16 feet (5 metres) in height and weighed 2 – 3 tons. Like other hadrosaurs, Parasaurolophus was a bipedal and quadruped dinosaur and moved around and ran on its hind legs and would change to all 4 legs while foraging for food on the ground. It was quite a fast runner.
The most notable feature of the Parasaurolophus was its long curved crest on their heads which could measure 6 feet (1.8 metres) in length, it was larger than the rest of their skull.
Patagosaurus (PAT-a-go-SAWR-us) was a huge dinosaur from the long-necked group Sauropoda who lived during the Callovian Age during the Middle Jurassic, 165 – 161 million years ago, in what is now Chubut, Argentina, South America. Other Argentinian dinosaurs living approximately at the same time were Piatnitzkysaurus, Condorraptor and Amygdalodon.
Patagosaurus measured 54 feet (16.5 metres) in length, 20 feet (6 metres) in height and weighed around 9,400kgs. Similar to other primitive sauropods, it was heavily built and similar to Cetiosaurus (Whale Lizard) in appearance but its hips and vertebrae were different. Patagosaurus had a very long neck which looked like a very thick trunk and a long, heavy tail. Its head was small and it had many cheek teeth for grinding plant material. It was quadrupedal and walked in all 4 thick legs.
Patagosaurus was a herbivore and ate plants. Its enemies were the theropod dinosaurs.
Piatnitzkysaurus (pye-at-nits-key-sore-us) is the name given to a genus of megalosaurid dinosaur who lived in the Callovian stage during the Upper Jurassic Period, around 166 – 164 million years ago in Chubut, Argentina, South America.
Piatnitzkysaurus measured 14 feet (4.3 metres) in length, 8 feet (2.5 metres) in height and weighed around 275 kilograms. Piatnitzkysaurus was a lightly built medium-sized bipedal dinosaur with short, clawed arms. It had a long stiff tail which it used for counter-balance, ridges on its snout and a distinguished crest on its head. Its body was heavily built and it had a large head on a short neck. Its hind legs were powerful and were equipped with sharp clawed toes on the feet. This dangerous dinosaur had many razor sharp teeth with which it would slice the flesh of its unfortunate prey.
Piatnitzkysaurus was a ferocious carnivore and is thought to have terrorized the plant eaters of that time.
Plateosaurus (plat-ee-oh-SORE-us) was the largest dinosaur known to have existed during the Triassic Period of the Mesozoic Era 214 – 204 million years ago in desert-like land in Europe. Plateosaurus was a prosauropod and a plateosaurid, heavy, thick-limbed herbivores that include Massospondylus, Mussaurus and Plateosaurus. Among its contemporaries in Triassic Europe were Saltopus and Proganochelys, the earliest known turtle.
Plateosaurus measured up to 33 feet (10 metres) in length and weighed around 4 tons. It had a bulky body with a pear shaped thrunk and a long, flexible neck composed of 10 cervical vertebrae. The skull of Plateosaurus was deeper than that of a Coelophysis, although still small and narrow compared to the size of its body. It had a long snout and sharp, serrated teeth that were leaf-shaped crowns suitable for crushing plant material and its eyes were directed to the sides, rather than the front, providing all-round vision to watch for predators. Plateosaurus had a flexible tail composed of at least 40 caudal vertebrae.
FunkMonk (Michael B. H.), hip armour by Franz Nopcsa von Felső-Szilvás, CC BY-SA 3.0, via Wikimedia Commons
|Lived:||Early Cretaceous 130 – 125 million years ago|
|Length||5m / 16ft|
Probactrosaurus (proh-bak-troh-sore-us) was an early duck-billed hadrosauroid iguanodont. It lived in the Aptian to Albian Age, during the Early Cretaceous Period 130 – 125 million years ago in Mawortuh, Alashan Desert, inner Mongolia, China.
Probactrosaurus measured 17 – 18 feet (5 – 5.5 metres) in length and weighed 1,000 kilograms. It had a narrow snout, an elongated lower jaw and double rows of flattened cheek teeth that were suitable for cropping soft vegetation. The duckbills had as many as five rows of teeth in the jaw, one beneath the other. Broken teeth were quickly replaced. Its tail was long, heavy and stiff and held this way by tendons. The hind feet had one toe that faced the opposite direction of its other toes, allowing it to grasp objects.
Probactrosaurus was a herbivorous dinosaur and would have ate a huge amount of plant material to sustain itself. These dinosaurs would eat on all 4 legs (quadrupedal) but when moving fast, would raise up on the hind legs (bipedal) using their tails to balance.
Emily Willoughby (firstname.lastname@example.org, http://emilywilloughby.com), CC BY-SA 3.0, via Wikimedia Commons
|Lived:||Late Cretaceous 74 – 70 million years ago|
|Weight:||200kg / 900Ibs|
|Length||1.8m / 6ft|
Protoceratops is a genus of ceratopsian dinosaur that lived in the Campanian stage during the Upper Cretaceous period, 74 – 70 million years ago, in what is now Mongolia, China. It was a member of the Protoceratopsidae, a group of early horned dinosaurs. Protoceratops was the first named protoceratopsian and therefore gives its name to the family Protoceratopsidae. Other ceratopsian dinosaurs include Triceratops and Styracosaurus.
Protoceratops was a small dinosaur and measured 6 feet (1.8 metres) in length, 3 feet (0.9 metres) in height to the top of its shoulders and weighed 200 kilograms (900 pounds). They were about the size of a modern sheep. Around its neck was a large frill which may have been used for protection of the neck or as a means of attracting mates and impressing other members of the species. The frill contained large holes and varied in size and shape depending on individual. Some had short frills while others had frills the size of their skull. Protoceratops walked relatively slowly on 4 short, thick legs and a bulky body.
Last Updated on 09/07/2021 by admin