Introduction To Sinornithomimus Dinosaur
Sinornithomimus is an extinct genus of dinosaurs found in Asia and it is of the Dromaeosauridae family. It was in existence during the Cretaceous period which is believed to have taken place over 65 million years ago. The Sinornithomimus dinosaurs were small with a long tail and were primarily predators, using sharp teeth to catch their prey.
Physical Characteristics Of Sinornithomimus Dinosaur
The adult Sinornithomimus was approximately 4.5- 5.5 feet in height, with a weight of about 80-85 lbs. It was a bipedal dinosaur with a long neck and small head, large eyes and long arms. Its tail was large, which made its back rather curved, and it had a large, V-shaped crest on its snout and a beak-like mouth which contained sharp serrated teeth. Its forelimbs were large and adapted to grabbing prey and the hind legs were modified so they could jump and run.
Habitats Of Sinornithomimus Dinosaur 
The Sinornithomimus was a terrestrial dinosaur and is believed to have inhabited open forests and savannas. It was well adapted to the environment of the Cretaceous period, which included a lack of ice, and a warm climate. As such, its habitat was spread across parts of Asia, including China, Mongolia and North Korea.
Feeding Habits Of Sinornithomimus Dinosaur 
Sinornithomimus was a carnivorous dinosaur and its diet could have included insects and small animals like other dromaeosaurids and lizards. Its sharp teeth and long arms were used for capturing and holding on to prey and large animals such as other small dinosaurs and mammals. Sinornithomimus was also thought to have been a scavenger, feeding off the carcasses of other animals.
Reproduction Of Sinornithomimus Dinosaur
Not much is known about the reproductive habits of Sinornithomimus, however, it is assumed that like most dinosaurs, it was oviparous, meaning it laid eggs. It is believed that the Sinornithomimus did not actually take care of its young, but instead abandoned the eggs shortly after they were laid.
Extinction Of Sinornithomimus Dinosaur
The Sinornithomimus is believed to have gone extinct around 65 million years ago at the end of the Cretaceous period, when a massive asteroid caused a climate shift which wiped out many different species. It is also possible that the Sinornithomimus went extinct due to competition from other predators and changes to the climate which rendered their environment less suitable for life.
Conclusion
The Sinornithomimus dinosaur was an interesting creature that lived during the Cretaceous period, around 65 million years ago. This small carnivorous dinosaur was well-adapted to its environment and had a long tail, sharp teeth and a beak-like mouth. Its diet included insects and small animals, and it was most likely a scavenger as well. Eventually, the Sinornithomimus went extinct towards the end of the Cretaceous period due to the impact of a volcano or comet causing a rapid climate shift.