![]() Typical Albertosaurus adults measured up to 9 m (30 ft) long, while rare individuals of great age could grow to be over 10 metres (33 feet) long. Several independent mass estimates, obtained by different methods, suggest that an adult Albertosaurus weighed between 1.3 tonnes and 1.7 tonnes (1.9 tons). It may have been at the top of the food chain in its local ecosystem. Albertosaurus was smaller than some other tyrannosaurids, such as Tarbosaurus and Tyrannosaurus. As a tyrannosaurid, Albertosaurus was a bipedal predator with tiny, two-fingered hands and a massive head that had dozens of large, sharp teeth. Scientists disagree on the content of the genus, with some recognizing Gorgosaurus libratus as a second species. sarcophagus, was apparently restricted in range to the modern-day Canadian province of Alberta, after which the genus is named. Black Rhinoceros also do not have a distinguishing shoulder hump like the White Rhinoceros.Īlbertosaurus (meaning "Alberta lizard") is a genus of tyrannosaurid theropod dinosaurs that lived in western North America during the Late Cretaceous Period, about 70 million years ago. The Black Rhinoceros can also be recognized from the White Rhinoceros by its smaller skull and ears. White Rhinoceros have square lips used for eating grass. The Black Rhino is much smaller than the White Rhino, and has a long, pointed, and prehensile upper lip, which it uses to grasp leaves and twigs when feeding. Skin color depends more on local soil conditions and the rhinoceros' wallowing behavior than anything else, so many black rhinos are typically not truly black in color. These horns are used for defense, intimidation, and digging up roots and breaking branches during feeding. Sometimes, a third smaller horn may develop. The longest known horn measured nearly 5 feet in length. Two horns on the skull are made of keratin with the larger front horn typically 50 cm long, exceptionally up to 140 cm. An adult weighs from 800 to 1364 kg (1,760 to 3,000 lb), but sometimes grows up to 1818 kg (4,000 lb), The females are smaller than the males. They also face threats from habitat changes, competing species and alien plant invasions.An adult Black Rhinoceros stands 140–170 cm (57.9–63 inches) high at the shoulder and is 3.3-3.6 m (10.8–11.8 feet) in length. The western black rhinoceros was believed to have been genetically different from other rhino subspecies. ![]() It was declared extinct by the IUCN in 2011. Despite this, they are used in Chinese medicine for an array of unrelated illnesses fueling the rhino horn trade. The western black rhinoceros (Diceros bicornis longipes) or West African black rhinoceros is an extinct subspecies of the black rhinoceros. The rhino horn is made out of simple keratin the same protein as our and all mammals’ hair and nails are made from. The black rhino has been the victim of persecution for being seen as volatile and dangerous over the 20th century, but in recent years its major threat comes from poaching for the international rhino horn trade. Their population decreased by a massive 96% between 19, the largest decline of any rhino species. The black rhino has a prehensile (or grasping) upper lip, which it uses to draw plant material into its mouth. Rhinos, along with equids and tapirs, are the only surviving members of an ancient and formerly diverse group of ungulates, which originated around 50 million years ago. Local people also depend on the natural resources within rhino habitat for food. The black rhinoceros has four subspecies, one of which was declared extinct in 2011, with two others critically endangered. This benefits other animals and keeps a healthy balance within the ecosystem.
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