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In the same paper, it is suggested that in a population of Tyrannosaurus adults numbering 20,000, the number of individuals living in an area the size of California could be as high as 3,800 animals, while an area the size of Washington D.C. could support a population of only two adult Tyrannosaurus. The study does not take into account the ...
Tyrannosaurus was named by Henry Fairfield Osborn in 1905, along with the family Tyrannosauridae. [17] The name is derived from the Ancient Greek words τυραννος tyrannos ('tyrant') and σαυρος sauros ('lizard'). The superfamily name Tyrannosauroidea was first published in a 1964 paper by the British paleontologist Alick Walker. [18]
The holotype was named as Tyrannosaurus bataar by Evgeny Maleev as Tyrannosaurus bataar. [7] The genus Tarbosaurus was also described in the same year based on PIN 551–2, a specimen with a skull and skeletal remains discovered by the same expedition in 1948 and 1949 as Tarbosaurus efremovi. [8]
It appears this Tyrannosaurus was about 13-15 years old, two-thirds adult size, 25 feet (7.6 meters) long and 3,500 pounds (1,600 kg). T. rex was fully grown at around 18-21 years.
Interesting facts for adults. ... Interesting facts for kids. Bats are the only flying mammals. Tomatoes are a fruit, not a vegetable. Chihuahuas are the smallest dog breed.
The debate about whether Tyrannosaurus was a predator or a pure scavenger is as old as the debate about its locomotion. Lambe (1917) described a good skeleton of Tyrannosaurus ' s close relative Gorgosaurus and concluded that it and therefore also Tyrannosaurus was a pure scavenger, because the Gorgosaurus ' s teeth showed hardly any wear. [126]
The researchers found that mountain lions of Los Angeles are shifting their activities, avoiding typically human-frequented spaces to maintain a safe distance. Image credits: an1malpulse #5
Tyrannosaurus rex: Casper the T. rex: Chinley [178] [179] [180] Tyrannosaurus: Previously known as the Mud Butte Tyrannosaur Chomper MOR 6625 Museum of the Rockies: Tyrannosaurus: Juvenile skull, named for initial find of small lower jaw fragment. Cast of Chomper in Berkeley Square: C-rex MOR 1126 Museum of the Rockies: Tyrannosaurus rex ...