Ecosystems vary from oceans to plains to frozen tundra, and North America has huge and ferocious predators. However, these modern creatures, such as crocodiles, great white sharks, and polar bears, are only slightly visible next to numerous ancient predators on the continent. So what is the biggest predator who has ever lived in North America?
When it comes to furry animals, the largest predatory mammal in North America was probably the giant short-faced bear (Arctodus simus), Los McPhee, senior curator of mammals at the American Museum of Natural History in New York City. This extinct creature, sometimes affectionately called the “bulldog bear,” had a short, wide muzzle. According to the report, the height of the shoulders was about 5.5 feet (1.6 meters), and the height of the hips of the hind legs exceeded 11 feet (3.4 meters). University of Iowa Natural History Museum..
MacPhee told Live Science in an email that accurately weighing extinct species is difficult for scientists because they need to use existing species as benchmarks to estimate their numbers. It may be. However, paleontologists comfortably estimate that short-faced bears weigh probably about 1,540 pounds (700 kilograms).modern Polar bear (((Ursus maritimusNot too far — the largest man stands about 5 feet (1.5 m) on his shoulder and weighs about 1,300 pounds (600 kg). Polar bear international..
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Short-faced bears became extinct about 11,000 years ago, towards the end of the Last Glacial Period. To find predators on larger lands, you need to travel back in time. The largest predatory North American dinosaurs are also the most famous on the continent: King, Tyrannosaurus Rex..
In the second half CretaceousAbout 100 to 66 million years ago, North America was a monster country. “Carnivorous dinosaur Had That’s incredible North American diversity throughout the Mesozoic [252 million to 66 million years ago]Andrew Farke, director of the Raymond M. Alf Paleontology Museum in Claremont, California, emailed Live Science. Acrocanthosaurus, Sharp nails Deinonychus, And slender and feathery Microvenator..
However, according to a nearly completed school bus-sized Tyrannosaurus specimen, it is approximately 12 feet (3.5 m) tall and up to 40 feet (12.3 m) long. Known as Stan, Terrible tyrant Rex It stood above most of its carnivorous contemporaries. Acrocanthosaurus, A cousin of Tyrannosaurus’s “shark teeth” and a member of a group known as Carcharodontosaurus, almost in agreement TyrannosaurusThe length of is T. It was 6.8 tons (6.1 metric tons), lighter than Rex’s 7.8 tons (7.1 metric tons). American Museum of Natural History.. Tyrannosaurus According to a 2019 study, strong jaw muscles were able to apply up to 6 tonnes (5.4 metric tonnes) of pressure per bite. This is enough to tear the steel like a piece of paper.In the journal Anatomical record..
the only The dinosaurs alive today are birdsMakes the largest living dinosaur in North America the California Condor (Gymnogyps californianus). At 10 feet (3 m) from tip to tip, this bird is significantly smaller than its ancient meat-eating cousin. TyrannosaurusBut eating the carcasses of deer, pigs, cows, sea lions and even whales, which are formidable in their own right, According to the Cornell Lab of Ornithology..
When it comes to ancient sea beasts, giant reptiles take cakes. Ichthyosaur Mesozoic, Same period as dinosaurs.At the end Triassic, About 237 million years ago, Shonisaurus sikanniensis I started swimming in the waters of what is now British Columbia, Canada.
“”S. sikanniensis Kenshu Shimada, a professor of paleontology at DePaul University in Chicago, told Live Science. There is some debate about the genus of ichthyosaurs. S. sikanniensis I belonged to: Shastasaurus Also Shonisaurus.. Members of both genera were large, streamlined, and swift, Shonisaurus The genus had a barrel-shaped chest and a long nose compared to a thin, short nose ShastasaurusAccording to Mark Whitton, a paleontologist and paleontologist at the University of Portsmouth.
Regardless of the taxonomy S. sikanniensis It was absolutely huge. The nose-to-tail length is an amazing 65 feet (20 m), “about three times as long as the largest known living great white shark,” Shimada said. However, size is not always the same as ferocity.Journal 2011 study PLOS One Proposed S. sikanniensis It may have been a suction feeder that swallows soft-bodied prey such as squid and belemnitida (squid with shells).
However, each of these creatures eventually died as a result of a catastrophic change in the environment. Like many highly specialized predators, their shortage of prey simply prevented them from keeping up with their energy needs. “At some point, the bigger it is, the worse it is,” Makfi said.
Originally published in Live Science.
What was the largest predator in North America?
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