There’s several reasons that animals go extinct, in more recent years it’s generally because of human intervention. From building homes to devastating rainforests and other ecosystems with climate change, our animal kingdom shrinks by the year. Epidemic, disease, and even acid rain can inhibit animals from surviving, even cosmic radiation can come into play.

Despite all of these factors the biggest interference in the animal kingdom comes from climate cooling and heating as well as changes in sea levels or currents.

Some extinction is a form of speciation, where an animal adjusts to ecological settings and evolves, leaving the former species to go extinct.

Tons of animals became extinct before humans even existed, like giant sea predatory monsters or dinosaurs. When the ice age came several of these enormous species died off, which is probably one reason that humans were able to survive enough to evolve where we’ve gotten to today.

Ecologists and biologists study the past, present, and future trends that may affect the animal kingdom since human beings are, in fact, a part of it. More than 99% of all the 5 billion species that have ever existed are now extinct.

These are some of the largest, most terrifying, predatory ones that we could find.

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1. Basilosaurus


About 34 to 40 million years ago the Basilosaurus was a gigantic whale, but when the fossil was discovered scientists thought that it was a reptile hence the suffix, status. Later the fossil, discovered in the United States, was found to be a marine animal. Although Richard Owen tried to rename the whale Zeuglodon, but according to taxonomic rules the first name stuck. This species is the state fossil of Alabama and Mississippi even though the first Basilosaurus fossils were found in Jordan and Egypt. Modern whales are said to be one of the most intelligent and social creatures in the ocean, but the Basilosaurus is said to have a much smaller brain than their modern counterparts. An interesting makeup of the inner ear implies that the Basilosaurus can hear directionally underwater using acoustic isolation. The bite of the Basilosaurus exerted 16,400 to 20,000 pounds per square inch which is the strongest bite force of any organism including the T. Rex.

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