Extinct Animals True or False

It actually belonged to the family Columbidae, otherwise known as pigeons and doves.

This allowed it to hunt aquatic as well as terrestrial prey.

There were several other species living at that time, including Denisovans and Homo floresiensis, as well as the other great apes (which are also classified as hominids).

The bird, Gastornis, grew up to two metres tall and was flightless, though a formidable predator. However, the horses that it fed on were quite small, only about the size of a large dog.

The difference isn't huge, but the icthyosaur Shastasaurus could grow as large as 21 metres, while sperm whales max out at 20.7

The Cambrian animal Opabinia had five eyes, as well as a proboscis and a backwards-facing mouth under the head. Some modern spiders of the family Caponiidae can also have five eyes.

Prehistoric pig-like mammals called Entelodonts are sometimes referred to as terminator or hell pigs. They could stand up to 2.1 metres at the shoulder and were ferocious predators, though they also ate vegetation. .

Mammuthus creticus is also known as the Cretan dwarf mammoth. It had a shoulder height of about one metre and wasn't that much longer. On the other hand, Josephoartigasia monesi is the largest rodent to have ever lived, at 1.5 metres tall and 3 metres long.

They date from around the same time, 55 million years ago.

It was a millipede, Pneumodesmus newmani.

The whale in question, Livyatan melvillei, a hyper-predatory prehistoric sperm whale.

Despite the giant short-faced bear being the largest bear to ever exist (1.8 metres tall when on all fours), the species of this genus could possibly run at up to 40mph, even faster than modern bears: this was due to their long legs.

That is, as far as we know. However, the fossil of one reptile belonging to the group Protorosauria, called Dinocephalosaurus, has been found with a fetus inside its womb, suggesting that it may have given birth to live young.

These animals were all part of the group known as Synapsida, which includes mammals, though they evolved later in the late Triassic.

The last one died in 1936. However, several mammal species have gone extinct since then, the most recent being the Bramble Cay melomys, which became extinct in 2016.