Top 5 Extinct Animals on the Planet

Mammoths

They dwelt in Africa, Europe, Asia and North America about 4,500 years ago. The woolly mammoth was the last species of this genus.
Much like their relatives, mammoths were rather large with all the height of 4m and weight up to 8 tonnes. Based upon the species or race of mammoth, the diet differed somewhat based on location, although all mammoths ate similar items like cacti leaves, trees, herbs, larch and shrubs.

Lesser Bilby
The lower bilby also referred to as the yallara, the lower rabbit-eared bandicoot or the white-tailed rabbit-eared bandicoot. The species was described by Oldfield Thomas at 1887. Considering that the 1950s-1960s it has been considered to be extinct. The lower bilby was a medium-sized marsupial having a body mass of 300 to 450 grams. The tail of the animal was extended, about 70 percent of its total head-body span. The lower bilby was an omnivore feeding on ants, termites, seeds, roots etc..

Broad-faced Potoroo
The broad-faced potoroo is also an extinct species of marsupial and this species survived in Australia. Preserved specimens indicate that it was smaller than another potoroos at around 24 cm long with an 18-cm tail. The coat was grizzled gray above and filthy white under, the entire body similar in shape to that of a large rat. The habits of this broad-faced potoroo are almost completely unknown. The first specimen was collected in 1839 and explained by John Gould at 1844, but even then it was rare.

Megaladapis
Megaladapis also referred to as koala lemur. It's an extinct genus belonging to the family Megaladapidae. The largest measured between 1.3 to 1.5 m length. Megaladapis was rather different from any dwelling lemur. Its entire body was squat and constructed like that of their contemporary koala. Its extended arms, arms, feet and toes were specialized for grasping trees and its own legs were splayed for vertical climbing. Its own body weight reached 50 kilograms. They have been also slow-moving creatures that were active throughout the day.

Homotherium
Homotherium is an extinct genus of machairodontine saber-toothed cats. They dwelt from North America, South America, Eurasia, and Africa. It became present for approximately 5 million years. The height of this Homotherium reached 1.1 m and weight was 150--225 pound. The size of Homotherium was about the size of a male African lion. They have been flat, serrated and more than those of any living cat.