Relatively little is known about Denisovans, an extinct group of human cousins that interacted with Neanderthals and Homo ...

while a large number of invertebrates of notable scientific significance have become either endangered or extinct due to deforestation, especially because of the rapid destruction of tropical ...

More than 95% of Australian animals are invertebrates (animals without backbones—spiders, snails, insects, crabs, worms and others). There are at least 300,000 species of invertebrate in Australia.

This particular species was once a common sight in Tahiti, but now the International Union for Conservation of Nature considers it extinct in the wild as the snail is primarily found in captivity ...

In the mid-1980s, the species was officially declared extinct in the wild ... senior curator of invertebrates at the Zoological Society of London and head of the international Partula conservation ...