Butterflies of this species are now extinct.

The dodo is an already extinct species.

The dodo is an already extinct species.

We added species that are probably extinct, too.

This species of butterfly has already gone extinct.

Looking around, leaders like this seem to be an extinct species.

Extinct or endangered species are indicators of a much bigger problem.

Indeed, many complex species lost the war with microbes to become extinct.

There are a total of about 7,000 extant species of echinoderm as well as about 13,000 extinct species.

The danger is not at all unprecedented. Species go extinct all the time.

Today s bio diversity crisis is not just one of lost habitats and extinct species.

Biological networks change, chemical balances change, species go extinct, ecosystems unravel, and new ones emerge.

90 to 95 of marine species became extinct, as well as 70 of all land organisms.

To focus on how many species have become extinct, or will go extinct, obscures the fact that a large number of species have become greatly contracted in the range of their habitats, primarily due to human activity.

Every year, more species many of them not even named become threatened with extinction or go extinct.

The island was home to a now extinct endemic species of flightless bird, the Rodrigues solitaire ( Pezophaps solitaria ).

To focus on how many species have become extinct, or will go extinct, obscures the fact that a large number of species have become greatly contracted in the range of their habitats, primarily due to human activity. We appropriate land and resources for our purposes, release harmful wastes, and introduce alien species that displace natives.

For this reason, some colleagues and I have calculated the rate at which bird species became extinct in the recent past and the rate at which they will likely become extinct in the future.

Dinosaurs are now extinct.

Independent media are practically extinct.

The Muisca language is officially extinct.

Temperatures will rise, storms will intensify, the oceans will become more acidic, and species will go extinct in vast numbers as their habitats are destroyed.

From left to right, we've got Homo erectus, Homo habilis, and Australopithecus now called Paranthropus boisei, the robust australopithecine. Three extinct species, same place, same time.

Volcanoes can be active, dormant, or extinct.

Flora includes 909 species, including 645 species of vascular plants, 151 species of fungi, 48 species of lichens, 65 species of moss.

Fossils of extinct Panthera species, such as the European jaguar ( Panthera gombaszoegensis ) and the American lion ( Panthera atrox ), show characteristics of both the lion and the jaguar.

There are 212 mammal species, 536 bird species, 240 reptile species, 850 freshwater fish species (Tonle Sap Lake area), and 435 marine fish species.

In The Descent of Man, he wrote, In each great region of the world, the living mammals are closely related to the extinct species of the same region.

Present day extinction rates are 100 1000 times greater than the background rate and up to 30 of current species may be extinct by the mid 21st century.

There are 62 species of mammals, more than 270 species of birds, 39 species of fishes, 6 species of reptile and 9 species of amphibians.

One goes extinct for the other to survive.

This custom became extinct a long time ago.

Dinosaurs became extinct a very long time ago.

A species that gives rise to another species is a paraphyletic species, or paraspecies.

We added species that are probably extinct, too. With these two adjustments, the extinction rate has been about a 100 times higher than natural over the last two centuries.

That's a good number to go extinct, I think.

There's six million species of insects on this planet, six million species.

We nearly went extinct. We were hanging on by our fingernails.

Many animals that lived thousands of years ago are now extinct.

The Wealth of Species

Every species does it.

It contains two species.

Most of the languages are endangered, and several are moribund or extinct.

Evolution has generated many species.

It is an endangered species.