Extinction

With its disappearance, "we sort of lost a piece of the biodiversity puzzle that made up the tapestry of the San Francisco Bay area," a study co-author said.

Marine biologists estimate that only 10 of the highly endangered animals remain alive as a result of illegal fishing in their native waters.

A look back at the breeds, from ancient to modern eras, that did not stand the test of time.

A "four-legged fossil fish" predating dinosaurs has been recently rediscovered by groups hunting sharks with deep-sea nets.

They are among a quarter of mammals which have been placed on an official "red list" of endangered species in the country, the first of its kind.

"When humanity exterminates species of other creatures, it is sawing off the limb on which it is sitting, destroying working parts of our own life-support system," said biologist Paul Ehrlich.

It is not a coincidence that Neanderthals vanished just at the time, when Homo sapiens started to spread into Europe" said research lead Axel Timmermann, director of IBS Center for Climate Physics.

The dinosaur is one of the largest and youngest megaraptors on the fossil record, say paleontologists.

Tasmanian tigers are among the largest carnivorous marsupials known to science.

Scientists were examining what impact marine megafauna extinctions will have on oceans.

Large herbivores dominated the Earth's land ecosystems for several million years before suffering significant extinctions and declines over the past 100,000 years or so.

"We are beginning to transition and go through the extinction," study author David Gruber said. "Who comes out the other side is up for grabs."

The megalodon could reach lengths of 48 to 60 feet and went extinct approximately 3 million years ago. A fossil of the prehistoric shark was found washed up in the sands of the Cayman Islands.

We figured out how to tread more lightly on our planet, even as we become more numerous and prosperous, but very few people are aware that the apparently ironclad trade-off between human prosperity and the state of nature has been eased.

Nearly two-thirds of likely New Hampshire Democratic primary voters said they would prefer a life-extinguishing meteor strike against the Earth over President Trump being re-elected in November.

The duck-billed mammal is currently listed as Near-Threatened on the IUCN Red List.

New research adds more weight to the theory that the asteroid caused dinosaur extinction.

Thousands of species could go extinct by the end of the decade.

Computer simulations suggest Neanderthals were already on the brink of extinction and had been for hundreds of thousands of years when demographic fluctuations and inbreeding pushed them over the edge.

New research into the global donkey population indicates that the trade in the animal's skins has exploded to such a level that they face population collapse.

"The lives of many people and the existence of diverse species hang in the balance," said an author of the study.

The US Fish and Wildlife Service recently designated Southern Mountain Caribou as an "endangered species"—except, in the lower 48 states, they're technically already extinct.

For animal species to survive climate change, they will have to genetically adapt or shift their ranges—or both.

H. Terminalis is among nine newly identified bee species which are described in a study published in the journal Zootaxa.

Scientists believe that the Earth is currently going through its sixth mass extinction event.

Once a koala population falls below a critical point, it can no longer produce the next generation, leading to extinction.

"We didn't start doing them to not do them," David Bernhardt said of his policies to limit protections for threatened animals and to factor the cost to corporations into protecting endangered species in an interview with The Washington Post published Friday.

There are only 144 kakapos left in the world.

Researchers have found that invasive birds play a critical role in the ecosystem of the Hawaiian island of Oahu, where native species have almost totally disappeared.

Insect numbers everywhere are declining—and scientists aren't exactly sure why.