Feb 12 (Reuters) - Environmental groups on Monday petitioned the U.S. government seeking endangered species protection for the American horseshoe crab, a "living fossil" under threat from commercial ...

With their helmet-shaped shells and spiky tails, horseshoe crabs are “living fossils” that look much the same today as they did 450 million years ago. For countless millennia, horseshoe crabs living ...

A grassroots group of conservationists in Indonesia are racing to help preserve the horseshoe crab, an otherworldly, marine living fossil. Fossils resembling modern horseshoe crabs have been found as ...

Predating dinosaurs, the horseshoe crab has roamed the earth for 445 million years, surviving five mass extinctions and three ice ages, but overfishing and habitat loss pose the greatest challenge yet ...

Most of the horseshoe crabs in those eggs will never even make it to the larval stage before they are eaten.If any eggs do survive, the baby horseshoe crabs will soon take off toward the ocean and ...

Horseshoe crab populations have crashed and their habitat is disappearing. Advocates say Endangered Species Act protections are urgently needed.(Courtesy Gregory Breese/USFWS) When you walk down the ...

Hundreds of millions of years later, these species are nearly indistinguishable from their prehistoric ancestors. A horseshoe crab is seen swimming along the sea floor in coastal waters surrounding ...

One of the creepiest, crawliest creatures of the Earth may have been swimming before adapting to live on land, new research suggests. Spiders and their arachnid relatives may have actually originated ...