Around 20% of the world's land mammal species are at risk of extinction, and many others may vanish before they are even known to science, according to a major annual survey of global wildlife
... and half the known species appear to be losing rather than gaining population. For land mammals, destruction or degradation of their habitats is the biggest threat, while marine mammals suffer more ...
... is positioned for head-first delivery, like land mammals but unlike modern whales, indicating that these whales still gave birth on land.
Another clue to the whales' lifestyle is the well-developed ...
... the solenodon, an endangered large shrew-like mammal that kills its prey with a venomous bite. A new project aims to help conserve two types of endemic land mammal in the Dominican Republic.
... Eocene, when Antarctic glaciations began, did Earth's climate deteriorate enough to cause observable changes in land mammal diversity.
"Our paper documents the fact that global change ...
... million Euros) to preserve Madagascar's rich biodiversity, WWF has announced. Nearly 98 percent of Madagascar's land mammals, 92 percent of its reptiles, and 80 percent of its ...
... possibly as early as 19 million years ago because fossils that are closely related to North American land mammals, such as rhinos, horses, peccaries and dogs have been found ...
... future.
Perhaps in response to the environmental stress of the PETM, many land mammals in North America became dwarfed. Almost half of the common sea bottom-dwelling microorganisms known ...
... -term breeding area for seals and other marine mammals, like Mexico's Scammon's lagoon is for the California ... a volcanic catastrophe unlikely, while the presence of land mammal fossils makes red tide ...
... of whales, seals, sea turtles, sharks and land mammals.
What caused the collection of millions of ... bites. A lack of volcanic sediments and presence of land mammal remains further support the deposit- ...
... the arrival of humans New Zealand had no native land mammals, but was home to moa, giant flightless birds, closely related to the modern ostrich and the top herbivore predator in ...
... s "great evolutionary laboratories" due to the absence of land mammals and the radiation of giant flightless birds ... Southern Alps.
"When the seaway was first bridged by land around 1.5 million years ...
... arms and legs under the body like a land mammal instead of sprawled out to the sides, bellies ... crocs," Larsson said, "because active hunting on land usually requires more brain power than merely ...
