Tighter social groups and a three-borne lifestyle likely prompted the switch.
The extinction event that wiped out the dinosaurs left many empty niches for the mammals’ taking.
The case for dinosaur warm bloodedness keeps getting stronger.
It’s all about the tail.
It’s even worse than we thought.
An asteroid impact wiped out the dominant life forms on the planet, both on land and in the oceans, some 65 million years ago. Like in all matters of life, there are winners and losers, and incidentally those who had most to profit from the demise of the dinosaurs were also the weakest: mammals. Small, battered and restricted to only a couple of ecological niches, not only were the mammals more adapted to a post-apocalyptic Earth devoid of sunshine and with little food to spare, but once everything cleared they simply took over. Now, paleontologists have come across a totally new genus of ancient mammals that used to share the planet with the dinosaurs, but managed to survive the fallout and continued its lineage for millions of years after.
The fact that the greatest biodiversity of large mammals we know of today is recorded in Africa is a legacy of past human activity, not climate or environmental phenomena, new study reveals. The paper theorizes at how the world today would look if Homo sapiens had never existed.
In a previous analysis, the researchers from Aarhus Univeristy, Denmark, they showed how the mass extinction of large mammals during the last Ice Age and the subsequent millennia, most notably the late-Quaternary megafauna extinction, is largely explainable by the expansion of modern humans across the world.
Life on Earth has so far passed through five distinct crises that threatened to wipe it out, typically referred to as mass extinctions. The direst one was some 252 million years ago when 96 percent of marine species and 70 percent of life on land became extinct following a yet unconfirmed series of cataclysmic events known as the end-Permian extinction. Mass
After the great dinosaur extinction some 65 million years ago, mammals finally had their big shot as numerous niches became free for the taking. Thus, from mouse size, some mammal species surfaced which were as large as a bus, the so called mammal megafauna, like mammoths, giant sloths or saber-tooth tigers. However, a dire trial of their own was to come. Through
A recently published study suggests that the Earth might have been visited by a giant space rock 13,000 years ago, an event which might have sparked an unusual cold period in the planet’s climate history. The Younger Dryas, also known as the Big Freeze, was a brief period of cold climatic conditions and drought which occurred some 13,000 years ago. Scientists
Around 140 millions years ago, mammals didn’t even outsize a modern day mouse, as dinosaurs dominated Earth’s crowded surface. As the latter became extinct, a myriad of free ecosystems and niches opened up, including those once dominated by giant plant eating dinosaurs, and mammals where quick to fill these up. After compiling and analyzing a fossil record data set of
Humans, as well as most mammals, have only two sets of teeth to make with during their entire lifetime. However, a new research published in the journal Proceedings of the National Academy of Sciences, which studied the dental structure of mole rats has shown that the species is an exception to this rule. In fact, they’re very much similar to
Common sense might tell you that only mammals are capable of lactating, it’s a little know fact, however, that some species of birds are also capable of making milk for their young. The common pigeon produces milk in its crop, located near the esophagus, to feed its young. Scientists have long been wondering how the lactating process takes place for
A recently published study 8 years in the making reveals the uncanny ability humpback whales have of following seemingly perfect straight paths for weeks at a time. The navigational precision of humpback whales cannot be explained by known theories. Humpback whales feed during the summer near polar oceans and migrate to warm tropical oceans for the winter, where they mate
The previous 5 mass extinctions wiped out more than three quarters of the world’s animals, and if things continue to move in the same way, the same thing will happen in North America, according to a University of California, Berkeley, and Pennsylvania State University analysis. Numerous scientists have warned that the direction things are moving in is way more dangerous