Determining the mutation rate of cetaceans is not an easy task, as it is difficult to locate and sample them. Photo: Julia Hager Before commercial whaling began, the number of humpback whales in the North Atlantic was apparently 86 percent lower than previously...
This is Chionodraco hamatus which belongs to the group of ice fish, the Notothenioides. A group of animals that make up 95% of the biomass of Antarctica between 0 and 3,000 meters depth. Image: Marrabbio2 / Wikimedia The ice fish Chionodraco hamatus has acquired the...
The reconstruction of the two newly described penguin species illustrates the size of the giant penguin Kumimanu fordycei versus the much smaller Petradyptes stonehousei. Image: Simone Giovanardi One of two species of prehistoric penguins newly discovered in New...
Aside from living in trees, there is nothing in Ignacius dawsonae to suggest that a related species would evolve into the ancestors of primates, and thus us. But this and the sister species Ignacius mckennai are among the Primatomorpha, ancestors of primates, and are...
Here in Independence Fjord in North Greenland, buried in the ground and covered by ice and snow, samples provided Kurt Kjaer and Eske Willersley’s team with a view of the region going back 2 million years, setting completely new standards. Photo: NASA In the...