Like people, ants have often fought over food and territory. But ants began fighting long before humans: at least 99 million years ago, according to Phillip Barden, a fossil insect expert who works in the Insect and Evolution Lab of Jessica L. Ware, an assistant professor in the Department of Biological Sciences at Rutgers University-Newark.
New research by the University of Colorado Boulder and the Chinese Academy of Sciences confirms there really was a giant, flightless bird with a head the size of a horse's wandering about in the winter twilight of the high Arctic some 53 million years ago.
Scientists have inventoried and categorized Earth's 2,550 rarest mineral species, each sampled from five or fewer sites. Individually, several of the species have a known supply worldwide smaller than a sugar cube. In a paper for the journal American Mineralogist, Robert Hazen of the Carnegie Institution and Jesse Ausubel of Rockefeller University say rare minerals provide valuable insights into the sub-surface conditions and elements that created them, and into the planet's past biological upheavals.
Researchers from the UAB, the Miquel Crusafont Catalan Institute of Palaeontology (ICP), and the Jaume Almera Institute of Earth Sciences (CSIC), working in the Manyanet Valley (Lleida), have identified various tracks made by tetrapods between 280 and 290 million years ago, which makes them the most ancient fossil footprints in Catalonia. They correspond to different groups of primitive reptiles and amphibians, among which are synapsids, the group that would later give rise to the mammals.
Two new hominin specimens, a finger bone and a molar, that were found in South Africa's Sterkfontein Caves seem to be from early hominins that can be associated with early stone tool-bearing sediments that entered the cave more than two million years ago.
Gabriele Saleh, a research fellow at MIPT, and Prof. Artem Oganov, a Laboratory Supervisor at MIPT and Professor at the Skolkovo Institute of Science and Technology (Skoltech), derived a simple model and formulated the basic principles of stability of 'forbidden' by classical chemistry high-pressure substances.
When water interacts with magma, it can dramatically increase the explosivity of the eruption. However, water in the eruption cloud can also increase the rate at which the particles aggregate into larger clumps, allowing them to settle out faster. The five-week-long 2008 Okmok eruption in the Aleutian Islands of Alaska was explosive due to the interaction of the magma with the abundant water inside the caldera.
Considerably more of the fossil record of creatures such as mammoths, mastodons, camels, horses and ground sloths has been lost in what is now the continental United States and South America than in Alaska and areas near the Bering Strait.
Isotope analysis of 2,000-year-old skeletons buried in Imperial Rome reveal some were migrants from the Alps or North Africa, according to a study published Feb. 10, 2016 in the open-access journal PLOS ONE by Kristina Killgrove from University of West Florida, USA, and Janet Montgomery from Durham University, UK.
For more than 70 years, fossilized arthropods from Quercy, France, were almost completely neglected because they appeared to be poorly preserved. With the help of the Synchrotron Radiation Facility ANKA at the Karlsruhe Institute of Technology (KIT), an international and interdisciplinary team of researchers with substantial participation from the University of Bonn has now been able to X-ray the 30-million-year-old beetle fossils.