Early Mammals News
April 30, 2017

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More Early Mammals News
April 30, 2017

Feb. 16, 2017 — Hidden in the development of opossums is one possible version of the evolutionary path that led from the simple ears of reptiles to the more elaborative and sensitive structures of mammals, including ... read more

Feb. 14, 2017 — A remarkable 250-million-year-old 'terrible-headed lizard' fossil found in China shows an embryo inside the mother -- clear evidence for live birth. The fossil unexpectedly provided the ... read more

Feb. 7, 2017 — The terminal Pleistocene/Holocene boundary represented a major ecological threshold for humans, both as a significant climate transition and due to the emergence of agriculture around this time. In ... read more

Genomes in Flux: New Study Reveals Hidden Dynamics of Bird and Mammal DNA Evolution

Feb. 6, 2017 — Evolution is often thought of as a gradual remodeling of the genome, the genetic blueprints for building an organism. But in some instance it might be more appropriate to call it an overhaul. Over ... read more

Jan. 12, 2017 — The ghosts of Ice Age mammals can teach valuable, real-world lessons about what happens to an ecosystem when its most distinct species go extinct, according to a new ... read more

Retroviruses 'Almost Half a Billion Years Old'

Jan. 10, 2017 — Retroviruses -- the family of viruses that includes HIV -- are almost half a billion years old, according to new research. That's several hundred million years older than previously thought and ... read more

Dec. 22, 2016 — A new study is the first to draw a link between RBC size and microscopic traces of blood vessels and bone cells inside bones. They found that extinct mammal and bird relatives had smaller RBCs and ... read more

Dec. 8, 2016 — An extinct mammal relative harbored a benign tumor made up of miniature, tooth-like structures, paleontologists report. The tumor, a compound odontoma, is common to mammals today. But this animal ... read more

Dec. 8, 2016 — A new study by paleontologists describes an early marsupial relative called Didelphodon vorax that lived alongside ferocious dinosaurs and had, pound-for-pound, the strongest bite force of any mammal ... read more

Nov. 30, 2016 — The origin of filter feeding in baleen whales -- the largest animal known to have ever existed -- is now better understood, thanks to research on 'Alfred' the 25- million-year-old ... read more

Nov. 21, 2016 — By charting the slopes and crags on animals’ teeth as if they were mountain ranges, scientists have created a powerful new way to learn about the diets of extinct animals from the fossil record. ... read more

Diaphragm Much Older Than Expected

Nov. 18, 2016 — Caseids are "mammal-like" reptiles that lived about 300-250 million years ago. They had a barrel-shaped trunk, but scientists have struggled to realize how these reptiles breathed. New ... read more

Nov. 15, 2016 — A team of geneticists demonstrated that the emergence of mammary glands in placental mammals and marsupials results from recycling certain 'architect' genes. The latter, known as Hox genes, ... read more

Nov. 9, 2016 — Using 3D-printed replicas of 200-million-year-old mammal teeth and polymers that mimic insect prey, scientists provide the first laboratory-tested evidence that the ability for teeth to damage prey ... read more

Nov. 4, 2016 — Herbivorous mammals have bigger bellies than their usually slim carnivorous counterparts, an international study based on 3D reconstructions of animal skeletons reveals for the first time. In ... read more

Neanderthals on Cold Steppes Also Ate Plants

Oct. 27, 2016 — Neanderthals in cold regions probably ate a lot more vegetable food than was previously thought, according to new research on ancient Neanderthal dental ... read more

Oct. 18, 2016 — Ancient DNA research has revealed that Ice Age cave artists recorded a previously unknown hybrid species of bison and cattle in great detail on cave walls more than 15,000 years ... read more

Sep. 29, 2016 — Humans occupied South America earlier than previously thought, according to the recent discovery of ancient artifacts found at an archeological site in ... read more

Sep. 19, 2016 — Scientists have unearthed an exceptionally well preserved fossil of a complete mammoth skull from an eroding stream bank on Santa Rosa Island within Channel Islands National ... read more

Sep. 15, 2016 — For more than 20 million years, the ups and downs of diversity in terrestrial large mammals were determined by primary production, i.e. net production of plant biomass. This pattern changed with the ... read more

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