New skull of tube-crested dinosaur reveals evolution of bizarre crest

IMAGE: New skull of Parasaurolophus as originally exposed in the badlands of New Mexico. Credit: Copyright Doug Shore, Denver Museum of Nature & Science. Usage restrictions: This image may be used… view more  Credit: Copyright Doug Shore, Denver Museum of Nature & Science. DISCOVERY BRIEF: The first new skull of a rare species of the dinosaur […]

From fins to limbs | EurekAlert! Science News

When tetrapods (four-limbed vertebrates) began to move from water to land roughly 390 million years ago it set in motion the rise of lizards, birds, mammals, and all land animals that exist today, including humans and some aquatic vertebrates such as whales and dolphins. The earliest tetrapods originated from their fish ancestors in the Devonian […]

Like plants do: non-classical photosynthesis by earth’s inorganic semiconducting minerals

IMAGE: Earth-abundant minerals convert sunlight into chemical energy, hinting at the evolution of photosynthesis in early bacteria view more  Credit: Earth Science Frontiers Photosynthesis, the process by which plants and other organisms convert sunlight into chemical energy, has been a major player during the evolution of life and our planet’s atmosphere. Although most of the ins […]

Megalodons gave birth to large newborns that likely grew by eating unhatched eggs in womb

IMAGE: Identified annual growth bands in a vertebra of the extinct megatooth shark Otodus megalodon along with hypothetical silhouettes of the shark at birth and death, each compared with size of… view more  Credit: DePaul University/Kenshu Shimada A new study shows that the gigantic Megalodon or megatooth shark, which lived nearly worldwide roughly 15-3.6 million years […]

Oldest hominins of Olduvai Gorge persisted across changing environments

IMAGE: Olduvai (now Oldupai) Gorge, known as the Cradle of Humankind, is a UNESCO World Heritage site in Tanzania. New interdisciplinary field work has led to the discovery of the oldest… view more  Credit: Michael Petraglia Olduvai (now Oldupai) Gorge, known as the Cradle of Humankind, is a UNESCO World Heritage site in Tanzania, made famous […]

Research explains why crocodiles have changed so little since the age of the dinosaurs

IMAGE: The crocodiles have had a much greater diversity of forms in the past. Examples include fast runners, digging and burrowing forms, herbivores, and ocean-going species view more  Credit: University of Bristol New research by scientists at the University of Bristol explains how a ‘stop-start’ pattern of evolution, governed by environmental change, could explain why crocodiles […]

Early mammal with remarkably precise bite

IMAGE: The investigated dentition of P. fruitaensis. The upper molars (M2, M3) are offset from the lower ones (m2, m3). This causes the cusps to interlock in a way that creates… view more  Credit: © Thomas Martin, Kai R. K. Jäger / University of Bonn Paleontologists at the University of Bonn (Germany) have succeeded in reconstructing […]

Study resolves the position of fleas on the tree of life

A study of more than 1,400 protein-coding genes of fleas has resolved one of the longest standing mysteries in the evolution of insects, reordering their placement in the tree of life and pinpointing who their closest relatives are. The University of Bristol study, published in the journal Palaeoentomology, drew on the largest insect molecular dataset […]

The ‘crazy beast’ that lived among the dinosaurs

Adalatherium is an important piece in a very large puzzle on early mammalian evolution in the southern hemisphere, one in which most of the other pieces are still missing New research published today in the Journal of Vertebrate Paleontology describes a bizarre 66 million-year-old mammal that provides profound new insights into the evolutionary history of […]