Our understanding of mammalian reproduction is being reborn. Analysis of a 236-million-year old fossil could completely ...

A bone feature found in a mammal ancestor hints that the creature was relatively large as a newborn, more in line with the ...

Scientists have made a surprising discovery in a 125-million-year-old dinosaur fossil unearthed in China, potentially revealing a previously unknown anatomical feature in these ancient animals. The ...

Researchers studying a 250-million-year-old fossil have found the first ever proof that mammal ancestors laid eggs, with the discovery also shedding light on a remarkable survival story. The fossil, ...

Scientists have identified exceptionally rare soft tissue preserved in a 450-million-year-old crinoid fossil, more than 200 ...

A 236-million-year-old cynodont fossil from Argentina contains evidence that the animal may have given birth to live young ...

Chinese scientists studying a 244-million-year-old ichthyosaur Mixosaurus fossil from Southwest China’s Guizhou Province ...

A 236-million-year-old fossil from Argentina may have provided the earliest evidence yet that an animal on the evolutionary ...

Before this discovery, the earliest widely accepted cephalopod was Plectronoceras cambria, which lived during the late ...

Dogs have been our closest companions for several millennia now, but they’ve been around for a lot longer. Millions of years longer, in fact. As reported by the University of Michigan, researchers ...

Modern dogs are built for running long distances. Wolves, for example, can keep up a steady trot for miles because of their long legs and flexible joints.