Researchers working in China have unearthed the fossil remains of two diminutive mammals that speak volumes about faunal diversity during the Jurassic Period. By using genetic material from two male ...

Rare Palm-Sized Underground Mammal Captured for the First Time, Researchers Call It an Underappreciated Species A palm-sized ...

Descended from more archaic relatives, the early true mammals were mainly small insect-eating creatures adapted to nighttime activity. They ranged in size from scarcely bigger than a bumblebee to ...

Paleontologists have known for decades that mammals emerged from a broader, diverse group of creatures called synapsids. The ...

Amniotes split into the sauropsids (leading to birds and reptiles) and synapsids (leading to mammal-like reptiles). These small early mammals developed hair, homeothermy, and lactation (red lines).

Paleontologists first dismissed this unlikely connection ... "The key to survival was to be small." Mammals fit that profile. They suddenly found themselves in a world without large carnivores.

The first thing is that all mammals have hair ... Not much hair, just a few bristles, but it's still there. Some mammals are small and live near you, like dogs and cats who have soft hair or ...

Young deer mice become sexually mature at 35-60 days, and females may produces litters by the end of their first summer. Mortality of young is high, and even adults seldom live more that 1-21/2 years, ...

As a master’s student at Indiana University a few years ago, David Grossnickle became fascinated with the evolution of early mammals. His dissertation project involved comparing the skulls of modern ...

The paper, by C.-F. Zhou at Shenyang Normal University in Shenyang, China, and colleagues was titled, "New Jurassic mammaliaform sheds light on early evolution of mammal-like hyoid bones." ...