A mammal is an animal that feeds its young milk. The ones that give birth to well-developed babies are called placental mammals. We are placental mammals and so are dogs, cows and whales.

Fossil discoveries provide valuable insights into extinct species, revealing their behaviors, environments, and relationships to modern animals. One such mystery surrounded Mixodectes pungens, a small ...

Related: Ancient marsupial sabertooth had eyes like no other mammal predator Placental mammals have a range of developmental strategies. For example, human babies are practically helpless at birth ...

"This fossil skeleton provides new evidence concerning how placental mammals diversified ... Mixodectes was quite large for a tree-dwelling mammal in North America during the early Paleocene ...

CREDIT: Chester et al. 2025 “This fossil skeleton provides new evidence concerning how placental mammals diversified ecologically following the extinction of the dinosaurs,” study co-author ...

“This fossil skeleton provides new evidence concerning how placental mammals diversified ecologically following the extinction ... Mixodectes was quite large for a tree-dwelling mammal in North ...

Mixodectes pungens, a species of small mammal that inhabited western North America in the early Paleocene, was a mystery ...