3 min read Continents were on the move in the Cretaceous, busy remodeling the shape and tone of life on Earth ... long-necked and toothy marine reptiles terrorized fish, ammonites, and mollusks ...
The Cretaceous period, specifically from the Barremian ... Cretoxyrhina dominated its marine environment during a time characterized by high sea temperatures and ecological complexity.
Today, Antarctica is a huge frozen continent, though it was once temperate enough to be covered in swampy forests. Now, a team of scientists has discovered fossilized tree resin—amber—on the continent ...