May 24, 2025 · Looking for information on the Cretaceous Period? Click here to learn about when it was, the animals, and more.

Animals of the Cretaceous. Wikimedia Commons has media related to Cretaceous Animalia. This category has the following 10 subcategories, out of 10 total.

Jul 26, 2022 · "Smaller, omnivorous terrestrial animals — like mammals, lizards, turtles or birds — may have been able to survive as scavengers feeding on the carcasses of dead dinosaurs, …

6 days ago · The lengthy Cretaceous Period constitutes a major portion of the interval between ancient life-forms and those that dominate Earth today. Dinosaurs were the dominant group of …

The Cretaceous Period lasted for nearly 80 million years. Discover what the climate was like in this geological period, where the continents were and what animals and plants lived on them.

Nov 26, 2025 · Our understanding of what animals were alive in the Cretaceous period? primarily comes from the fossil record. Fossils of dinosaurs, mammals, reptiles, birds, and invertebrates …

Though dinosaurs ruled throughout the Cretaceous, the dominant groups shifted and many new types evolved. Sauropods dominated the southern continents but became rare in the north. …

Dinosaurs both great and small moved through forests of ferns, cycads, and conifers. Ammonites, belemnites, other molluscs, and fish were hunted by great "marine reptiles," and pterosaurs …

The Cretaceous When: 144 to 65 million years ago. Animals: Reptiles still dominate land, sea and air. Dinosaurs - like Tyrannosaurus rex, Iguanodon and Triceratops - are common; pterosaurs …

The deposition of these organisms after death led to the creation of immense chalk cliffs that are found below the Iridium clay layer and marks the boundary between the Cretaceous and the …