Late Cretaceous Totally Explained

Everything about Late Cretaceous totally explained

Late Cretaceous (100mya - 65mya) refers to the second half of the Cretaceous Period, named after the famous white chalk cliffs of southern England, which date from this time. Rocks deposited during the Late Cretaceous Period are referred to as the Upper Cretaceous Series.

Dinosaurs

This was a period of great success for dinosaurs, with many new types appearing and diversifying, such as the Tyrannosaurs, duck bills, Ankylosauridae, and horned dinosaurs in Asiamerica (Western North America and eastern Asia), and Titanosaurs and Abelisaurs in Gondwana.

Birds

Birds became increasingly common and diverse, replacing the pterosaurs which retreated to increasingly specialised ecological niches.

Marine Life

In the seas, mosasaurs suddenly appeared and underwent a spectacular evolutionary radiation. Modern sharks also appeared and giant-penguin-like polycotylid pliosaurs (3 meters long) and huge long-necked elasmosaurs (13 meters long) also diversified. These predators fed on the numerous teleost fishes, which in turn evolved into new advanced and modern forms (Neoteleostei).

Flowering Plants

Near the end of the Cretaceous Period, flowering plants diversified and didelphid marsupials and primitive placental mammals also became common.

KT Mass Extinction

The period was ended by the Cretaceous-Tertiary extinction event.

Further Information

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