what is the aforesaid period mentioned?
The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretaceous geological period is divided in the geologic time scale.
Late Cretaceous
The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretaceous geological period is divided in the geologic time scale.
fossil cretaceous creature that was first found in alberta canada Albertosaurus what is this? It  is a genus of tyrannosaurid theropod dinosaurs that lived in western North America during the Late Cretaceous Period, about 70 million years ago how did its name given? It was named by Henry Fairfield Osborn.
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Late Cretaceous [SEP] Introduction
The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretaceous geological period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous series. The Cretaceous is named after the white limestone known as chalk which occurs widely in northern France and is seen in the white cliffs of south-eastern England, and which dates from this time.