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ShareThe Cretaceous period is one of the major divisions of the geologic timescale, reaching from the end of the Jurassic period, about 146 million years ago (Ma), to the beginning of the Paleocene epoch of the Tertiary period (65.5 Ma).
The end of the Cretaceous also defines the boundary between the Mesozoic and Cenozoic eras.
For more information about the topic Cretaceous, read the full article at Wikipedia.org, or see the following related articles:
Mesozoic — The Mesozoic Era is one of three geologic eras of the Phanerozoic eon. The Mesozoic includes three geologic periods: from oldest to youngest, they ... > read more
Cenozoic — The Cenozoic Era is the most recent of the four classic geological eras. The Cenozoic is divided into two periods, the Palaeogene and Neogene, and ... > read more
Jurassic — The Jurassic period is a major unit of the geologic timescale that extends from about 200 Ma (million years ago) at the end of the Triassic to 146 Ma ... > read more
Cretaceous-Tertiary extinction event — The Cretaceous-Tertiary extinction event was a period of massive extinction of species, about 65.5 million years ago. It corresponds to the end of ... > read more
Extinction event — An extinction event (also extinction-level event, ELE) occurs when a large number of species die out in a relatively short period of time. Since life ... > read more
Paleozoic — The Paleozoic Era is a major division of the geologic timescale, one of four geologic eras. The Paleozoic includes six geologic periods; from oldest ... > read more
Permian-Triassic extinction event — The Permian-Triassic (P-T or PT) extinction event, sometimes informally called the Great Dying, was an extinction event that occurred approximately ... > read more
Gondwana — The southern supercontinent Gondwana (originally Gondwanaland) included most of the landmasses which make up today's continents of the southern ... > read more
Chicxulub Crater — Chicxulub Crater is an ancient impact crater buried underneath the Yucatan peninsula, with its center located approximately underneath the town of ... > read more
Geologic temperature record — This article is devoted to temperature changes in Earth's environment as determined from geologic evidence on multi-million to billion (109) year ... > read moreNote: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Cretaceous at Wikipedia.org. See the Wikipedia copyright page for more details.
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