cretaceous
IPA: krɪtˈeɪʃɪs
Root Word: Cretaceous
noun
- (geology) The geologic period within the Mesozoic era that comprises lower and upper epochs from about 146 to 66 million years ago.
adjective
- Of or relating to chalk.
- Consisting of chalk.
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Examples of "cretaceous" in Sentences
- The Ed Leith Cretaceous Menagerie.
- Low diversification in the Cretaceous.
- Something is either Cretaceous or it's not.
- An armored dinosaur from the Cretaceous of yoming.
- And all the bird species in the Cretaceous period.
- Cretaceous sedimentation continued in the Perth Basin.
- Cretaceous sedimentation continued in the Surat Basin.
- The shell is subimperforate, globose, solid and cretaceous.
- It contains rocks originally from the Paleozoic to the Cretaceous.
- The mid-cretaceous “saurian sauna” – no ice at sea level at poles.
- Fast forward to the mid-cretaceous “saurian sauna”, when there was no ice at sea level at poles.
- The loon like Hesperornis and the seabird Ichthyornis, found in the ancient chalk of a vanished Cretaceous sea.
- The discovery adds to growing evidence that the dinosaurs were wiped out when a comet or asteroid crashed into Earth at the end of the cretaceous.
- If you burn it all at once, some chance of getting above the cretaceous level, but lots of uncertainty, including how much reserves there really are.
- A: If you burn it all at once, there is some chance of getting above the cretaceous level, but lots of uncertainty, including how much reserves there really are.
- The record of this period consists of a series of strata, in which chalk beds make a conspicuous appearance, and which is therefore called the cretaceous system or formation.
- It takes in a great part of New Brunswick and certain spots or areas in Nova Scotia; and another great coal-bearing system which we call the cretaceous and the tertiary in the mountain valleys of British Columbia.
- He said in the exploration of oil the set of system geologists refer to as the cretaceous rock, which is an oil bearing rock is said to be found in the gulf of Guinea stretching from Ghana, Ivory Coast, Liberia and Sierra Leone.