Definitions for cretaceous period
cre·ta·ceous peri·od

Princeton's WordNetRate this definition:0.0 / 0 votes

1. Cretaceous, Cretaceous periodnoun

   from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants

WikipediaRate this definition:0.0 / 0 votes

1. cretaceous period

   The Cretaceous ( krih-TAY-shəs) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of the entire Phanerozoic. The name is derived from the Latin creta, "chalk", which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation Kreide. The Cretaceous was a period with a relatively warm climate, resulting in high eustatic sea levels that created numerous shallow inland seas. These oceans and seas were populated with now-extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was ice free, and forests extended to the poles. During this time, new groups of mammals and birds appeared. During the Early Cretaceous, flowering plants appeared and began to rapidly diversify, becoming the dominant group of plants across the Earth by the end of the Cretaceous, coincident with the decline and extinction of previously widespread gymnosperm groups. The Cretaceous (along with the Mesozoic) ended with the Cretaceous–Paleogene extinction event, a large mass extinction in which many groups, including non-avian dinosaurs, pterosaurs, and large marine reptiles, died out. The end of the Cretaceous is defined by the abrupt Cretaceous–Paleogene boundary (K–Pg boundary), a geologic signature associated with the mass extinction that lies between the Mesozoic and Cenozoic Eras.

ChatGPTRate this definition:0.0 / 0 votes

1. cretaceous period

   The Cretaceous Period is a division of geological time, spanning from around 145.5 million to 65.5 million years ago. It is the last period of the Mesozoic Era and is known for being the final age of the dinosaurs. The Cretaceous Period ended with a mass extinction event, believed to be caused by a meteor impact, which wiped out the dinosaurs and much of life on Earth. This period also saw significant geological changes, plant evolution, and marked the rise of mammals.

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How to pronounce cretaceous period?

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Numerology

1. Chaldean Numerology

   The numerical value of cretaceous period in Chaldean Numerology is: 3

2. Pythagorean Numerology

   The numerical value of cretaceous period in Pythagorean Numerology is: 6

Examples of cretaceous period in a Sentence

1. Sebastian Apesteguia:

   This print is bigger than any other we have found to date in the area, it is a record in size for carnivorous dinosaurs from the end of the Cretaceous period in South America.

2. Matija Cuk:

   But that fact allows us to use computer simulations to tease out the history of Saturn’s inner moons, doing so, we find that they were most likely born during the most recent 2 percent of the planet’s history. Related : Saturn's largest moon Titan is bursting with color Researchers had long thought Saturn’s rings were as old as the planet itself. But that thinking changed in 2012, when French astronomers found that tidal effects – the gravitational interaction of the inner moons with fluids deep in Saturn’s interior – are causing them to spiral to larger orbital radii comparatively quickly. The implication, given their present positions, is that these moons, and presumably the rings, are not so old. That still did n’t answer exactly when they were born. Cuk and his team turned to results from NASA’s Cassini mission, which has observed ice geysers on Saturn’s moon Enceladus. Assuming that the energy powering these geysers comes directly from tidal interactions and that Enceladus ’ level of geothermal activity is more or less constant, then the tides within Saturn are quite strong. According to the team’s analysis, these would move the satellite by the small amount indicated by the simulations in only about 100 million years. Related : Cassini probe takes' cosmic bulls-eye' of Saturn moons Enceladus, Tethys This would date the formation of the major moons of Saturn, with the exception of more distant Titan and Iapetus, to the relatively recent Cretaceous Period, the era of the dinosaurs.

3. George Poinar Jr.:

   Grasses probably go back to the Early Cretaceous Period and possibly even the Jurassic Period.

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=cretaceous period
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Cretaceous_Period
3. ^ ChatGPT
   https://chat.openai.com