Cretaceous, Cretaceous period(adj)
from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants
abounding in chalk
of or relating to or denoting the third period of the Mesozoic era
The geologic period within the Mesozoic era that comprises lower and upper epochs from about 146 to 65 million years ago
Of or relating to chalk.
Consisting of chalk.
having the qualities of chalk; abounding with chalk; chalky; as, cretaceous rocks and formations. See Chalk
Origin: [L. cretaceus, fr. creta chalk. See Crayon.]
The Cretaceous, derived from the Latin "creta", usually abbreviated K for its German translation Kreide, is a geologic period and system from circa 145 ± 4 to 66 million years ago. In the geologic timescale, the Cretaceous follows the Jurassic period and is followed by the Paleogene period of the Cenozoic era. It is the last period of the Mesozoic Era, and, spanning 79 million years, the longest period of the Phanerozoic Eon. The Cretaceous was a period with a relatively warm climate, resulting in high eustatic sea levels and creating 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. At the same time, new groups of mammals and birds, as well as flowering plants, appeared. The Cretaceous ended with a large mass extinction, the Cretaceous–Paleogene extinction event, in which many groups, including non-avian dinosaurs, pterosaurs and large marine reptiles, died out. The end of the Cretaceous is defined by the K–Pg boundary, a geologic signature associated with the mass extinction which lies between the Mesozoic and Cenozoic Eras.
Chambers 20th Century Dictionary
krē-tā′shus, adj. composed of or like chalk.—adj. Crē′tāted, rubbed with chalk.—n. Cretifac′tion.—v.i. Crē′tify, to become impregnated with salts of lime. [L. cretaceus, from creta, chalk.]
The numerical value of cretaceous in Chaldean Numerology is: 3
The numerical value of cretaceous in Pythagorean Numerology is: 2
Sample Sentences & Example Usage
Grasses probably go back to the Early Cretaceous Period and possibly even the Jurassic Period.
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.
It indicates that psychedelic compounds were present back in the Cretaceous, what effect it had on animals is difficult to tell, but my feeling is dinosaurs definitely fed on this grass.
Gualicho would likely not have been something you'd want to meet on a lonely, dark Cretaceous night, with Mapusaurus probably preying on large sauropods (the group that included Argentinosaurus), Gualicho likely focused on smaller prey: a category a human lost in the Cretaceous would fit into.
The concentration of mammal tracks on this site is orders of magnitude higher than any other site in the world, i don't think I've ever seen a slab this size, which is a couple of square meters, where you have over 70 footprints of so many different types. This is the mother lode of Cretaceous mammal tracks.
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