Cretaceous

Definitions

  • Skeleton of Saurolophus, from Upper Cretacic of Alberta
    Skeleton of Saurolophus, from Upper Cretacic of Alberta
  • WordNet 3.6
    • adj Cretaceous of or relating to or denoting the third period of the Mesozoic era
    • adj cretaceous abounding in chalk
    • n Cretaceous from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants
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Additional illustrations & photos:

Badlands on the Red Deer River in Alberta. This region is the richest known collecting ground for cretacic dinosaurs Badlands on the Red Deer River in Alberta. This region is the richest known collecting ground for cretacic dinosaurs

Webster's Revised Unabridged Dictionary
    • Cretaceous Having the qualities of chalk; abounding with chalk; chalky; as, cretaceous rocks and formations. See Chalk.
    • Cretaceous (Geol) Of, pertaining to, or designating, the period of time following the Jurassic and preceding the Tertiary, generally given as from 144 million years b. p. to 65 million years b. p.. Also called Cre*tac"ic.
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Chambers's Twentieth Century Dictionary
    • adj Cretaceous krē-tā′shus composed of or like chalk
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Etymology

Webster's Revised Unabridged Dictionary
L. cretaceus, fr. creta, chalk. See Crayon
Chambers's Twentieth Century Dictionary
L. cretaceus, from creta, chalk.

Usage

In literature:

The Upper Chalk has a maximum thickness in England of about 1000 ft., but post-cretaceous erosion has removed much of it in many districts.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7" by Various
Volcanic rocks of Tertiary and late Cretaceous age are extensively developed, especially in the Muller Mountains.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3" by Various
It is believed, however, that the depth of the cretaceous sea over the island was probably never very great.
"The History of Cuba, vol. 1" by Willis Fletcher Johnson
We have now come to the end of the Lower Cretaceous, in which are included the Wealden and the Lower Greensand.
"The Geological Story of the Isle of Wight" by J. Cecil Hughes
Secondary (cretaceous) and tertiary rocks are largely developed in the interior.
"The New Gresham Encyclopedia. Vol. 1 Part 3" by Various
West of Sinope Cretaceous beds form a long strip parallel to the shore line.
"Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7" by Various
F. Kossmat has shown that the Atlantic had substantially its present form during the Cretaceous period.
"Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 8" by Various
DICOTYLEDONOUS LEAVES IN LOWER CRETACEOUS STRATA.
"A Manual of Elementary Geology" by Charles Lyell
Fossil remains are few in the Upper Eocene and Miocene of Europe and the Upper Cretaceous of North America.
"Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 4" by Various
From the Cretaceous rocks of North America a large number of birds have been described by O.C.
"Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7" by Various
Families: Fibulariidae, Laganidae, Scutellidae, Clypeastridae; Cretaceous to Recent.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10" by Various
Eocene strata succeed Cretaceous rocks without serious unconformity in the Libyan area, parts of Denmark, S.E.
"Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 6" by Various
In the Cretaceous rocks the scapula presents, in most cases, a different appearance.
"Dragons of the Air" by H. G. Seeley
The tertiary period began with the close of the cretaceous.
"A Manual of the Antiquity of Man" by J. P. MacLean
It is not until Paris has been left behind that the river begins to wash the bold white ramparts of the cretaceous beds.
"France" by Gordon Cochrane Home
Denmark belongs to the Cretaceous period, as does also a large part of Russia between the Volga and the basin of the Dnieper.
"The New Gresham Encyclopedia" by Various
Following the Cretaceous period came the Tertiary period, during which the continent assumed very nearly its present outline.
"North America" by Israel C. Russell
The prevailing rock is soft cretaceous limestone, which crops out at many points.
"Biblical Geography and History" by Charles Foster Kent
The Cretaceous deposits yield gypsum, chalk and sulphur.
"Encyclopaedia Britannica, 11th Edition, Volume 15, Slice 7" by Various
Cretaceous deposits occur in the S.W., and Devonian limestones and shales crop out in the S.E.
"Encyclopaedia Britannica, 11th Edition, Volume 15, Slice 6" by Various
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In news:

With its antediluvian palmettos, teeming sloughs and oxbow lakes, and mighty live oaks, a trip to Brazos Bend can feel like time-travel to the Cretaceous Period.
The largest creature ever to fly was Quetzalcoatlus northropi, a Cessna-size pterosaur that soared through Cretaceous skies 68 million years ago on wings spanning 30 feet.
Ophir Energy PLC and BG PLC said the Papa-1 deepwater wildcat on Block 3 offshore Tanzania has made the first Cretaceous gas discovery outboard of the Rufiji Delta.
A period of violent tectonic thrusting during the Cretaceous reorganized the rocks into their current arrangement.
Purported Cretaceous period protester supporting civil rights of Lenny the Tyrannosaurus Bataar during federal court proceedings.
Taunting and name-calling go all the way back to the Cretaceous period, according to Donaldson's ( The Gruffalo ) tale of dinosaur species that don't see eye to eye.
A relentless dinosaur hunter unearths an entire ecosystem from the middle cretaceous period, not to mention some exotic new cousins of T. By Heather Pringle, Photography by Grant Delin.
The feathers on Y. Rex, which lived during the latter, warmer part of the Cretaceous, might have had its own coat of many feathers .
A model of the head of Uberabatitan Ribeiroi, a Late Cretaceous period dinosaur, is seen at the Federal University, in Rio de Janeiro.
Map of Late Cretaceous coastline.
A chart of jaws and other bones from cretaceous-era lizards .
If they are right, primates originated right around the boundary between the Cretaceous and the Paleocene – primates probably emerged into a world recently vacated by the non-avian dinosaurs.
Nick Longrich, a postdoctoral associate in the Geology and Geophysics Department, announced the discovery of Texacephale Langstoni in an article in the April issue of the journal Cretaceous Research .
Ten years after its discovery, a vanishingly rare tree from the Cretaceous Period is a scientific darling and may soon become a commercial success too.
The geological time scale , with its familiar Cretaceous, Cambrian, and Eocene periods, works great as a calendar for the history of the Earth.
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In science:

The main factors often cited as the reason that the latter part of the Cretaceous was one of the warmest periods in Earth’s history (e.g., ), are that the land mass did not occupy the poles and that the global sea level was highest than ever (thus moderating the temperatures).
The Spiral Structure of the Milky Way, Cosmic Rays, and Ice Age Epochs on Earth
Chicxulub impact structure in Yucatan Peninsula, in Mexico, has a diameter of about 200Km, was produced 65 million years ago at the end of Cretaceous Period and is thought to be linked to the dinosaur extinction.
Astrophysics datamining in the classroom: Exploring real data with new software tools and robotic telescopes
Sauropod dinosaur embryos from the Late Cretaceous of Patagonia.
Aspects of the history, anatomy, taxonomy and palaeobiology of sauropod dinosaurs
Sauropoda) from the Late Cretaceous of Patagonia.
Aspects of the history, anatomy, taxonomy and palaeobiology of sauropod dinosaurs
Fm. (Cretaceous) of Dinosaur National Monument, UT.
Aspects of the history, anatomy, taxonomy and palaeobiology of sauropod dinosaurs
Early Cretaceous titanosaurid sauropod dinosaur from Malawi.
Aspects of the history, anatomy, taxonomy and palaeobiology of sauropod dinosaurs
Saurischia: Sauropodomorpha) in the North American mid-Cretaceous.
Aspects of the history, anatomy, taxonomy and palaeobiology of sauropod dinosaurs
Early Cretaceous of Central Texas and its phylogenetic relationships.
Aspects of the history, anatomy, taxonomy and palaeobiology of sauropod dinosaurs
Cretaceous of Linhai, Zhejiang, China [in Chinese].
Aspects of the history, anatomy, taxonomy and palaeobiology of sauropod dinosaurs
Sauropod dinosaurs from the Early Cretaceous of Malawi, Africa.
Aspects of the history, anatomy, taxonomy and palaeobiology of sauropod dinosaurs
Early Cretaceous titanosaurid sauropod dinosaur from Malawi.
Aspects of the history, anatomy, taxonomy and palaeobiology of sauropod dinosaurs
Sauropoda) from the Late Cretaceous of Patagonia.
Aspects of the history, anatomy, taxonomy and palaeobiology of sauropod dinosaurs
Theropoda: Abelisauridae) from the Late Cretaceous of Madagascar.
Aspects of the history, anatomy, taxonomy and palaeobiology of sauropod dinosaurs
Ostrom, J. H. 1969a. A new theropod dinosaur from the Lower Cretaceous of Montana.
Aspects of the history, anatomy, taxonomy and palaeobiology of sauropod dinosaurs
Elasmosauridae) from the Upper Cretaceous (Lower Campanian) of Kansas, U.S.A.
Aspects of the history, anatomy, taxonomy and palaeobiology of sauropod dinosaurs
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