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Cretaceous Period: Media
geochronology
Videos
What did ancient animals REALLY eat?
Findings about a small bird have scientists rethinking dino diets.
How to identify new species with just one bone
Hell Creek was home to T. rex, Triceratops, and now…these...
Images
Cretaceous paleogeography
Distribution of landmasses, mountainous regions, shallow seas, and deep ocean basins...
Adapted from C.R. Scotese, The University of Texas at Arlington
geologic time
The stratigraphic chart of geologic time.
Encyclopædia Britannica, Inc. Source: International Commission on Stratigraphy (ICS)
belemnoid cephalopods
Reconstruction of squidlike belemnoid cephalopods from the Cretaceous Period.
Courtesy of the American Museum of Natural History, New York
skeleton of Tyrannosaurus rex
Skeleton of Tyrannosaurus rex constructed from specimens discovered in 1902...
Neg. No. 338590 Photo. Blackwell, Finnin, Chesek; Courtesy Department Library Services, American Museum of Natural History, New York City
Triceratops
Triceratops skeleton.
Courtesy, Library Services Department, American Museum of Natural History, New York City; photograph, E.M. Fulda (Neg. No. 310434)
Pteranodon
The skeleton and restoration of wings of a Pteranodon dinosaur.
Courtesy of the American Museum of Natural History, New York
Chicxulub crater
The Chicxulub crater at the northwestern point of the Yucatán Peninsula was formed...
NASA/JPL
computer-generated image of the Chicxulub crater
Chicxulub crater, on the northern coast of the Yucatán Peninsula in Mexico, in a...
V.L. Sharpton, University of Alaska, Fairbanks; NASA
Cretaceous Period in geologic time
The Cretaceous Period and its subdivisions.
Encyclopædia Britannica, Inc. Source: International Commission on Stratigraphy (ICS)
seafloor spreading
Map showing the age of selected regions of the ocean floor. Chronological measurements...
Encyclopædia Britannica, Inc.
marine family diversity
The diversity of marine animal families since late Precambrian time. The data for...
Encyclopædia Britannica, Inc.
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