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Cretaceous vs Giganotosaurus - What's the difference?

cretaceous | giganotosaurus |

As an adjective cretaceous

is of or relating to chalk.

As a noun giganotosaurus is

any of several very large, carnivorous dinosaurs of the subfamily giganotosaurinae , from the cretaceous period.

cretaceous

English

(wikipedia Cretaceous)

Proper noun

(en proper noun)
  • (geology) The geologic period within the Mesozoic era that comprises lower and upper epochs from about 146 to 65 million years ago
  • *
    • As with the Lejeuneaceae, this pattern of massive speciation appears to be correlated with the Cretaceous explosion of the angiosperms and the simultaneous creation of a host of new microenvironments, differing in humidity, light intensity, texture, etc.

    See also

    *

    giganotosaurus

    English

    Noun

    (en-noun)
  • Any of several very large, carnivorous dinosaurs of the subfamily Giganotosaurinae , from the Cretaceous period

    • Synonyms

    *gigantosaur