Cretaceous vs Ornithopod - What's the difference?

cretaceous | ornithopod |


As an adjective cretaceous

is of or relating to chalk.

As a noun ornithopod is

a type of bipedal, herbivorous, bird-hipped dinosaur from the cretaceous period, found on all seven continents.

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
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  • 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

    *

    ornithopod

    Noun

    (en noun)
  • A type of bipedal, herbivorous, bird-hipped dinosaur from the Cretaceous period, found on all seven continents.