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Vocabulary Entry
ordovician
|noun • adjective
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N
noun
A period in the Paleozoic Era that lasted from about 485 to 443 million years ago, characterized by the first appearance of many marine life forms.
Example Sentences
"The Ordovician period is known for its diverse marine life."
"Scientists study fossils from the Ordovician to understand ancient ecosystems."
"Many new species emerged during the Ordovician period."
A
adjective
Relating to the geological period that occurred between the Cambrian and the Silurian periods.
Example Sentences
"The Ordovician rocks in this area contain a wealth of fossils."
"Researchers have uncovered many Ordovician species in the region."
"Ordovician strata are important for understanding the evolution of life."