Pronunciation: /ðiː iːoʊsiːn/
noun a geological epoch that lasted from about 56 to 34 million years ago, characterized by the appearance of modern flora and fauna
A1 The Eocene was a period in Earth's history millions of years ago.
A2 Fossils from the Eocene era provide valuable information about ancient ecosystems.
B1 Scientists study the Eocene to understand climate change over long periods of time.
B2 During the Eocene, the Earth experienced a significant warming trend.
C1 The Eocene epoch is known for the diversification of mammals and birds.
C2 Geological evidence from the Eocene helps researchers reconstruct ancient environments with great accuracy.
article a word that specifies a noun as definite or indefinite
A1 The Eocene was a period in Earth's history millions of years ago.
A2 During the Eocene, mammals began to diversify and spread across the globe.
B1 The Eocene epoch is known for its warm climate and high sea levels.
B2 Fossils from the Eocene provide valuable information about ancient ecosystems.
C1 The Eocene marked a significant transition in the evolution of marine life.
C2 Researchers continue to study the Eocene period to better understand past climate changes.
formal The Eocene epoch is a geological period that lasted from about 56 to 33.9 million years ago.
informal Hey, did you know that the Eocene era was a really long time ago?
slang Back in the Eocene, things were totally different, man.
figurative Exploring the Eocene period is like taking a trip back in time to a whole different world.
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