Eocene

/'i:ousi:n/

Thân thiện

Definition

1. Proper noun:
   • The Eocene epoch: A major division of geological time within the Paleogene Period, following the Paleocene and preceding the Oligocene. It is characterized by a warm global climate and the emergence and diversification of many modern mammalian orders.

Usage

• The word "Eocene" is used as a proper noun to refer to a specific geological epoch. It is typically capitalized and often used with the definite article "the" (e.g., ). It functions as a noun phrase in sentences, commonly appearing as the subject or object.

Examples

• Proper noun:
  • Fossils from the Eocene provide crucial evidence for mammalian evolution.
  • The global climate during the Eocene was significantly warmer than today.
  • Scientists study Eocene rock layers to understand ancient ecosystems.

Advanced Usage

• "Eocene-Oligocene boundary": Refers to the transition between the Eocene and Oligocene epochs, marked by a significant cooling event.
  • The extinction event at the Eocene-Oligocene boundary reshaped marine life.
• "Middle Eocene": A subdivision of the Eocene epoch.
  • This fossil is dated to the Middle Eocene.

Variants and Related Words

• Eocene Epoch: A more formal, full name for the epoch.
  • The Eocene Epoch lasted approximately 18 million years.
• Paleogene: The geological period that contains the Eocene epoch.
• Paleocene: The geological epoch immediately before the Eocene.
• Oligocene: The geological epoch immediately after the Eocene.

Synonyms

• Eocene epoch: The full, formal term.
• Eocene Age: A less common but acceptable synonym.

Related Phrases

• Eocene fauna: The animal life characteristic of the Eocene epoch.
  • The Eocene fauna included early horses and whales.
• Eocene climate: Refers specifically to the climatic conditions of that time.
  • Models of the Eocene climate help predict future warming scenarios.

Học thuật

Noun

1. from 58 million to 40 million years ago; presence of modern mammals

Từ đồng nghĩa

• Eocene
• Eocene epoch