eutheria

/ju:'θi:əriə/

Thân thiện

A dog, a cat, and a whale are all members of Eutheria.

Definition

1. Noun:
   • A subclass of mammals: "Eutheria" refers to the taxonomic subclass comprising all placental mammals, meaning mammals whose embryos develop inside the mother's uterus, nourished by a placenta. This group excludes monotremes (egg-laying mammals) and marsupials (pouched mammals).

Usage Examples

• Noun:
  • Humans, dogs, and whales all belong to the subclass Eutheria.
  • The evolutionary success of Eutheria is largely attributed to the advantages of placental development.

Advanced Usage

• In taxonomic hierarchy: The term is used in scientific classification to denote a major branch of mammals.
  • The class Mammalia is divided into three subclasses: Prototheria, Metatheria, and Eutheria.

Variants and Related Words

• Eutherian (adj): Pertaining to or characteristic of placental mammals.
  • The eutherian reproductive system is highly developed.
• Eutherian (n): An individual animal belonging to the Eutheria.
  • Most familiar mammals are eutherians.

Synonyms

• Placental mammals: The common descriptive term for members of the Eutheria.
• Placentals: An informal synonym for placental mammals.

Related Phrases / Terms

• Therian mammals: A broader group that includes both eutherians (placentals) and metatherians (marsupials), excluding monotremes.

Học thuật

Noun

1. all mammals except monotremes and marsupials

Từ đồng nghĩa

• Eutheria
• subclass Eutheria