prototheria

Thân thiện

The platypus, a member of the Prototheria, swims in a freshwater stream.

Definition

1. Noun:
   • A subclass of mammals: "Prototheria" refers to a primitive subclass of mammals that lay eggs instead of giving birth to live young. This group includes the monotremes, such as the platypus and echidnas.

Usage Examples

• Noun:
  • The platypus and echidna are the only surviving members of the Prototheria.
  • Prototheria represents an early branch in mammalian evolution.

Advanced Usage

• In taxonomic classification: The term is used in scientific contexts to discuss evolutionary biology and zoological classification.
  • The characteristics of Prototheria provide clues about the ancestors of all mammals.

Variants and Related Words

• Monotreme (n): The common name for an egg-laying mammal belonging to the Prototheria.
  • The duck-billed platypus is a well-known monotreme.

Synonyms

• Egg-laying mammals: A descriptive synonym for the group.
• Monotremes: The more commonly used term for the animals within this subclass.

Học thuật

Noun

1. echidnas; platypus

Từ đồng nghĩa

• Prototheria
• subclass Prototheria