prototheria
Definition
- 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.
Noun
-
echidnas; platypus
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