Edentata
Học thuậtThân thiện
Definition
- Noun:
- A taxonomic order of mammals: "Edentata" refers to an order of placental mammals characterized by having few teeth or no teeth at all. This order traditionally included groups such as anteaters, sloths, and armadillos, primarily found in the New World (the Americas).
Usage Examples
- Noun:
- The biological order Edentata includes fascinating species like the giant anteater.
- Modern taxonomy has re-evaluated the classification of the Edentata.
Advanced Usage
- In historical/scientific context: The term "Edentata" is often used in historical zoological texts. In contemporary taxonomy, the members of this group are frequently separated into different orders (e.g., Pilosa for anteaters and sloths, and Cingulata for armadillos), making "Edentata" a term more common in historical or general overview contexts.
- The classical order Edentata is now considered paraphyletic by many scientists.
Variants and Related Words
- Edentate (noun/adjective): A member of the order Edentata; or, describing an animal that lacks teeth or has degenerate teeth.
- The armadillo is an edentate mammal.
Synonyms
- Toothless mammals (descriptive synonym)
- Xenarthra (a more modern taxonomic clade that often includes the former members of Edentata, characterized by unique joint structures in their vertebrae)
Notes on Meaning
- The primary meaning is taxonomic. It is a scientific term, not used in everyday conversation.
- The defining characteristic is the absence or severe reduction of teeth.
Noun
- order of mammals having few or no teeth including: New World anteaters; sloths; armadillos