Definitions:

1. A group of mammals known for their distinctive joint structures. NOUN
   • The Xenarthra order is known for its unique skeletal features.
2. An order of placental mammals that include anteaters, tree sloths, and armadillos, primarily found in the Americas, particularly in Central and South America. NOUN
   • The distribution of Xenarthra spans from the southern United States to Argentina.

Synonyms:

• edentata
• pilosans and cingulates
• placental mammals