catarrhinian
Definition
Adjective: * Pertaining to catarrhine primates: Relating to or characteristic of the parvorder Catarrhini, a group of Old World monkeys, apes, and humans. The defining anatomical feature is nostrils that are close together and open downward, as opposed to sideways. * Having downward-facing nostrils: Describing an animal, specifically a primate, whose nostrils are positioned close together and point downward.
Usage
This is a highly specialized, scientific term used primarily in zoology, physical anthropology, and primatology. It is not used in everyday conversation.
- The catarrhinian lineage includes species such as baboons, macaques, and gorillas.
- Anatomists study the catarrhinian skull structure to understand primate evolution.
- Humans are classified as catarrhinian primates.
Advanced Usage
- The term is often used in contrast with platyrrhine (New World monkeys, which have nostrils that are wide apart and open sideways).
- It can be used in phylogenetic contexts to discuss the evolutionary split between the catarrhinian (Old World) and platyrrhine (New World) primate lineages.
Variants and Related Words
- Catarrhine (noun/adjective): The more common variant spelling and form. A member of the Catarrhini parvorder.
- The chimpanzee is a catarrhine.
- Catarrhini (noun, plural): The scientific name for the parvorder itself.
- The parvorder Catarrhini diverged from platyrrhines millions of years ago.
Synonyms
- Old World monkey/ape (in a broad, non-scientific sense, though this is not perfectly accurate as "catarrhinian" includes apes and humans, not just monkeys).
- Downward-nosed primate (descriptive synonym).
Antonyms
- Platyrrhinian / Platyrrhine (adjective): Pertaining to New World monkeys with nostrils wide apart and opening sideways.
Adjective
-
of or related to Old World monkeys that have nostrils together and opening downward
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