Definition

Proper noun: * Family Hydrochoeridae: A taxonomic family within the order Rodentia. This family consists of large, semiaquatic rodents native to South America. Its members are characterized by their barrel-shaped bodies, vestigial tails, and partially webbed feet. The most well-known and only extant (living) member of this family is the capybara (Hydrochoerus hydrochaeris), which is the largest living rodent in the world.

Usage Notes

• The term "Family Hydrochoeridae" is used exclusively in scientific and zoological contexts for biological classification. It is not used in everyday conversation.
• In formal writing, the family name is always capitalized () and is often italicized.
• When referring to the common animal, the word capybara is used, not "hydrochoerid."

Examples

• Scientific Context:
  • The capybara belongs to the family Hydrochoeridae, which falls under the suborder Hystricomorpha.
  • Fossil records show that Family Hydrochoeridae once had more diverse members than it does today.
  • In the taxonomic hierarchy, Hydrochoeridae is a family within the infraorder Caviomorpha.

Advanced Usage

• Phylogenetic Studies: The term is used in evolutionary biology to discuss the lineage and relationships of these rodents.
  • The study focused on the phylogenetic position of Family Hydrochoeridae within the Cavioidea superfamily.

Variants and Related Words

• Hydrochoerid (noun/adjective): A member of the family Hydrochoeridae; relating to this family.
  • The fossil was identified as a hydrochoerid based on its dental structure.
• Capybara () (noun): The common name for the sole extant species within Family Hydrochoeridae.
• Lesser Capybara () (noun): A smaller, closely related species sometimes considered part of the same genus.

Synonyms

• Capybara family: An informal, descriptive synonym used in some non-technical zoological texts.

Related Terms (Taxonomic Hierarchy)

• Order: Rodentia (rodents)
• Suborder: Hystricomorpha
• Infraorder: Caviomorpha
• Superfamily: Cavioidea
• Genus: (the genus containing capybaras, placed within the family Hydrochoeridae)

Noun

1. capybara