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Rheiformes

Rheiformes

9.9
Large flightless birds from South America that have three toes like the rhea
  • noun
  • /ˈreɪɪfɔːrmiːz/
  • Specialized
: Rheiformes
  • Unlike ostriches, members of the Rheiformes have three toes on each foot.

Examples

  • The Rheiformes comprise the extant rheas and several extinct species once native to South America.

  • Did you know that Rheiformes include rheas?

  • Many paleontologists study fossil records to learn about the evolution of Rheiformes.

  • The Rheiformes are fascinating creatures native to South America.

  • The Rheiformes are known for their large size and inability to fly, setting them apart from other birds.

  • Many researchers focus on the conservation of Rheiformes to protect these unique South American birds.

  • In zoology, Rheiformes refers to the group that includes both the living rheas and some extinct relatives.

Synonyms

family Rheidae
vsRheiformes
  • Specialized
9.9

Large birds from South America that cannot fly and look like ostriches

is the order label for the same group rather than a different rank
Rheidae
vsRheiformes
  • Specialized
9.9

A family of large flightless birds from South America like an ostrich

is the higher taxonomic rank grouping those birds rather than naming a family

Surface Forms

Rheiformes singular
Rheiformes plural

Morphology

Rheiformes = rhea (semi-transparent) = rhea + iformes

The name is built from 'rhea' plus the taxonomic order suffix '-iformes', but the specialized zoological naming convention is only partly transparent to general learners.

Etymology

The word Rheiformes comes from the bird name rhea and the ending -formes, which means 'shape' or 'form'. Like in uniform, -formes means 'in the shape of'. So Rheiformes are birds 'in the shape of' a rhea, meaning large, flightless birds like ostriches and emus.