struthioniformes
Noun: 1. An order of large, flightless birds (ratites): Struthioniformes is the scientific taxonomic order that includes ostriches and their extinct relatives. Birds in this order are characterized by their inability to fly, a flat breastbone without a keel, and strong legs adapted for running. 2. A paleontological classification: The order is known from fossil evidence dating from the Pleistocene epoch to the present day.
- Noun:
- The ostrich is the sole living representative of the order Struthioniformes.
- Struthioniformes are distinguished from other ratite orders, like Rheiformes (rheas) and Casuariiformes (cassowaries and emus).
- Fossil discoveries have expanded our understanding of the diversity within Struthioniformes.
- In scientific taxonomy: The term is used in biological classification to group species with common ancestry and characteristics. It sits above the family level (Struthionidae for ostriches).
- The phylogenetic study confirmed the placement of the extinct Elephantornis within the order Struthioniformes.
- Struthionidae (n): The family within the order Struthioniformes, containing ostriches (genus ).
- Struthio (n): The genus name for ostriches (e.g., , the common ostrich).
- Ratite (n/adj): A broader, informal grouping of flightless birds with a flat breastbone, which includes the orders Struthioniformes, Rheiformes, Casuariiformes, and others.
- Ostrich order (informal, descriptive)
This word has a single, highly specific meaning used almost exclusively in scientific contexts, particularly in: * Zoology and Ornithology: For the classification of birds. * Paleontology: When discussing the fossil record of large, flightless birds. It is not used in everyday conversation.
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a ratite bird order: ostriches and related extinct birds; known from the Pleistocene onward
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