Tetradactyl: meaning, definitions and examples
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tetradactyl
[ tɛtrəˈdæktɪl ]
biological classification
Tetradactyl refers to an organism that has four toes or digits on each limb. This term is commonly used in zoology to describe certain species with this distinctive feature. The term implies a specific evolutionary adaptation linked to movement and habitat.
Synonyms
four-toed, quadrupedal
Examples of usage
- The tetradactyl limb structure is common in some reptiles.
- Birds like the ostrich exhibit a form of tetradactylism in their foot design.
- The fossil record shows tetradactyl features in ancient amphibians.
- Tetradactyls often have unique adaptations for their environment.
Etymology
The term 'tetradactyl' comes from the Greek roots 'tetra-', meaning four, and 'daktylos', meaning finger or toe. This classification has been historically significant in the study of vertebrate anatomy and paleontology, as it helps scientists identify and categorize various species based on their limb morphology. Tetradactyl animals have evolved distinct adaptations for their ecological niches, and the study of their anatomical structures provides insight into evolutionary biology. The term has been used in scientific literature since the 19th century, particularly in discussions of tetrapod evolution, highlighting the diversity and adaptability of life forms over time.