Tetradactyl: meaning, definitions and examples
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tetradactyl
[tɛtrəˈdæktɪl ]
Definition
Context #1 | Adjective
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.
Interesting Facts
Etymology
- The word comes from the Greek 'tetra' meaning 'four' and 'dactylos' meaning 'finger' or 'toe'.
- It reflects the structure of many animals, adding to our understanding of evolutionary biology.
Biology
- Many prehistoric creatures, particularly some dinosaurs, were classified as tetradactyl due to their foot structure.
- Birds are modern examples of tetradactyl organisms, typically exhibiting four primary toes.
Paleontology
- Paleontologists have discovered fossil evidence of various tetradactyl species, enriching our knowledge of how different environments shaped limb evolution.
- Tetradactyl limbs indicate adaptation to specific habitats, providing insights into how creatures moved and hunted.
Zoology
- The anatomical arrangement of digits can influence an animal's speed and agility, which is crucial in hunting and escaping predators.
- Some reptiles, along with several bird species, exhibit tetradactyl traits which aid in their ecological niche.
Comparative Anatomy
- Studying tetradactyl structures in various species helps scientists understand evolutionary relationships among different animal groups.
- The design of tetradactyl limbs can provide functional advantages in specific environments, like grasping or swimming.