Tetrapod
... "four-footed") are ... The universal
tetrapod characteristics of front limbs that bend backward at the ... In coastal engineering, a
tetrapod is a four-legged concrete structure used as armour unit on breakwaters. The
tetrapod 's shape is designed to dissipate the force ...
Vertebrates
... no vertebrae, but are genetically quite closely related to ... ... article is about four-limbed vertebrates . For the structure, see
tetrapod ... Scientists find 245 million-year-old burrows of land vertebrates in Antarctica ... Animated Science, Health, Technology, Math, Social ...