"Early tetrapods" refers to the first group of animals that evolved from fish and became four-legged creatures, such as amphibians. They mark an important step in the transition from water to land.
Sentences with «early tetrapods»
A 2012 reconstruction of early tetrapod Ichthyostega suggests that it couldn't bend side - to - side like lizards do as they walk. (discovermagazine.com)
However, the most of basal bones located in the anterior side (i.e. the thumb side in the human limb) were lost in early tetrapods, and only the most posterior bone remained as the «humerus (i.e. the upper arm of humans).» (sciencedaily.com)
Moving around on land required significantly more huffing and puffing — and oxygen — than swimming for early tetrapods. (discovermagazine.com)