1. any four-legged animals, including mammals, birds, reptiles and amphibians. 2. descriptive name given to the first four-limbed creatures to emerge on to the land during the Devonian, for example Acanthostega Found on https://www.encyclo.co.uk/local/20800
1) Four-footers 
1. any four-legged animals, including mammals, birds, reptiles and amphibians. 2. descriptive name given to the first four-limbed creatures to emerge on to the land during the Devonian, for example Acanthostega