Synapsids -LRB- ` fused arch ' -RRB- , also known as theropsids -LRB- ` beast face ' -RRB- , are a class of animals that includes mammals and everything closer to mammals than to other living amniotes .

Synapsids -LRB- ` fused arch ' -RRB- , also known as Theropsids -LRB- ` beast face ' -RRB- , is a taxonomical class of animals .
