The CORRECT Sequence of ancestors of mammals starting from the oldest is :
Answers
Synapsids → Sauropsids → Therapsids → Mammals
Answer:
Sauropsids → Synapsids → Thecodonts → Mammals.
Explanation:
Sauropsida is a clade of amniotes, broadly equivalent to the class Reptilia. Sauropsida is the sister taxon to Synapsida, the clade of amniotes which includes mammals as its only modern representatives.
Synapsids are a group of animals that includes mammals and every animal more closely related to mammals than to the other members of the amniote clade, such as reptiles and birds. ... Primitive synapsids are usually called pelycosaurs or pelycosaur-grade synapsids.
Thecodontia (meaning 'socket-teeth'), now considered an obsolete taxonomic grouping, was formerly used to describe a diverse "order" of early archosaurian reptiles that first appeared in the latest Permian period and flourished until the end of the Triassic period
.Mammals (from Latin mamma, 'breast') are a group of vertebrate animals constituting the class Mammalia (/məˈmeɪliə/), and characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or hair, and three middle ear bones