Pelycosaurs and Therapsids were
Sauropsids
Synapsids
Sphenopsids
Dinosaurs
The most thoroughly studied of the known bacteria plant interactions is the
Ancestor of man, who first stood erect, was
A good example for recapitulation theory is
Which of the following is the most acceptable method determining the age of recent fossils
Trilobites were evolved during which of the following period