Synapsids were reptiles that had a hole in each temporal region, eventually giving rise to modern mammals.
The prehistoric reptile ancestor of mammals is called Synapsids. They were a group of reptiles that lived during the Permian and Triassic periods, and eventually evolved into mammals in the Mesozoic era. The most well-known synapsids include Dimetrodon and Thrinaxodon.
A lizard is a reptile for several reasons. It is cold-blooded, unlike mammals which are warm-blooded. Also, it lays eggs, whereas mammals do not, and it also does not have hair, which mammals do.
Mammals and birds are both descended from a group of vertebrates known as archosaurs. This group included early reptiles and gave rise to both dinosaurs (which birds evolved from) and the ancestors of mammals.
Fish are their own group.
No. Mammals evolved from a group of reptiles called cynodonts. "Raptor" is an informal term for a group of dinosaurs call dromaeosaurids, which were closely related to the ancestors of birds.
Vertebrates are animals that have a backbone, which is composed of individual vertebrae. This group includes mammals, birds, reptiles, amphibians, and fish. The backbone serves as a structural support for the body and also houses and protects the spinal cord.
1.picies(fish) 2.amphibian 3.reptile 4.aves(birds) 5.mammals
Mammals which lay eggs are called monotremes. They include the platypus, short-beaked echidna and long-beaked echidna. However, there is no evidence that reptiles were ancestors of the monotremes. Such a belief remains a theory, not fact.
An alligator is not a mammal; it is a reptile. Mammals are characterized by features such as giving birth to live young, having fur or hair, and producing milk to feed their offspring. Alligators belong to the reptile group, which includes animals like snakes, turtles, and crocodiles.
Turtle is a reptile.
A therapsid is an extinct group of vertebrates that lived during the Permian and Triassic periods. They are often considered to be the ancestors of mammals due to their mammal-like characteristics such as specialized teeth and jaw structure. Therapsids played a significant role in the evolution of terrestrial vertebrates.
reptile