1
Question
_______ were the immediate ancestors of mammals.
_______ were the immediate ancestors of mammals.
Open in App
Solution
The correct option is B Therapsids
The entire life span of the Earth is called geological time. The geological time scale is divided into major divisions called eras. Eras are further divided into periods.
The various eras are Paleozoic, Mesozoic and Cenozoic.
Sauropsids are lizard-like creatures that lived during the Mesozoic era. They had paddle shaped limbs adapted for swimming. They are closely related to mammals.
Pelycosaurs are also called primitive mammal-like reptiles, which used to lay thick shelled eggs like reptiles. At the end of the Permian period of the Paleozoic era, they were replaced by the therapsids.
Therapsids are considered as the immediate ancestors of the mammals. They were warm blooded. They had highly vascularized bones and erect limbs.
The fossil bird Archaeopteryx is a missing link between reptiles and birds. It has both reptilian and avian characters. It was about the size of a crow and possessed feathers and wings like birds. It had a long tail and toothed head like reptiles.
The entire life span of the Earth is called geological time. The geological time scale is divided into major divisions called eras. Eras are further divided into periods.
The various eras are Paleozoic, Mesozoic and Cenozoic.
Sauropsids are lizard-like creatures that lived during the Mesozoic era. They had paddle shaped limbs adapted for swimming. They are closely related to mammals.
Pelycosaurs are also called primitive mammal-like reptiles, which used to lay thick shelled eggs like reptiles. At the end of the Permian period of the Paleozoic era, they were replaced by the therapsids.
Therapsids are considered as the immediate ancestors of the mammals. They were warm blooded. They had highly vascularized bones and erect limbs.
The fossil bird Archaeopteryx is a missing link between reptiles and birds. It has both reptilian and avian characters. It was about the size of a crow and possessed feathers and wings like birds. It had a long tail and toothed head like reptiles.
Suggest Corrections
0
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program
