Question

Seymouria is a connecting link between
A) Aves and mammals
B) Amphibians and Reptiles
C) Pisces and Amphibians
D) Reptiles and Aves

Answer 1

Hint: They have a connecting link between tetrapod vertebrates which has an aquatic life stage and a terrestrial life stage. Its head looks like species of one class which include frogs and the body shape looks like a class that includes lizards.

Complete Answer:
Seymouria is an extinct genus of the Early Permian Seymouriamorph of North America and Europe. Two species, Seymouria baylorensis and Seymouria sanjuanensis, are mostly recognised. They have a connecting link of two different classes that means they are living creatures that have the personality of two different groups.

Now, let us find the solution from the options-
A) Seymouria was well-adapted with many reptilian traits to life on land, so many, in reality, that Seymouria was first considered to be just a primitive reptile.
B) Seymouria had a larval stage that resided in the water, making Seymouria not a true reptile, but just an amphibian closely associated with reptiles.
C) Seymouria is an endangered genus related to amphibians and reptiles.
D) Seymouria's skull looks like an amphibian skull, but the rest of the anatomy of the body and the formation of the skeleton is more like a normal reptile.

Thus, the correct answer is option (B) Amphibians and Reptiles.

Note: The Seymouria was small, just 60 cm (2 ft) in length. The Permian dry climate suited reptiles better than amphibians and other more primitive tetrapods, but in this harsh environment, Seymouria had several reptilian characteristics which helped it to survive in such an environment. It had long, sturdy legs, and therefore had dry skin and water saving potential. Like modern reptiles, it has the ability to excrete extra salt from its blood via a gland that is present in its nose.