Dicondylic skull with 10 pairs of cranial nerves occur in

• A. Pisces
• B. Amphibia
• C. Reptilia
• D. Mammalia

The dicondylic skull, characterized by two occipital condyles, is a feature found in certain vertebrates. Among the options provided, the correct answer is:

Mammalia

Mammals possess a dicondylic skull along with 10 pairs of cranial nerves. This anatomical structure allows for a greater range of head movement and more complex neural functions compared to other groups.

Key Features of Mammals

• Dicondylic Skull: Two points of articulation with the vertebral column.
• Cranial Nerves: 10 pairs that facilitate various sensory and motor functions.
• Advanced Brain Structure: Supports higher cognitive functions.

In contrast, fish (Pisces) and amphibians (Amphibia) typically have a different skull structure, while reptiles (Reptilia) may have variations in cranial nerve pairs. Thus, Mammalia is the correct choice for this question.