Jaw suspension of mammalsA. AmphistylicB. CraniostylicC. AutostylicD. Hyostylic

The correct answer is C. Autostylic.

Jaw suspension refers to the way the jaws are attached to the skull in mammals. The different types of jaw suspension are:

A. Amphistylic: This type of jaw suspension involves a connection between the hyomandibula (a bone in the fish jaw) and the skull. It is commonly found in early fish.

B. Craniostylic: This type of jaw suspension involves a connection between the upper jaw and the skull through the cranium. It is seen in some extinct amphibians.

C. Autostylic: In autostylic jaw suspension, the upper jaw is directly attached to the braincase (skull) without any intermediary bones. This is the most common type of jaw suspension in mammals.

D. Hyostylic: This type of jaw suspension involves the hyomandibula attaching the jaw to the skull. It is common in cartilaginous fish, such as sharks.

So, among the given options, the correct answer is C. Autostylic, which describes the type of jaw suspension found in most mammals.