Jaw suspension of mammals is A. AmphistylicB. AutodiastylicC. HyostylicD. Craniostylic

Jaw suspension in mammals can be categorized into several types, and the options you've provided correspond to these categories:

A. Amphistylic: This type of jaw suspension is seen in some primitive fish and involves a connection of the jaw to the skull through both the hyomandibula (a bone in the gill arch) and a quadrate bone. However, this is not the typical jaw suspension type in mammals.

B. Autodiastylic: This type of jaw suspension is seen in some early amphibians and involves a direct connection between the jawbone (dentary) and the skull, with no additional supporting bones. This is not the typical jaw suspension in mammals either.

C. Hyostylic: This type of jaw suspension is found in some fish and is characterized by a connection between the jaw and the skull through a hyomandibula bone. It is not the typical jaw suspension in mammals.

D. Craniostylic: This type of jaw suspension is the most relevant to mammals. In craniostylic jaw suspension, the jaw is directly attached to the skull, specifically to the squamosal bone in the mammalian skull. This is the typical jaw suspension seen in most mammals.

So, the correct answer is D. Craniostylic.