The bones that go into the frog’s skull?

The frog’s skull is heavily cartilaginous.
The outside is covered with a small amount of false bones. The occipital region of the skull contains the lateral occipital bones (the upper and lower bones do not develop, leaving the cartilage). The occipital condyles are also located there for connection with the cervical vertebra. In the auditory region, only one paired anterior bone develops. The anterior part of the orbital region is formed by the annular cuneiform bone. The olfactory region remains cartilaginous.