The ear canal, middle ear and inner ear are all within the temporal bone. The temporal bone is part of the skull above the ear. One part of the temporal bone is called the mastoid bone. It is the ...

The temporal muscles that close the jaws descend through these openings. 3. Dermal skull roof or dermatocranium A shield of membrane or dermal bone covering the top and sides of the head and extending ...

A new study by Ohio University found an important fossil of the oldest known modern bird, which lived in Antarctica when Tyrannosaurus rex ruled North America.

1. Lizard has space on side of skull, reflecting loss of second temporal fossa. Has one fossa, one arch 2. Bird has one large cavern, with all bars between orbit and temporal fossae lost. i. Decrease ...