The temporal muscles that close the jaws descend through these openings ... In most lizards, bar closing the lower fossa has been lost in lizards, leaving a single opening and an arch. In snakes, the ...

‘Modified anapsid’ condition increases power of bite. Holes arose in dermal roof, muscles pass through roof to attach on outside of skull. Moose is ‘true synapsid’ skull. Temporal fossa separated from ...