To date, only one fossil skull has been found to suggest a larger ancestor.

This species is known from a fossil skull about 65 cm long.

Some scientists have even speculated that the two partial fossil skulls come from the same individual.

The one known fossil skull of Abelisaurus is incomplete, especially on the right side.

Payne-got some fossil skulls from a friend at the museum and tested them to see how far back in time the effect went.

It was a skull, certainly - but not a fossil skull.

The objective measurement of fossil skulls has apparently never been easy.

As it happens, no complete fossil skulls of adult titanosaurs have ever been discovered.

A complete fossil skull has yet to be discovered.

Palaeomyrmidon is known from a fossil skull that was found in Argentina.