The phrase "a certain skull" is correct and usable in written English.
It can be used when referring to a specific skull that is not named or identified but is known to the speaker and listener.
Example: "In the museum, there was a certain skull that intrigued the visitors with its unique features."
Alternatives: "a particular skull" or "one specific skull".
With his prominent teeth and tight skin, his face had a certain skull-like quality that suggested Conrad Veidt in the German Expressionist films of the '20s, yet there was a watery, vulnerable quality in his large blue eyes that could sometimes make him seem almost childlike.
Which is a genetic disorder characterized by the premature fusion of certain skull bones.
Despite the differences in form, certain skull features are found in all known tyrannosauroids.
The species differ only in the shape of the crest in adult males (described above), and possibly in the angle of certain skull bones.
The suitable ages for hearing aid implantation differ among each treatment option, as some of the devices require certain skull bone thickness.
In less threatening territory, the eye orbits on certain skulls can be spectacular — the immense orbits of a tarsier, for example, are often as large as the entire rest of the skull; they provide a classic example of a skull detail that suggests how well or ill an animal can use a certain sense, in this case, its vision.
We found that the catalogs and documentation we had were not sufficient to say whether certain skulls needed to be returned.
This belief that people of a certain nose size, skull shape, or skin tone were inherently more criminal, immoral, or less intelligent quickly took Galton to the ugly places one would expect it might.
At a moment when the art market is too often mistaken for the art world, and Tate Modern's own Turbine Hall hosted a certain diamond-studded skull, it is a fine thing for the museum to be introducing live art to a wider public.
A certain thickness of skull bone is needed for the implantation of the transducer.
