An ideal GSSP would be accessible by Public Transit from a major Airport; would be accessible to research; would be extensive enough to ensure future access; would be easily related to other exposures worldwide; would contain a radiometrically datable bed at the boundary, and would include well defined markers at the stage boundary that can be applied worldwide. No GSSP is ideal. The Precambrian-Cambrian boundary GSSP at Fortune Head Newfoundland is a typical GSSP. It is accessible by paved road and is set aside as a nature preserve. A continuous section is available from beds that are clearly PreCambrian? into beds that are Clearly Cambrian. The boundary is set at the first appearance of a complex trace fossil 'Trichophycus pedum' that is found worldwide. The Fortune Head GSSP is unlikely to be washed away or built over. 'Trichophycus pedum' is less than ideal as a marker fossil as it is not found in every Cambrian sequence, and it is not assured that it is found at the same level in every exposure. But no other fossil is known that would be preferable. There is no radiometrically datable bed at the boundary at Fortune Head, but there is one sightly above the boundary in similar beds not very far away.