At times, it has been considered dubious or a valid genus.

This letter was taken as evidence concerning two points considered dubious by modern scholars.

Nxe4 c5 d5 is considered slightly dubious due to Nxe4!

The move can lead to more open positions than the other lines, but is often considered dubious.

Although this species has been recorded from the southern North Sea, those records are considered dubious.

The type specimen has also been lost, so the status of this class is considered dubious.

In this period a woman working outside the home was considered morally dubious.

At the very least, his fascination for little girls is today considered dubious.

Both species are based on fragmentary material, and are today considered dubious.

This is a pawn sacrifice, and was once considered dubious.