A recent analysis of the genus found there to be 12 valid species.

T. gladius is no longer considered a valid species, however.

At the time, however, the mineral was not recognized as a valid species.

These may be described as valid species in the future.

As of current knowledge, it remains the only other valid European species.

A number of species described during this period have turned out not to be valid species.

Both the valid species and the gold from have been available to Killi-keepers for many years.

A recent genetic study found that it was in fact a valid species, and is probably extinct.

More recent research has shown that it is a valid species.

G27, neither of which were described as valid species.