A biologist, of course, can name many and know the distinct species.

It was thought to be a distinct species until 2011.

The two have not always been accepted as distinct species.

They both agree that this is a separate and distinct species.

However, a majority of the modern sources consider them distinct species.

Some or all of these are often considered distinct species.

However, it was shown in 2004 to be a distinct species.

It was described in 1910 and initially considered a distinct species.

It was described as a separate species distinct from any of these in 2001.

It was not identified as a distinct species until 1991.