As to his exact identification and period, there are number of premises.

A conger glided by, too fast for more exact identification.

"If you showed that photograph to a paleontologist, I have every expectation he could give you an exact identification."

An exact identification was never made.

An exact identification is difficult, he added, because the members of this family look alike in the various images that survive.

A magnifying glass or a stereo-microscope can be used for the exact identification.

I can make no exact identification other than that it is humanoid.

There were other birds described in early literature from the 19th century, but the exact identification of these samples cannot be done due to lack of information.

The exact identification of several gates is a debatable, for a number of reasons.

There was something slimy with legs dangling from his mouth, but before I could manage an exact identification, my pet swallowed and the what-zit disappeared.