Question Detail
Question
4. The after-designated type specimen of a species originally based on more than one specimen, where no holotype was designated, is called the
Correct Answer
Option A is the correct answer.
Detailed Explanation
When a species was described using a syntype series (multiple specimens without specifying a single holotype), a subsequent author selects one specimen from that series to serve as the unique name-bearing specimen, termed a lectotype.
Hint
The specimen selected later ('lectus' = chosen) from syntypes.