Suffixes are word endings that are added to the end of a word to change its meaning or grammatical function.
It's possible that "subclassified" was intended as a verb formed from the noun "subclass" by adding the suffix "-ed." In this case, it would mean to classify something into a subclass.
However, without more context, it's difficult to determine the intended meaning of "subclassified."
Could you provide more information about where you encountered this term? This would help me understand the context and provide a more accurate answer.