Should taxonomy terms such as Crustacea be capitalized? I think yes, but am unsure.
- Anybody can ask a question
- Anybody can answer
- The best answers are voted up and rise to the top
It depends on which level of taxonomy that term is. For genus and higher, names are capitalized. Species and terms more specific than species (like variety and subspecies) are not capitalized.
Thus, for your example, Crustacea should be capitalized because it is a subphylum.
More details can be found here.