How to spell CORECIIFORMS correctly?

If you meant "Coreciiforms" and not "Corecii forms", there are a few possible corrections. It could be "Coraciiforms", referring to a group of birds including kingfishers and bee-eaters. Another option might be "Coryciiforms", which is a non-existent word but might be related to the name "Corycia". Ultimately, it depends on the context and intended meaning.