Category:Cephalaspidomorphi

Note: This category should be empty. Any content should be recategorised.

This tag should be used on existing categories that are likely to be used by others, even though the "real" category is elsewhere. Redirected categories should be empty and not categorised themselves. It should not be used on categories that are misspellings and thus unlikely to be used by other people.

Such categories should be tagged as: {{bad name|Category:correct name}}. (delete as bad name)