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What exactly is the usefulness of listing all fauna from everywhere present in an entire stage? Wouldn't it be more practical to break down by geographic region and list geologic formations, which then go on to list collections of fauna? Dinoguy2 (talk) 06:50, 13 September 2008 (UTC)
It makes up for us not using categories for any rank of geologic time below the epoch level. Abyssal (talk) 06:54, 13 September 2008 (UTC)