This article
possibly contains original research. Has various speculative notes marked with "?" in it, commented out now, and numerous unsourced entries, and suppositional identifications of one breed with another, without sources, AND annotations marked with "→" that are not clearly distinguishable from those marked with "=".
Please improve it by verifying the claims made and adding inline citations. Statements consisting only of original research should be removed. (February 2018) (Learn how and when to remove this message)