Cuauhtlan (Mdz10v)

There is another Cuauhtlan glyph, a compound glyph, in the Codex Mendoza on folio 13 verso. That one has an eagle's head and the two front teeth to stand for the phonetic -tlan suffix. There is also another Cuauhtlan glypn that is simply an eagle's head.
The differences of scholarly interpretation for this glyph are not great. Unlike Berdan and Anawalt, Karttunen does not see the locative suffix -tlan (which is supported by the teeth) as meaning a place of abundance of a certain thing. Karttunen preserves that reading for the locative suffix -tla. The gloss definitely supports the paleography of the -tlan suffix. That said, there are intrusive n's, and there is a noun "cuauhtla" (also spelled "cuauhtlah") which means woods, forest, wilderness, and would make a perfectly good place name.
It is worth noting that this place name uses the -tlan postposition on the stem that once had the -tli absolutive (cuauhtli, eagle). Whereas, the place name Cuauhtitlan uses the -titlan postposition on the stem that once had the -tl absolutive (cuahuitl, tree). But in the case of Mictlan Cuauhtlan (Mdz49r), the ligature is not used, so it must not be a requirement.