Hopefully, this crosswords isn't too cryptic.
Some commentary and hints:
18A: This word has many different spellings, and I've seen all with similar frequency. According to Merriam Webster CZARS is the most common one. I went, however, with TZARS , which to me felt like the more widely used one.
48A: I tried to get rid of this word, once I saw that it was the only possible fill. After spending a few hours, I was no further. At least, we can all learn some new science vocabulary. BIOTYPES
58A: The name is: MEI . Of course, myself is part of a trio in ME, myself, and I .
92D: This one requires the knowledge, that PAN is the GOD of the wild (among other things) in greek mytheology .