Well isn't that special.

Yours, TheOwl, is broken at both ends. I loaded it into Poser and immediately saw the artifacts (two of them).

I imported it into Blender and re-exported and then loaded into Poser, and the artifacts are gone. Blender fixed something. I know that Blender pays zero attention to normals on import (it says so in the export dialog, to tell you not to bother exporting them). But I exported them anyway, just to be sure. So unless the coordinates were modified, it has something to do with normals.

It will take a while to sort out what changed during the pass through Blender import/export.

But even if I find it, what will you do about it? You're not doing anything strange, right? It's just a cylinder.

Maybe this is a bug in Maya.  LOL

Render shows your original and also my transformed version of it, via Blender.

I'm going to bed now.

---

Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)