randman,
Why? What knowledge, basis, etc,...do you have for your beliefs on this?
I readily admitted in the OP that I don't know much about trilobites. Apparently, you don't either, but choose to throw stones at me.
Firstly, there is a book on my bookshelf devoted to trilobites & deals with schizochroal eyes in depth, secondly, I haven't stated my "beliefs", so don't need to support anything. Why do you say "apparently" I don't know about trilobites either when I haven't attempted to educate you?
You, however, have stated that you are "inclined to agree" with the author. Why? You can't tell me why schizochroal eyes are harder than mammalian eyes to explain, you can't even tell me what is surplus to requirements. You are agreeing because you want to massage your preconceptions, sans evidence. You will believe what you want, regardless of lack of support. That's the point.
Mark
There are 10 kinds of people in this world; those that understand binary, & those that don't