The Transition of Maile

[Nathan Ross]

wait, what about this here:

...Two examples of Roman lorica hamata squamataque ... one of which was preserved with its linen liner.

Good find - thanks! 'Hamata Squamataque' would necessarily be rather more rigid than normal mail though, and may have needed the linen backing or liner as a support. But the preservation of a liner with this very particular style of mail and the lack of any trace of such in other styles might reinforce the idea that they were not used with normal mail.

up to this point i thought only mail from Roman period was the one from Dura Europos..

There's quite a bit, in fact, although mostly fragmentary. The Vimose shirt is one of three relatively complete mail armours from the period, as far as I know, along with the Arbeia one and the Dura 'Persian trident' example. Some publications suggest it was not actually Roman but native Germanic; make of that what you will...