Times 2 Jumbo 321

[MCC]

Struggling with last two - hope I've got the letters right, but no cast-iron guarantees!
16 ac - Common fossil(9) - T?I?O?E?E
31 ac - Australian fish (10) - ?A?R?M?N?I

[ladyalex]

31a barramundi

[baitress]

16a - trilobite.
I assume you mean Times 2 Jumbo 801.

[MCC]

Thanks very much, both of you.
I assume the "foolish person" at 4 down is a nitwit, not a nutter!
As regards the number, I know what you mean, Baitress, but the Times 2 has a different number on the website, presumably because it came into existence after the cryptic version.

[baitress]

MCC I didn't know about the website, I only buy the paper so I can print out the grid twice and then do both the cryptic and the Times 2.

[MCC]

Hi, baitress - do you buy the paper twice? It costs to join the 'Crossword Club', but it's probably cheaper than buying the Times twice weekly - and you can enter online so there's a bob or two in saved postage! Thanks for your help, again.