holiday crossword stinker no 94

Suggest the following:
23a elizabethian trumpet fanfair 6 letters _ _ ck_s, TUCKET check that 's'
28d, abstact painting genre 5 letters [2-3] o_a_ _ , OP ART
12d wright bros airfield site 9 letters [5-4] _ _ _ _ _ h_ _ k, KITTY HAWK
54a dna molecule segment 4 letters e_ _n, EXON
58a independent[species] 9 letters _ _ _ b _ _ _ c, SYMBIOTIC fits but unsure

I have all the answers that lmur gave.
You need ESTUARY to get rid of the S in 23a.

thankyou so much for your help