Across
Marsupial’s origin? Australian territory, principally (6)
I haven't cracked this one yet — but Fifteensquared have:
WOMB (origin) + first letters of Australian Territory
Walk round hospital to get suture (6)
I haven't cracked this one yet — but Fifteensquared have:
H in TREAD
What’s in this shoe? I don’t believe it! (2,4)
Rare event in field that may involve a couple of ducks (3,5)
I haven't cracked this one yet — but Fifteensquared have:
When a bowler gets a hat trick in cricket, at least two of the batters will have scored a duck. Thanks to several commenters who point out that this is not necessarily the case. The clue says “may involve” so Vulcan gets a pass, even if I don’t.
The country of Somalia? (4)
The port of Salerno? (3,7)
Fierce cat: it chewed an official document (11)
Deny island is to be converted into theme park (10)
A sign to leave the auditorium (4)
I haven't cracked this one yet — but Fifteensquared have:
Pretty much a straight definition
A fool and an unruly youth become troubled (8)
I haven't cracked this one yet — but Fifteensquared have:
A GIT (fool) + A TED (Teddy Boy, unruly youth)
Intelligent means of applying pressure to Conservative (6)
Uniform not recorded by railway (6)
After time children’s author is cheap (6)
Down
I’m at Alabama city and I’m not moving (8)
I haven't cracked this one yet — but Fifteensquared have:
I’M + MOBILE (city in Alabama)
Dolly’s role, performing (6)
After riot her moving, initially calm, speech (8)
I haven't cracked this one yet — but Fifteensquared have:
(RIOT HER)* + C[alm]
For this study several years, or sixty minutes (6)
Two rhymes for say ‘ambush’ (6)
Daughter putting topping on cake and cutting it up? (6)
Workers’ appearance for informal vote (4,2,5)
Film, plays, and a party (3,5)
Sickness noted away from centre in Egyptian city once (3,5)
I haven't cracked this one yet — but Fifteensquared have:
NoteD less its centre in THEBES
Mendelssohn’s caveman? (6)
I haven't cracked this one yet — but Fifteensquared have:
A reference to Mendelssohn’s Hebrides Overture, also known as Fingal’s Cave after the geological feature on the Isle of Staffa
Better years for glad rags (6)
Time to drop into unpretentious local (6)
I haven't cracked this one yet — but Fifteensquared have:
T in NAIVE
Rule at Christmas? Stop scratching! (6)
Type letters or click words in the clue