Across
Old turtler following excavation discovered fins turned outward (9)
I haven't cracked this one yet — but Fifteensquared have:
EX- (=old, former) + T <urtle> R (“following excavation” means all but first and last letters are dropped) + <d> ORSAL <s> (=fins; “dis- cover -ed”, i.e. “cover” – first and last letters – is dropped); extrorsal means “turned outward”, e.g. of an anther towards a flower
List stuck on one side of my cooking pot (5)
I haven't cracked this one yet — but Fifteensquared have:
BILL (=list, of performers) + <m> Y (“one side of” means first or last only)
Help us to carry Calvin Klein footwear (5)
Earwig goes lower closer to small flies (9)
Recoiling child with temperature given strange medicine (7)
Salt judge put on egg (7)
Tramp with a large rear end from Falkirk (4)
I haven't cracked this one yet — but Fifteensquared have:
W (=with) + A + L (=large, in sizes) + <falkir> K (“rear end in” means last letter only); to tramp is to walk, tread heavily
Cantankerous ill youngster straddles potty (5)
Happy chappies wiping backsides for fun (4)
Continuous striving for money and power beginning to rankle a bit (7)
I haven't cracked this one yet — but Fifteensquared have:
R <ankle> (“beginning to” means first letter only) + A + TRACE (=a bit, small amount of, as in trace element )
Nuns accepting Jesus at last resist going awry (7)
I haven't cracked this one yet — but Fifteensquared have:
<jesu> S (“at last” means last letter only) in *(RESIST); “going awry” is anagram indicator
Drunk seamen screening Ken Loach film are coherent (9)
Here in Quebec undressed we're colder (5)
I haven't cracked this one yet — but Fifteensquared have:
ICI (here in Quebec, i.e. the French word for here ) + <w> E’R <e> (“undressed” means first and last letters are dropped)
Base removed from article in golf bag (5)
Remember - two Finns were involved in this guy's plots (9)
Down
Spice up endless shanty (6)
I haven't cracked this one yet — but Fifteensquared have:
SEASON <g>; “endless” means last letter is dropped
Start to observe twitching of the ear (4)
Prisoner accompanied by kind companion (7)
Man perhaps Dennis cycles after setter (4)
Test score's made when it goes ahead of (10)
Chubbiness of lady's bottom with love bites spread over (7)
I haven't cracked this one yet — but Fifteensquared have:
O (=love, zero score) + *(BITES) + <lad> Y (“bottom” means last letter only)
Indie band and boy band taking ecstasy with Queen (4)
The Astronomer Royal will look into this reported newspaper article (8)
City break (5)
Miss preceded this well-bowled over by upcoming English player (10)
Stagger through a complex network of paths (5)
The beginning or the end for weak male? scoffed colleague (8)
I haven't cracked this one yet — but Fifteensquared have:
W or K (“the beginning (=first letter) or the end (=last letter) of w ea k ) + M (=male) + ATE (=scoffed)
Special gold and green piece of (7)
Low-key performers removing the first of Band-aids (7)
I haven't cracked this one yet — but Fifteensquared have:
<b> ASSISTS (=”low-key” performers, in music); “removing the first (letter) of B and ” means letter “b” is dropped
Series produced by pop star about the origin of reggaeton (6)
I haven't cracked this one yet — but Fifteensquared have:
R <eggaeton> (“origin of” means first letter only) in STING (=pop star, from UK, born 1951); e.g. The man committed a string/series of murders
Use needles to inject young animal with nitrogen (4)
Make the sound of a bird (4)
I'm on a social media platform that provides the bigger picture (4)
I haven't cracked this one yet — but Fifteensquared have:
I’M + A + X (=social media platform, formally Twitter ); IMAX is a system of widescreen cinema presentation, hence “provides the bigger picture”
Type letters or click words in the clue