TARwhoDIS presents Eleanor's Cryptic Crossword

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Across
  1. 2. Empty out the more sanitary (yes, even the internal organs) (5,7)
  2. 4. Underwater animal + 20 £sd (9)
  3. 6. Dinosaurs are birds, but South American Pteradons are not dinosaurs (7)
  4. 7. If Elenor shall, then winterberry shall (9)
  5. 10. A man prefers this over crosswords (4, 2, 4)
  6. 13. Series of things backwards arranged (11)
  7. 14. This thing of beauty allows reductions to where the bits are available (5, 4, 4)
  8. 18. Many Williams tell you to wave shortly (3, 7)
  9. 19. A type of ester that survives a fllame (5)
Down
  1. 1. Brie and Camembert πr^2h/3 (6, 5)
  2. 2. Twenty shillings wailing have nothing to do with my mood (15)
  3. 3. Forward sniggering for backward illiterates (3)
  4. 5. Watch Out! Can flee when mixed with water (5,4)
  5. 8. If you give it a miss you can’t break your ride into 2, 4, 6, 8 (6,4)
  6. 9. A container vehicle with a shortened active front end (6)
  7. 11. The financial penalty you respond with when someone asks you how you are (5)
  8. 12. The type of animal reserve that might be a suit (6, 4)
  9. 15. Game of Croquet at Knox (the bullion depository) (9)
  10. 16. A red label friend (4)
  11. 17. The Mriga Constellation (9)