Heraldic and legendary winged dragon with two legs (6)

I believe the answer is:

wyvern

(Other definitions for wyvern that I've seen before include "Fabulous creature" , "Dragon with wings in medieval heraldry" , "Heraldic form of dragon" , "Heraldic winged monster" , "Heraldic dragon with two legs and two wings" .)

I've seen this clue in The Times.

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