European died, swallowed by Asian land mammal (7)
I believe the answer is:
echidna
'mammal' is the definition.
(echidna is a kind of mammal)
'european died swallowed by asian land' is the wordplay.
'european' becomes 'E' (abbreviation e.g. EU).
'died' becomes 'd' (abbreviation next to the year of someone's death).
'swallowed by' is an insertion indicator.
'asian land' becomes 'China' (country in Asia).
'd' going within 'china' is 'chidna'.
'e'+'chidna'='ECHIDNA'
(Other definitions for echidna that I've seen before include "One preying on the workers" , "Toothless type" , "Creature with spines" , "Insectivorous mammal" , "Spiny egg-laying Australian mammal" .)