Extinctions of wild panda species ingesting argon (14)

I believe the answer is:

disappearances

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'extinctions' is the definition.
The answer and definition can be both acts as well as being plural nouns.
Perhaps you can see a link between them that I don't see?

'wild panda species ingesting argon' is the wordplay.
'wild' is an anagram indicator.
'ingesting' is an insertion indicator.
'argon' becomes 'Ar' (Ar is the chemical symbol for argon).
'panda'+'species'='pandaspecies'
'pandaspecies' with letters rearranged gives 'disappeances'.
'disappeances' enclosing 'ar' is 'DISAPPEARANCES'.

'of' acts as a link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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