Context: In 1976 John Goldsmith introduced autosegmental phonology. Phonological phenomena are no longer seen as operating on one linear sequence of segments, called phonemes or feature combinations, but rather as involving some parallel sequences of features which reside on multiple tiers. Autosegmental phonology later evolved into feature geometry, which became the standard theory of representation for theories of the organization of phonology as different as lexical phonology and optimality theory.

Question: Who founded autosegmental phonology?
Answer: John Goldsmith

Question: When did John Goldsmith share his work?
Answer: 1976

Question: What did Autosegmental phonology morph into?
Answer: feature geometry

Question: Who founded operating tiers?
Answer: Unanswerable

Question: When did John Goldsmith publish his work?
Answer: Unanswerable

Question: What did operating tiers morph into?
Answer: Unanswerable

Question: What are no longer seen as operating on lexical phonology?
Answer: Unanswerable

Question: What became the standard theory of phenomes?
Answer: Unanswerable