Antonyms of adj allochronic

1 sense of allochronic

Sense 1
allochronic -- ((of taxa) occurring in different geologic times)

INDIRECT (VIA asynchronous) -> synchronous, synchronal, synchronic -- (occurring or existing at the same time or having the same period or phase; "recovery was synchronous with therapy"- Jour.A.M.A.; "a synchronous set of clocks"; "the synchronous action of a bird's wings in flight"; "synchronous oscillations")

Similarity of adj allochronic

1 sense of allochronic

Sense 1
allochronic -- ((of taxa) occurring in different geologic times)
       => asynchronous (vs. synchronous) -- (not synchronous; not occurring or existing at the same time or having the same period or phase)