Relating to or resembling the family Cypridinidae, or a member of the superfamily Cypridinoidea of bioluminescent ostracods.
From Cypridina (genus name) plus -oid (meaning 'resembling or similar to'). The suffix -oid comes from Greek -eides, used in scientific classification to indicate group similarities.
Cypridinoid ostracods represent a whole branch of evolution dedicated to bioluminescent communication in the pitch-black depths of the ocean where no sunlight penetrates—their light shows might be mating signals, predator deterrents, or chemical communication we still don't fully understand.
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