ID help ostreopsis?

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Can someone help me ID this? This is from a brown string i have on all my glass, sand and rocks
 

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www.reef2reef.com

Dinoflagellate Identification Guide

I've had this laying around for a while. Had some recent interest, so I tweaked it a bit and am posting it. Not really about cures just ID pictures, videos, and a few short facts. Hope it can be helpful.
www.reef2reef.com www.reef2reef.com
 

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