Where does “dinophycean” come from?

dinophycean (English) comes from English dino-, from Ancient Greek δεινός, from Ancient Greek ὄνυξ, from Proto-Indo-European h₃nogʰ- — claw, nail; nail.

dinophycean (English): Any benthic dinoflagellate of the class Dinophyceae

Definitions

Any benthic dinoflagellate of the class Dinophyceae

Ancestry of “dinophycean”, step by step

Step	Language	Word	Meaning
1	English	dino-	Used for presumably fearfully large or dangerous...
2	Ancient Greek	δεινός	terrible, horrible, fearful, astounding; danger;...
3	Ancient Greek	ὄνυξ	claw, nail, hoof, talon; Anything which resembles...
4	Proto-Indo-European	h₃nogʰ-	claw, nail; nail

Every word from Proto-Indo-European h₃nogʰ- →Every word from Ancient Greek ὄνυξ →Every word from Ancient Greek δεινός →