class Ophiuroidea vs Ophiuroidea

class Ophiuroidea and Ophiuroidea both are nouns.

Word	Noun	Adjective	Verb	Adverb
class Ophiuroidea	Yes	No	No	No
Ophiuroidea	Yes	No	No	No

As nouns, class Ophiuroidea and Ophiuroidea are synonyms defined as:

class Ophiuroidea (noun)	Ophiuroidea (noun)
brittle stars and basket stars	brittle stars and basket stars