class Lamellibranchia vs class Pelecypoda

class Lamellibranchia and class Pelecypoda both are nouns.

Word	Noun	Adjective	Verb	Adverb
class Lamellibranchia	Yes	No	No	No
class Pelecypoda	Yes	No	No	No

As nouns, class Lamellibranchia and class Pelecypoda are synonyms defined as:

class Lamellibranchia and class Pelecypoda: oysters, clams, scallops, mussels

Other synonyms of class Lamellibranchia include Bivalvia, class Bivalvia, Lamellibranchia.

class Lamellibranchia (noun)	class Pelecypoda (noun)
oysters, clams, scallops, mussels	oysters, clams, scallops, mussels