subclass Pantotheria vs Pantotheria

subclass Pantotheria and Pantotheria both are nouns.

Word	Noun	Adjective	Verb	Adverb
subclass Pantotheria	Yes	No	No	No
Pantotheria	Yes	No	No	No

As nouns, subclass Pantotheria and Pantotheria are synonyms defined as:

subclass Pantotheria and Pantotheria: generalized extinct mammals widespread during the Jurassic; commonly conceded to be ancestral to marsupial and placental mammals

subclass Pantotheria (noun)	Pantotheria (noun)
generalized extinct mammals widespread during the Jurassic; commonly conceded to be ancestral to marsupial and placental mammals	generalized extinct mammals widespread during the Jurassic; commonly conceded to be ancestral to marsupial and placental mammals