As nouns the difference between infraclass and parvclass
is that infraclass is (taxonomy) a zoological classification sometimes inserted below subclass and above superorder while parvclass is (taxonomy) a taxonomic category below infraclass and above order.
infraclass
English
Noun
(es)
(taxonomy) A zoological classification sometimes inserted below subclass and above superorder
parvclass
English
Noun
(es)
(taxonomy) A taxonomic category below infraclass and above order.