goniomonadea goniomonadea goniomonadea is a proposed class of cryptomonads which includes the orders goniomonadida and hemiarmida. hemiarma marina scientific classification domain: eukaryota (unranked): hacrobia (unranked): cryptista superclass: cryptomonada class: goniomonadeacavalier-smith 1993 orders goniomonadida hemiarmida taxonomy order goniomonadida novarino & lucas 1993 family goniomonadidae hill 1991 genus goniomonas von stein 1878 order hemiarmida cavalier-smith 2017 family hemiarmidae cavalier-smith 2017 genus hemiarma shiratori & ishida 2016