Acanthascus (Rhabdocalyptus) dawsoni Tabachnick 2002 Dataset Rank SPECIES Classification kingdom Animalia phylum Porifera class Hexactinellida order Lyssacinosida family Rossellidae genus Rhabdocalyptus species Rhabdocalyptus dawsoni Name Homonyms Acanthascus (Rhabdocalyptus) dawsoni Tabachnick 2002 Acanthascus dawsoni Dohrmann 2012