Pyknotylacanthus spathianus Mutter & Rieber, 2005 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Chordata class Elasmobranchii genus Pyknotylacanthus species Pyknotylacanthus spathianus Name Homonyms Pyknotylacanthus spathianus Mutter & Rieber, 2005