Home›Class›Era First Appeared›PermianBrowse ByPermianFactsPermianSourcesComments (0)Reader Challenges (0)FactsComparisonTaxonomic Rank OrderWell-attested4 1PermianFilter Results3 entriesTaxonomic RankAllClass (3)Common GroupAllGymnosperm Classes (1)Hemichordate and Tunicate Classes (1)Moss, Liverwort and Hornwort Classes (1)Everyday GroupAllGymnosperm Classes (1)Hemichordate and Tunicate Classes (1)Moss, Liverwort and Hornwort Classes (1)Living or ExtinctAllYes (3)Show ResultsBrowseCompareSelect all 3AscidiaceaPermianBryopsidaPermianGnetopsidaPermianSources1. Wikipedia: Taxonomic ranktier 2WikipediaTaxonomic rank, Fundamental ranks section, rank sequence sentence, classQuote, Taxonomic rank, Fundamental ranks section, rank sequence sentence, classkingdom, phylum or division, class, order, family, genus, and speciesView the SourceComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.