Home›Class›Era First Appeared›QuaternaryBrowse ByQuaternaryFactsQuaternarySourcesComments (0)Reader Challenges (0)FactsComparisonTaxonomic Rank OrderWell-attested4 1QuaternaryFilter Results1 entryTaxonomic RankAllClass (1)Common GroupAllFlatworm Classes (1)Everyday GroupAllFlatworm Classes (1)Living or ExtinctAllYes (1)Show ResultsTurbellariaQuaternarySources1. 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.