Home›Division›Era First AppearedBrowse ByEra First AppearedFactsEra First AppearedSourcesComments (0)Reader Challenges (0)FactsComparisonTaxonomic Rank OrderWell-attested3 1Era First AppearedPrecambrianEra First Appeared1 entrySilurianEra First Appeared2 entriesDevonianEra First Appeared3 entriesPermianEra First Appeared1 entryTriassicEra First Appeared2 entriesPaleogeneEra First Appeared1 entrySources1. Wikipedia: Taxonomic ranktier 2WikipediaTaxonomic rank, Fundamental ranks section, rank sequence sentence, divisionQuote, Taxonomic rank, Fundamental ranks section, rank sequence sentence, divisionkingdom, 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.