Home›Other Invertebrate Orders›Era First Appeared›SilurianBrowse BySilurianFactsSilurianSourcesComments (0)Reader Challenges (0)FactsComparisonTaxonomic Rank OrderWell-attested5 1SilurianFilter Results2 entriesTaxonomic RankAllOrder (2)Common GroupAllArachnid Orders (1)Tusk Shell Orders (Scaphopoda) (1)Everyday GroupAllArachnid Orders (1)Tusk Shell Orders (Scaphopoda) (1)Geographic DistributionAllAfrica (1)Asia (1)Europe (1)North America (1)South America (1)Living or ExtinctAllYes (2)Show ResultsBrowseCompareSelect all 2DentaliidaSilurianScorpionesSilurianSources1. Wikipedia: Taxonomic ranktier 2WikipediaTaxonomic rank, Fundamental ranks section, rank sequence sentence, other invertebrate ordersQuote, Taxonomic rank, Fundamental ranks section, rank sequence sentence, other invertebrate orderskingdom, 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.