Phylum Chordata Bateson, 1885 - chordates
   Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
     Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
       Superorder Neognathae Pycraft, 1900 see Cohort Neognathae Pycraft, 1900
         Order Charadriiformes Huxley, 1867 - shorebirds, gulls, auks
           Suborder Charadrii Huxley, 1867 - shorebirds see Order Charadriiformes Huxley, 1867
             Family Scolopacidae Vigors, 1825 - sandpipers, snipe
               Subfamily Calidrininae Reichenbach, 1849 see Subfamily Calidridinae
                 Genus Calidris [Merrem], 1804
                   Calidris acuminata (Horsfield, 1821) - sharp-tailed sandpiper
                   Calidris alba (Pallas, 1764) - sanderling
                   Calidris alpina (Linnaeus, 1758) - dunlin
                   Calidris bairdii (Coues, 1861) - Baird's sandpiper
                   Calidris canutus (Linnaeus, 1758) - red knot
                   Calidris ferruginea (Pontoppidan, 1763) - curlew sandpiper
                   Calidris fuscicollis (Vieillot, 1819) - white-rumped sandpiper
                   Calidris maritima (Brünnich, 1764) - purple sandpiper
                   Calidris mauri (Cabanis, 1857) - western sandpiper
                   Calidris melanotos (Vieillot, 1819) - pectoral sandpiper
                   Calidris minuta (Leisler, 1812) - little stint
                   Calidris minutilla (Vieillot, 1819) - least sandpiper
                   Calidris ptilocnemis (Coues, 1873) - rock sandpiper
                   Calidris pusilla (Linnaeus, 1766) - semipalmated sandpiper
                   Calidris ruficollis (Pallas, 1776) - rufous-necked stint
                   Calidris subminuta (Middendorff, 1853) - long-toed stint
                   Calidris temminckii (Leisler, 1812) - Temminck's stint
                   Calidris tenuirostris (Horsfield, 1821) - great knot