Phylum Mollusca Linnaeus, 1758 - molluscs
Count: [*†*] 8c;49o;641f;6099g; †2f;162g [24 Jan 2022]
   Class Bivalvia Linnaeus, 1758 - bivalves
  Count: [*] 13o;124f;1093g; †2f;26g [23 Jan 2022]
     Subclass Heterodonta Neumayr, 1884 see Clade Heterodonta Neumayr, 1884
    Count: [*†*] 3o;66f;605g; †4g [22 Jan 2022]
       Order Chamida see Order Venerida Gray, 1854
      Count: [*†*] 37f;290g; †2g [19 Jan 2022]
         Superfamily Veneroidea Rafinesque, 1815
        Count: [*] 5f;81g [19 Jan 2022]
           Family Petricolidae d'Orbigny, 1840 - rock borers see Subfamily Petricolinae d'Orbigny, 1840
          Count: [*] 3g [19 Jan 2022]
             Genus Petricola Lamarck, 1801
            Count: -
               1 Subgenus Claudiconcha Fischer, 1887
              Count: -
               2 Subgenus Petricolirus Habe, 1951
              Count: -
               3 Subgenus Psedoirus Millard, 1996, orth. inval. see Subgenus Pseudoirus Habe, 1951
              Count: -
               4 Subgenus Velargilla Iredale, 1931
              Count: -