title: Grantia
text: Grantia is een geslacht van sponsdieren uit de klasse van de Calcarea (kalksponzen).
  
  Soorten 
   Grantia aculeata Urban, 1908
   Grantia arctica (Haeckel, 1872)
   Grantia atlantica Ridley, 1881
   Grantia beringiana Hozawa, 1918
   Grantia canadensis Lambe, 1896
   Grantia capillosa (Schmidt, 1862)
   Grantia comoxensis Lambe, 1893
   Grantia compressa (Fabricius, 1780)
   Grantia cupula (Haeckel, 1872)
   Grantia extusarticulata (Carter, 1886)
   Grantia fistulata Carter, 1886
   Grantia foliacea Breitfuss, 1898
   Grantia genuina Row & Hozawa, 1931
   Grantia glabra Hozawa, 1933
   Grantia harai Hozawa, 1929
   Grantia hirsuta (Topsent, 1907)
   Grantia indica Dendy, 1913
   Grantia infrequens (Carter, 1886)
   Grantia intermedia Thacker, 1908
   Grantia invenusta Lambe, 1900
   Grantia kempfi Borojevic & Peixinho, 1976
   Grantia kujiensis Hozawa, 1933
   Grantia laevigata (Haeckel, 1872)
   Grantia mexico Hôzawa, 1940
   Grantia mirabilis (Fristedt, 1887)
   Grantia monstruosa Breitfuss, 1898
   Grantia nipponica Hozawa, 1918
   Grantia phillipsi Lambe, 1900
   Grantia primitiva Brøndsted, 1927
   Grantia ramulosa Dendy, 1924
   Grantia scottia (Jenkin, 1908)
   Grantia singularis (Breitfuss, 1898)
   Grantia socialis Borojevic, 1967
   Grantia strobilus (Haeckel, 1872)
   Grantia stylata Hozawa, 1929
   Grantia tenuis Urban, 1908
   Grantia transgrediens Brøndsted, 1931
   Grantia tuberosa Poléjaeff, 1883
   Grantia uchidai Hozawa & Tanita, 1941
   Grantia vosmaeri Dendy, 1893
   Grantia waguensis (Hozawa, 1940)
  
  Kalksponzen