Caecum bimarginatum P.P. Carpenter, 1859
Caecum bipartitum L. de Folin, 1870
Caecum borneoensis L. de Folin, 1867
Meioceras boucheti M. Pizzini & B.K. Raines,2011
Caecum bounty M. Pizzini & B.K. Raines,2011
Caecum brasilicum L. de Folin, 1874
Caecum brennani B.K. Raines & M. Pizzini,2009
Caecum breve L. de Folin, 1867
Caecum bucerium A.N. Golikov, 1967
Caecum californicum W.H. Dall, 1885
Caecum calvertense (FOSSIL) Martin, 1904 †
Caecum campanulatum B.K. Raines & M. Pizzini,2005
Caecum campe (FOSSIL) H.A. Pilsbry& A.A. Olsson, 1941 †
Caecum carolinianum W.H. Dall, 1892
Caecum carpenteri (P. Bartsch, 1920)
Caecum carpenteri (FOSSIL) G.P. Deshayes, 1861 †
Caecum caverna R.G. Moolenbeek, M.J. Faber& C.G. Iliffe, 1989
Parastrophia challengeri L. de Folin, 1880
Caecum chilense J. Stuardo, 1962
Caecum chinense L. de Folin, 1867
Caecum chipolanum (FOSSIL) Gardner, 1947 †
Caecum cinctum A.A. Olsson & A. Harbison,1953
Caecum circumvolutum Folin, 1867
Caecum clarkii P.P. Carpenter, 1859
Caecum clarum É. Lamy, 1910
Caecum clathratum P.P. Carpenter, 1857
Ctiloceras clathratum C. Hedley, 1902
Caecum clava L. de Folin, 1867
Caecum cocoense J.A. Sibaja-Cordero, K. García-Méndez& J.S. Troncoso, 2013
Caecum codoceoae Gálvez & Huidobro, 2017
Caecum compactum P.P. Carpenter, 1857
Caecum complanatum L. de Folin, 1867
Jayella compressa T. Iredale & C.F. Laseron,1957
Caecum condylum R.C. Moore, 1969
Caecum continens J. van der Linden& R.G. Moolenbeek, 2000