Ludwigia agria (FOSSIL) Buckman †
Ludwigia ambigua (FOSSIL) Buckman †
Paquieria angulata (FOSSIL) S.S. Buckman, 1899 †
Graphoceras apertum (FOSSIL) (Buckman) †
Graphoceras arcitenens (FOSSIL) Buckman †
Graphoceras arcuatum (FOSSIL) (Buckman, 1901 †)
Canavarella arenacea (FOSSIL) Buckman †
Ludwigia armipotens (FOSSIL) (Buckman †)
Graphoceras attenuatus (FOSSIL) (Buckman, 1901 †)
Graphoceras attractum (FOSSIL) (Buckman, 1904 †)
Ludwigia baylei (FOSSIL) (Buckman †)
Leioceras bifidatum (FOSSIL) (Buckman, 1899 †)
Graphoceras blandum (FOSSIL) (Buckman, 1901 †)
Graphoceras blenda (FOSSIL) Buckman †
Brasilia bradfordensis (FOSSIL) (Buckman, 1887 †)
Ludwigia brasili (FOSSIL) (Buckman †)
Ludwigia bullifera (FOSSIL) Buckman †
Graphoceras callosum (FOSSIL) (Buckman, 1901 †)
Graphoceras carinata (FOSSIL) (S.S. Buckman, 1904 †)
Ludwigia carinferum (FOSSIL) (Buckman) †
Leioceras carinifera (FOSSIL) (Buckman, 1899 †)
Leioceras cariniferum (FOSSIL) Buckman †
Graphoceras castum (FOSSIL) (Buckman, 1901 †)
Graphoceras cavata (FOSSIL) Buckman †
Ludwigia cirrata (FOSSIL) Buckman †
Reynesia coela (FOSSIL) Buckman †
Graphoceras compactum (FOSSIL) Buckman †
Ludwigia compressum (FOSSIL) Buckman †
Leioceras comptocostosum (FOSSIL) D.M. Chandler& P. Callomon, 2009 †
Leioceras comptum (FOSSIL) (Reinecke, 1818 †)
Graphoceras concavum (FOSSIL) (J. de C. Sowerby,1815 †)
Ludwigia cornu (FOSSIL) (Buckman, 1881 †)
Ludwigia cosmia (FOSSIL) (Buckman †)
Costileioceras costosum (FOSSIL) (F.A. von Quenstedt,1886 †)
Brasilia crinalis (FOSSIL) (Buckman) †