Cephalophora ; Cephulopoda. 



Ordo 2. Siphoniphora, d'Orbign. 

 Fam. 1. Spirulaceae, d'Orbign. 

 Spirula, Lam. 



Peroni, Lam. (Nautilus spirula, L.) 

 Fam, 2. ISautileaef d'Orbigu. 

 Nautilus, L. 



pompiiius, L. 

 Lituitus, -t»*ft. JUrif* 

 Orthoceratites , Breyn.^ Lam. 



Fam. 3. Ammoniteae, Lam. 

 Baculites, Lam. 



Hamites, Sow. (Ammonoceratitfs, Lam.) 

 Scaphites, Sow. 

 Ammonites, Br. Lam. (Orbulites, Lam.^Globites, Go- 



niatites, Planites, Ammonites et Ceratites, 



Haan. ) 

 Turrilites, Lam. (Turrites, Haan.) 



Fam. ti. Peristolata, (Peristellees , d'Orbign.) 



Ichthyosarcolithes, Desmarest. (Rhabdites, Haan.) 

 Belemnites, Cuv* (Belemnites, Rhaphanister et al. 

 Montf.^ 



Ordo3. Trematophora» (Foraminiferes, d'Orbign.) 

 Fam. 1. Stichostegeae , d'Orbign. 



Nodosaria, Lam. 

 Lingulina , d'Orbign. 

 Frondicularia, — 

 Rimulina, — 



Vaginulina, — 



Marginulina, — 

 Planularia, — 



Pavonina, — 



c 



