ORDER I 



il i<lit i J'n,- in, 



PRIONODESMACEA 



l>ll*Xlfi-r<lH>i, flu- Ill/Mil* 



tli> 



of the 



Lima, Brug. Shell inflated, with ndia] .-ulpimv : l.-aks p.. int. -d, and - -painted 

 liy a lozenge -shaped area; edentulous. CarlM.niferon- to Uecent ; 

 iiiaxiniuni in Mr-.i/oic (over 300 

 species). 



Sub-genera: Lima s. s. 

 auct. non Gray), (Fig. 671). Shell with 



strong radial rihs. 



to, 



Bow. 



Lower (iMlit.-; 

 Bayeux, Calvados. 



Fio. 671. 



/.'///" pectinoidts, Sow. 

 Lower Lias ; Balingen, Wur- 

 teniberg. l/l- 



KM.. 874. 



F fi7 ._, J.imnea. du i 



Fl0 - 6 ' 2 ' Goldf. Qrest 



Lima (Plagiosjpma) gigantea, Sow. Lower Lias ; Oolite ; I^angrune, 



Goppingen, Wurtemberg. 2/g. Nunnamly. 



f Plagiostoma, Sow. (Fig. 672). Smooth ov finely striated. 



Limatiila, Wood (Fig. 673). Medially ribbed, laterally smooth, valves not gaping. 



i-'n.. 1,7:,. 

 Ctenostreon probosculea, Sow. Oxfonlian ; Dives, Calvados. 



Limaea, Bronn (Fig. 674). Small, with Taxodont armatui'.- at the angles of tin- 

 hinge. Lias and Recent. 



Ctenostreon, Eiclnv. (Fig. 675). Compressed, irregular, thick-shelled, with coarse 

 radial ribs. Upper Jura. 



