ANATOMY AND SYSTEMATICS OF CARDIOLUCINA 



117 



Fig. 27 Cardiolucina lamothei (Dautzenberg, 1913) and C. rehderi (Britten, 1972). a, C. kunuthei lies de Los. nr Conakry. Guinea (NMW 1955.158) Left 

 valve. P35.082; b, left valve interior; c, C. rehderi Britton, left valve, Paratype NMNH; d, left valve interior. Scale bar a-d = 1.0mm. 



DISTRIBUTION. Known only from type material reported on by 

 Britton (1972). 



Fig. 28 Geographical distribution of Cardiolucina lamothei 

 (Dautzenberg). Data from Dautzenberg (1913). 



FOSSIL SPECIES OF CARDIOLUCINA 



Apart from the description of the type species C. agassizi, we have 

 not attempted a comprehensive review of the fossil record. How- 

 ever, the species listed below have the characters of Cardiolucina. 

 Other fossil species that we do not consider to belong the genus are 

 listed separately. 



Phacoides (Parvilucina) ligatus Cossmann and Pissarro, 

 1904. (pages 17-18, pi. 7, figs 1-4). 



Described from the Eocene (Lutetian) of Hauteville, Cotentin Pe- 

 ninsula, France. This small species has a thick shell and prominent 

 concentric lamellae with fine radial ribbing similar to that of 

 Cardiolucina agassizi- Chavan (1937: 207) first suggested that this 

 species should be classified as a Bellucina. On the basis of the 

 published figures, we consider that this is probably the earliest 

 known Cardiolucina. 



Lucina nuciformis Tate, 1887b: 144 (figured in Tate, 1886, 

 p. 158, pi. 12 figs. 10a &b). 



