PLATE X. 



Fig. 1. Sandalodus parvulus. Upper surface 102/r 'K.n*** s, VtrM ^ 



] a. Profile view. 



Fig. 2. Sandalodus spatulatus 103 " 



Fig. 3. Sandalodus angustas 103 JuvK*« 1 L '' 



Fig. 4. Sandalodus carbonarius 104 C»-."{ Viv 



5. Larger specimen of opposite side. 



Fig. 6, 7, 8. Sandalodus l^vissimus 104 id,: iUiL 1 aytnd 



Fig. 9. Sandalodus grandts 105 



Fig. 10. Rinodus calceolus. Seen from above 106 J4awvt(i/* Qr«v 



10 a. Side view. 



10 b. Profile section. 



10 c. Portion of triturating surface, magnified. 







