WIGLEY and STINTON: REMAINS FROM MARINE SEDIMENTS 



Table 8. --Species and density (number per square meter), by station, of the common gastropods. 



CO 



•o 



c 



4 

 5 

 6 

 8 

 9 



10 

 11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 

 27 

 28 

 30 

 31 

 32 

 33 

 34 

 35 

 36 

 37 

 38 

 40 

 41 

 42 

 43 

 44 

 46 

 49 

 51 

 52 

 53 

 54 

 55 

 56 

 57 

 58 

 60 

 61 

 62 

 63 



30 



20 - . - . . 10 - - - 



20 -20 ----20 ---10-50- -10 



30 - 10 40 - - - - ----- 50 - 10 - 



10 - - 10 - - 20 - - - - - 10 40 10 - - 



60 10--- 



20 ----20- -20 



60 ---10 10-30 



10 40-10 



40 --10 ------- 10- 



200 - - - 10 - - - 100 - - - - 40 - - 30 - - - 10 - 10 20 



20 20 10- 



10 



10 30 10- 



10 - - 10 - - 10 - - 10 - - - 10 - 20 - 



20 -20 ---10- 50-10- 



10 



630 - - - 10 - - - 410 - - - - 



530 20 10 - - 



10 - - 70 130 



20 ---10 ------ 50 -10 



20 10 --10 



90 --10 ----40 ------ -. 10 ------ 



600 - - - 10 - - - 150 - - - - 20 - 10 - - - 



40 40 10--- 



80 10 20- 



50 20 10 -----so- 

 lo 10 10- -10 so- 

 lo - 10 - 10 30 - - 20 10 - - - 10 - 10 - - - 



20 ------- --20---- --------- 



50- - 



10--- - 



10 



10 - - 30 10 ------ - 



10 10 - - 10 10 



10 10 --10- --30---- -20---10--- 

 10 10 --20 --30 10 10 



10 - - - - so- 

 lo 10- ..--10 --40- 



10 ---10- .-...20--- 



10 50---- -10 10 



20- 



10 ...--10-- ---10 



10 ---10 --30 10 10 



20 --- 



20-- 20-- 



trations were high in silty sand in some areas 

 but were intermediate or low in other locations 

 at similar depths. Densities of gastropod shells 

 were high, intermediate, and low in sand, with 

 no apparent correlation. 



Distribution and Density by Species 



The geographic distributions of the 24 most 

 common forms of gastropods are shown in Fig- 

 ure 13. These charts are based on the data in 



19 



