TABLE V. COMPARISON OF FRECCTENCY DISTRIBUTION OF TYPES OF PELLET WITH VARIOUS SCHEMES OF
CLASSIFICATION OF THE BIVALVIA
Schemes of classification
~~
____
_ _ ~ - ~
Dall (1894)
PRIONODESMACEA
Ord.
ANOMA4LODESMACEA
TELEODESMACEA
Pelseneer ( 19 1 1 )
PROTOBRSNCHIA
Ord.
FILIBR ANCHIA
PSEUDOLAMELLIBRANCHIA
EULAMELLIBRANCHIA (No.)
( Y O )
((30)
SEPTIBRANCHIA
(No.)
I
1
2
Pellet-types
I1
I I A
I11
Total
3
4
5
6
7
8
9
10
11
-
3
-
4
7
8
8
4 6 -
76 spp.
-
3.9 -
5.3
9.2 10.5 10.5
60.5 -
100%
4
-
-
-
-
-
-
2
6 SPP.
~
66.7 -
-_
-
-
-
-
33.3 looyo
1 0 2 9
3
-
-
-
-
1
1
82spp.
12.2 3.5,4
3.7 -
-
-
-
1.2
1.2 l000/,
-
-
-
2
6.7
1
3.0
33
36.7
-
-
-
-
28
93.3
16
48.5
3
3.3
-
-
11 spp.
looyo
looyo
33 spp.
looyo
88 spp.
100%
2 SPP.
loo?/,
30 spp.
414
KOHMAN Y . ARAIIAWA