32 



Thomas G. Thompson and Tsaihwa J. Chow 



Table I (cont.) 



Carbon Organic ' Atom ratio 

 Calcium Strontium dioxide matter Sr 



7o 



/o 



Ca 



X 1000 



(G) PHYLUM MOLLUSCA (continued) 

 CLASS AMPHINEURA, ORDER 



POLYPLACOPHORA 



Ischnochiton heathiana 



I. mertensii 



Ischnochiton sp. 



Katharina tunicata 



Mopah'a ciliata 



M. lignosa 



M.muscosa 



M. muscosa 



M. wosnessenskii 



Chiton (unidentified) 



Calif. 



Calif. 



Wash. 



CaUf. 



Calif. 



Calif. 



Calif. 



Wash. 



Calif. 



Beaufort Sea 



38-7 

 38-6 

 38-8 

 38-7 

 37-2 

 37-9 

 37-9 

 37-8 

 37-6 

 37-0 



(H) PHYLUM MOLLUSCA, CLASS PELECYPODA 

 ORDER FILIBRANCHIA 

 FAMILY ANOMIIDAE 



Pododesmus macroschisma Calif. 



FAMILY MYTILIDAE 



Botula falcata 

 Modiolus capax 

 M. modiolus 

 M. modiolus 

 M. modiolus 

 M. modiolus 

 Modiolus sp. 

 Mytilus edulis 

 M. edulis 

 M. edulis 

 M. edulis 

 M. edulis 

 M. edulis 

 M. edulis 

 M. edulis 

 M. californianus 

 M. californianus 



FAMILY 



Pecten hindsii 

 P. hericius 



Calif. 



Calif. 



N. H. 



N. H. 



N. H. 



N. H. 



Wash. 



N. H. 



N. H. 



Maine 



Maine 



Wash. 



B.C., Canada 



Beaufort Sea 



Calif. 



Calif. 



Calif. 



PECTINIDAE 



Wash. 

 Wash. 



ORDER EULAMELLIBRANCHIA 

 FAMILY OSTREIDAE 



Crassostrea virginica 

 C. virginica 

 Ostrea gigas 

 O. gigas 

 O. lurida 



N. H. 



N. C. 



B.C., Canada 

 B.C., Canada 

 Calif. 



FAMILY SPONDYLIDAE 



Spondylus sp. I unknown 



FAMILY CHAMIDAE 



Chama pellucida Calif. 



FAMILY TELLINIDAE 



Macoma irus Calif. 



M. nasuta Calif. 



M. secta Calif. 



Tellina sp. B.C., Canada 



38-6 



38-6 



37-5 

 37-8 

 38-8 

 37-5 

 37-8 



38 



37 



37 



38 



37 



38 



38 



36 



36 



390 



38-5 



38-2 

 37-8 



33-7 

 37-8 

 34-6 

 36-2 

 38-6 



38 



36-8 



0-636 

 0-636 

 0-680 

 0-687 

 0-626 

 0-664 

 0-608 

 0-709 

 0-606 

 0-680 



0-103 



0196 

 0-103 

 0125 

 0-116 

 0-112 

 0-132 

 0-099 

 0-176 

 110 

 128 

 116 

 106 

 154 

 117 

 118 

 0-086 

 0086 



0111 

 0107 



092 

 0-107 

 0-097 

 0100 

 0-085 



0-128 



0-142 



•4 

 •3 

 •8 

 ■6 

 -1 

 -2 



41' 



41 



41- 



39- 



41' 



41- 



41 



42-2 



41-4 



41-5 



42-6 



38-9 

 41-1 

 41-8 

 42-7 

 41-3 

 4M 

 42-1 

 42-5 

 42-0 

 42-1 

 42-4 

 42-2 

 41-4 

 41-2 

 42-2 

 43-1 

 43-1 



41-8 

 42-1 



42-4 

 41-8 

 37-6 

 42-5 

 42-5 



41-6 



42-3 



3-63 

 3-95 

 3-06 

 3-91 



•83 

 -26 

 -74 

 -31 



4- 



4- 



4- 



3' 



3-88 



4 00 



1-75 



•67 

 10 

 ■97 

 39 

 •58 

 20 

 96 

 10 

 32 

 30 

 52 

 24 

 42 

 53 

 87 

 54 

 70 



1-91 



1-75 



216 

 2-34 

 13-3 

 1-71 

 1-68 



1-67 



2-47 



7-52 

 7-55 

 8-02 

 8-12 

 7-69 

 801 

 7-32 

 8-57 

 7-37 

 8-41 



1-22 



2-32 

 1-25 

 1-52 

 1-37 

 1-37 

 1-60 



119 

 216 

 1-33 

 1-53 

 1-43 

 1-26 

 1-82 

 1-46 

 1-48 

 101 

 102 



1-33 

 1-29 



1-25 

 1-29 

 1-28 

 1-26 

 101 



1-54 



1-76 



