The strontium-calcium atom ratio in carbonate-secreting marine organisms 



31 



Table I (cont.) 



Organic 

 matter 



/o 



Atom ratio 



^ y 1000 

 Ca 



SUBCLASS ZOANTHARIA, ORDER MADREPORARIA 



Acropora sp. 

 Astrangia sp. 

 Balanophyllia elegans 

 Caryophyllia sp. 

 Meandrina sinuosa 

 PociUopora sp. 

 Porites sp. 



Ifalik Atoll 



Calif. 



Calif. 



Calif. 



Bermuda 



Ifalik Atoll 



Ifalik Atoll 



37-3 

 370 

 32-3 

 37-4 

 36-5 

 37-9 

 37-3 



(E) PHYLUM ANNELIDA, CLASS POLYCHAETA 

 FAMILY CIRRATULIDAE 



Dodecaceria pacifica B.C., Canada* 32-5 



D.fistulicola Calif. 35 4 



FAMILY SERPULIDAE 



Salmacina tribranchiata \ Calif. 



Serpula vermicu/aris B.C., Canada 



S. vermicularis Calif. 



Spirorbis sp. N. H. 



33-2 

 32-4 

 321 

 29-2 



0-810 

 0-868 

 0-666 

 0-850 

 0-802 

 0-735 

 0-790 



0-574 

 0-530 



0-596 

 0-288 

 0-289 

 0-247 



41 

 41 

 37 

 41 

 41 

 41 

 40 



40-6 

 40-3 



36-5 

 40-7 



42-5 

 34-2 



3-85 

 3-43 

 8-84 

 2-90 

 3-25 

 3-13 

 5-38 



5-38 

 5-20 



6-35 

 4-51 

 4-60 

 15-0 



ORDER THORACICA 



Floridaf 



N. H. 



N. H. 



Wash. 



Beaufort Sea 



Florida 



Florida 



Wash. 



Calif. 



Calif. 



Wash. 



Wash. 



B.C., Canada 



Calif. 



N. C. 



Calif. 



Calif. 



370 

 37-6 

 34-1 

 39-1 

 36-1 

 36-7 

 36-6 

 37-0 

 37-4 

 35-6 

 34-2 

 37-4 

 36-1 

 37-2 

 32-4 

 36-8 

 35-6 



0-428 

 0-382 

 0-336 

 0-324 

 0-337 

 0-381 

 0-345 

 0-358 

 0-371 

 0-334 

 0-282 

 0-364 

 0-337 

 0-38! 

 0-328 

 0-344 

 0-381 



41 

 41 

 39 

 42 

 41 

 41 

 41 

 41 

 41 

 39 

 36 

 41 

 41 

 41 

 37 

 40 

 41 



5 

 3 



7 

 1 

 3 

 4 

 2 

 3 

 2 

 7 



12 

 2 



3 

 1 

 8 

 4 

 4 



•00 



•27 



-76 



-80 



-24 



-80 



-39 



-12 



-88 



-18 



-3 



-72 



-80 



-88 



-33 



-48 



-07 



(F) PHYLUM ARTHROPODA, SUBPHYLUM MANDIBULATA, SUPERCLASS 

 CRUSTACEA 

 CLASS CIRRIPEDIA, 



Balanus amphitrite 



B. balanoides 



B. balanoides 



B. cariosus 



B. crenatus 



B. eburneus 



B. eburneus 



B. glandula 



B. glandula 



B. nubilis 



B. nubilis 



Balanus sp. 



Balanus sp. 



B. tintinnabulum 



Chthamalus fragilis 



Mitella polymerus 



Tetraclita squamosa 



9-92 

 10-7 



9-41 

 10-4 

 10-1 



8-85 



9-67 



8-07 

 6-84 



8-24 

 4-06 

 4-12 

 3-86 



5-28 

 4-64 



CLASS MALACOSTRACA, SUBCLASS EUCARIDA, ORDER 



Cancer antennarius 

 C. antennariust 

 C. borealis 

 C. magister 

 C. productus 

 C. productus ** 

 Hemigrapsus nudus 

 Pugettia producta 



Calif. 



Calif. 



N. H. 



Wash. 



Calif. 



Calif. 



Wash. 



Calif. 



(G) PHYLUM MOLLUSCA 



CLASS AMPHINEURA, ORDER PO 



27-2 

 28-0 

 24 

 24-0 

 23-3 

 0-44 

 26-0 

 21-2 



0-363 

 0-371 

 0-322 

 0-351 

 0-308 

 trace 

 0-349 

 0-278 



30-2 

 32-5 

 29 3 

 281 

 30-2 

 8-6 

 29-3 

 25-7 



I 



DECAPODA 



32-7 

 20 

 27-2 

 28-1 

 30-0 

 85-5 

 28-7 

 33-3 



LYPLACOPHORA 



Cryptochiton stelleri 

 C. stelleri 



Cyanoplax hartwegii 

 Nuttallina californica 

 Tonicella lineata 



Calif. 



Wash. 



Calif. 



Calif. 



Calif. 



38-2 

 37-1 

 38-3 

 38-2 

 37-6 



0-736 

 0-751 

 0-716 

 0-662 

 0-640 



40-3 

 41-4 

 41-3 

 41 2 

 41 4 



6-10 

 3-66 

 5-70 

 4-69 

 4-83 



50 



78 

 27 

 74 

 32 

 42 

 53 

 29 

 3-77 

 4-45 

 4-27 

 4-67 

 4-62 

 4-27 

 4-88 



612 

 6 05 

 613 

 669 

 604 



6-13 

 600 



8-80 



9-25 

 8-55 

 7-91 



7-79 



* The specimens from British Columbia were provided by Mr. Cyril Berkeley of the Pacihc 



Biological Station. /^ c v 



t The Florida specimens were provided by Mr. C. b. Yent.sch. 

 t Claw ** Moulting 



