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OINSBURG, LLOYD, STOCKMAN AND MCCALLUM 



[chap. 22 



Fig. 4. 



A. Underwater view of massive corals. Left, Montastrea annularis; center, Diploria 

 strigosa{'i); right, D. labyrinthiformis. (Florida reef tract photographs by Eugene Shinn.) 



B. Specimen oi Halimeda sand from Florida reef tract. 



C. Fragments of rovmded molliiscan shells from north Miami Beach, east coast of 

 Florida. 



D. A skeletal sediment that consists of the fragments of branched forms, Porites 

 divaricata and Goniolithon strictum. Rodriguez Key, Florida. 



E. A skeletal beach sand from Nest Key, Florida Bay, that consists of thin-shelled 

 mollusks and Foraminifera. 



3. Skeletal Particles in Sediments 



The grouping of organisms on the basis of skeletal form, and what might be 

 termed the architecture of skeletons, can help us to evaluate the nature of the 

 environment of deposition of sedimentary particles and to understand their 



