135 



logical interpretation, especially the deeper environments. These criteria 

 may be useful in interpreting the environments of deposition of ancient 

 basins and continental slopes. The living assemblages found both in the 

 shallow and deeper waters closely resemble those found in Tertiary deposits 

 around the Gulf of California, in Central America and in the Caribbean 

 region. The use of computer filing and analysis as used in this investigation 

 may facilitate the interpretation of modern as well as ancient environments. 



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