Table 5.--Ecological data for benthic foraminiferal genera identified in coreholes W-18069, W-18070, W-18071, W-18074, and W-18075.
Genus	Depth* (m)	Environment
Ammonia	0-50	Brackish and hypersaline lagoons, inner shelf
Amphistegina	0-130	Coral reefs, lagoons
Bigenerina		Shelf
Bulimina		Inner shelf to bathyal
Buliminella		Mainly shelf, but also lagoons and upper bathyal
Cancris	50-150	Inner shelf
Cibicides	0->2000	Lagoons to bathyal
Cibicidoides		Shelf to bathyal
Discorbis	0-50	Shelf
Elphidiumt	0-50	Brackish to hypersaline marshes, lagoons, inner shelf
Fursenkoina	0-1200	Lagoons to upper bathyal
Hanzawaia		Inner shelf
Homotrema		Marine; inner shelf
Nonion	0-180	Shelf
Planulina		Shelf, bathyal
Quinqueloculina		Hypersaline lagoons, marine shelf
Rosalina	0-100	Lagoon, inner shelf
Spirolina	0-60	Lagoons and nearshore
Spiroloculina	0-40	Lagoons, inner shelf
Triloculina		Mainly hypersaline lagoons or marine inner shelf
* Depth reported below ground level. t Poag (1981) states that Elphidium is abundant and widespread in coastal lagoons, bays, and estuaries.