It is believed that the Citronelle sediments were deposited as coalescing deltas by several rivers that emptied into the Gulf of Mexico ( MacNeil, 1950 ).
(the Citronelle sediments; as coalescing; deltas; by several rivers) (several rivers; emptied; into the Gulf of Mexico)
the Citronelle sediments several rivers
as coalescing emptied
deltas by several rivers
into the Gulf of Mexico