this paper the two units are combined as the Miami Limestone, a formational name 
which now seems more appropriate than the Miami Oolite. The bryozoan facies, the 
dominant constituents of which are massive compound colonies of the cheilostome 
bryozoan Schizoporella floridana Osburn surrounded by ooids and pellets, covers the 
greater part of Dade County and extends in places into adjoining counties, a total area 
of about 2000 square miles. It averages 10 ft in thickness in southeastern Florida and 
thins to 1 ft or so westward to the Gulf of Mexico. It is the surface rock of the 
southern Everglades and is one of the most extensive bryozoan limestones in the 
country. In southeastern Florida, it is covered by an elongated mound of crossbedded 
oolitic limestone, the upper unit or oolitic facies. This is the rock of the southern end of 
the Atlantic Coastal Ridge, with a maximum thickness of 35 ft under the Ridge summit 
thinning westward toward the low-lying Everglades as it encroaches over the bryozoan 
fancies. Interest in the origin of the two units has been heightened recently by the 
recognition of similar deposits that are being actively produced in a nearby area. 
Immediately east of Miami on the western edge of the Great Bahama Bank, strung in a 
north south line, are the islands of Bimini, Cat Cay, Sandy Cay, etc., the region 
described by Newell and others. East of the Cays and parallel to them, large underwater 
mound of unstable oolite is forming, and east of the mound in the shallow lagoon 
massive, tubular bryozoans (Schizoporella floridana Osburn) are growing. The oolite 
from the mound is slowly encroaching over the bryozoan beds. The bathymetric and 
ecologic conditions now extant in this area are probably similar to those which existed 
during the Pleistocene to form the units of the Miami Limestone. The eastern slope of 
the unstable oolite mound of the Cat Cay and Sandy Cay area is cut by tidal channels 
which run normal to the direction of the mound itself. Narrow valleys, similar to these 
channels, can be found in the indurated rock of the oolitic facies of the Atlantic Coastal 
Ridge. The valleys probably had their origin as channels produced by tidal currents at 
the time the oolite mound of the Ridge was in an unstable condition. It is also believed 
that the shape and orientation of the Lower Keys of Florida originated in a similar 
fashion. 
1967 
Idyll, C. P., and M. Roessler (1968) Relation of variations in abundance of juvenile pink 
shrimp emigrating from the Everglades National Park estuary to the commercial catch. 
Circ. No. 268. Bureau of Commercial Fisheries, US Fish and Wildlife Service, Galveston, 
TX. 11-2. 
This citation describes variations in abundance of juvenile pink shrimp emigrating from 
the Everglades National Park to the commercial catch. 
1967 
Idyll, C. P., and M. Roeslerr (1968) Seasonal changes in relative abundance of postlarvae of 
pink shrimp entering the Everglades estuary. Circ. No. 268. Bureau of Commercial 
Fisheries, US Fish and Wildlife Service, Galveston, TX. 12. 
This citation describes seasonal changes in relative abundance of postlarvae of pink 
shrimp entering the Everglades estuary during 1967. 
1967 0 
Muller, G., and J. Muller (1967) Mineralogisch-Sedimentpetrographische Und Chemische 
Unterschungen An Einem Bank-Sediment (Cross-Bank) der Florida Bay, U.S.A. N. jb. Miner. 
Abh. 106(3):257-86. 
(NO COPY OF PAPER AVAILABLE. ABSTRACT FROM SCHMIDT (1991).] The sediments of 
a core of 1.6 m in length taken on the windward side of Cross Bank, Florida Bay, are 
divided into two portions, as shown by grain size analysis. A description of each 
portion is given, along with sediment composition based on changing grain size. Based on 
a thin layer of sand, a catastrophic event is indicated in the Florida Bay region. 
184 
