NO. 5 TERTIARY ECHINOIDS FROM FLORIDA — KIER 7 



p. 579) or littoral-sublittoral zone (Mortensen, 1948, p. 17). Two 

 of the three extinct nonclypeasteroids, Rhyncholampas evergladensis 

 and Echinocardium gothicum ?, belong to genera which occur today 

 in both shallow and deep water. The third species, Arbacia crenu- 

 lata, is a member of a genus that almost always is littoral. 



FLORIDA LOCALITIES (FIG. 2) 



UNNAMED POST-CALOOSAHATCHEE PRE-FORT THOMPSON UNIT 



According to Druid Wilson (1962, personal communication), this 

 unnamed unit contains the beds referred by Mansfield (1939, p. 34) 

 to the upper Pliocene; DuBar's unit 6 (1958, p. 80) at Ortona 

 Lock, and DuBar's unit F (1962), p. 14) at Shell Creek, which, he 

 observed, contained a molluscan fauna considerably different from 

 the underlying Caloosahatchee bed. Both units are included by DuBar 

 in the Caloosahatchee formation. 



Locality No. U.S.GS. No. Description 



1 22704 Float from road metal pit on south side of 



Florida route 80 southwest of town of Belle 

 Glade, Palm Beach County. 



CALOOSAHATCHEE FORMATION (BEE BRANCH MEMBER OF DUBAR IN 

 CALOOSAHATCHEE RIVER AREA). 



2 23082 Float from north bank of Caloosahatchee River 



and from road metal ("La Belle") pits on 

 north bank in SE \ sec. 12, T. 43 S., R. 28 E., 

 Sears quad., Hendry County. 



3 23083 Outcrops along north bank of Caloosahatchee 



River and in road metal ("La Belle") pits on 

 north bank in SE \ sec. 12, T. 43 S., R. 28 E., 

 Sears quad., Hendry County. 



4 23085 Float from north bank of Caloosahatchee River 



west of Three Way Rock Co. pits, in SW \ 

 sec. 6, T. 43 S., R. 29 E., La Belle quad., 

 Hendry County. 



5 23084 Float from Three Way Rock Co. pits on north 



bank of Caloosahatchee River in SW i sec. 6, 

 T. 43 S., R. 29 E., La Belle quad., Hendry 

 County. 



6 22373 Float in Denaud pits, in NW i sec. 14, T. 43 S., 



R. 28 E., Sears quad., Hendry County. 



7 22387 Caloosahatchee Canal (south bank), 1 mile 



east of bridge at La Belle, Hendry County. 



8 22914 2-3 feet of outcrop above 5 feet (approx.) 



greenish-gray clay in west bank of canal in 

 SE i sec. 18 and NE \ sec. 19 (over distance 

 of approx. 0.3 mi.), T. 40 S., R. 22 E., 

 El Jobean quad., float and in place. 



