NO. 5 TERTIARY ECHINOIDS FROM FLORIDA — ICIER 



TAMIAMI 



CALOOSAHATCHEE 



Lytechinus variegatus plurituberculatus 



RECENT 



Lytechinus 

 variegatus 

 variegatus 



Clypeaster subdepressus 



nfliiiiirii 



Clypeaster crassus 



Clypeaster rosoceus dalli 



Encope michelini imperforata 



Rh yncholornpas ayres[ 

 MMHBBBHBMHB I 



Clypeaster 

 prostratus 



Clypeaster 



rosaceus 



rosaceus 



Encope 

 michelini 

 michelini 



Fig. 1. — Suggested lineages of some of the species. 



