122 



FOSSIL ECHINI OF THE WEST INDIES. 



POST-MIOCENE ECHINOIDS. 



The following table gives the West Indian species of echinoids that 

 are of Pliocene or younger age and of unknown geologic age younger 

 than Miocene: 



List of \Vest Indian post-Miocene Fossil Echinoids. 



Horizon and names. 



Localities, etc. 



Pliocene or younger age: 



Clypeaster dalli (Twitchell) 



Echinoneus orbicularis Desor 



Hemiaster cubensis (d'Orbigny) . . 

 Geologic horizon unknown: 



Clypeaster duchassaingi Michelin. 

 ambigenus (Lamarck) 



meridanensis Michelin 

 Brissus brissus (Leske) 



Gato, Dominican Republic. (Also Caloosa- 



hatchee marl.) 

 Cuba (Recent). 

 Cuba (Pliocene or Recent). 



Guadeloupe ("Formation madreporique"). 

 Guadeloupe ("Formations moderne et ma- 

 dreporique"). 



Yucatan and Guadeloupe (probably Pliocene). 

 Cuba and Guadeloupe (Pliocene). 



SPECIES OF ESTABLISHED STRATIGRAPHIC VALUE. 



From preceding tables and discussion, the table of species (page 121) 

 of ascertained stratigraphic value has been constructed. 



Eupatagus abruptus (Gregory) from the Bissex Hill formation of 

 Barbados is an Oligocene species, but whether it comes from the 

 Antiguan or Anguillan horizon is not known. 



