COROCORO COPPER DISTRICT OF BOLIVIA 113 



i 



stone of Carpolithus baulti was described by Engelhardt 

 from the tuffs at Potosi, Bolivia, as Carpolites ovoideus 

 (i). It is possible that the two represent the same species 

 which would add another to the considerable number of 

 identical species at these remote localities (2) thus indicat- 

 ing that the environmental conditions indicated by these 

 fossil plants were uniform over much of Bolivia during 

 this stage of the Pliocene. . There are numerous palm 

 fruits similar to the fossil and similar forms are often 

 referred to the palmaceous form genus Palmocarpon. 

 Were there any collateral evidence of palms in the Pliocene 

 flora of Corocoro I would be inclined to have called the 

 present fossil Palmocarpon. As the matter stands the two 

 most probable alternatives seem to be a relationship to 

 either the Palms, the Sapotacese or the Myrsinacese. 



Engelhardt, H., Sitz. Naturw. Gesell. Isis in Dresden, 1894, 

 Abh. i, p. 13, pi. i, fig. 58. 



2 See Berry, E. W., Proc. U. S. Natl. M.us., vol. 54, p. 162, pi. 18, 

 fig 7, 1918, where Engelhardt's preoccupied name is changed to 

 Carpolithus Engelhardti, and where it is suggested that the species 

 represents some leguminous seed. This certainly seems to be true 

 of the specimens that I described from Potosi, but these were deter- 

 mined on the basis of Engelhardt's figure of the single type specimen 

 and a very inadequate description, so that all chances of error are 

 not obviated. 



