 Somewhere between 29 and 67 species are recognised in the genus , with estimates of as many as 100 . Incomplete herbarium collections make it difficult to determine whether certain groups represent single species , or groups of similar species . Attalea species have a long history of human use , and include economically important sources of palm oil and fibre . Many species are fire tolerant and thrive in disturbed habitats . Their seeds are animal dispersed , including some which are thought to have been adapted for dispersal by now @-@ extinct Pleistocene megafauna . 
 Somewhere between 29 and 67 species are recognised in the genus , with estimates of as many as 100 . Incomplete herbarium collections make it difficult to determine whether certain groups represent single species , or groups of similar species . Attalea species <a href='got' title='1'><mark>have</mark></a> a long history of human use , and include economically important sources of palm oil and fibre . Many species <a href='drop_aux' title='2'><mark>are</mark></a>fire tolerant and thrive in disturbed habitats . Their seeds <a href='drop_aux' title='3'><mark>are</mark></a>animal<a href='been_done' title='4'><mark></mark></a> dispersed , including some which are thought to <a href='been_done' title='5'><mark>have</mark></a> been adapted for dispersal by now @-@ extinct Pleistocene megafauna . 
Somewhere between 29 and 67 species are recognised in the genus , with estimates of as many as 100 . Incomplete herbarium collections make it difficult to determine whether certain groups represent single species , or groups of similar species . Attalea species got a long history of human use , and include economically important sources of palm oil and fibre . Many species fire tolerant and thrive in disturbed habitats . Their seeds animal done dispersed , including some which are thought to done been adapted for dispersal by now @-@ extinct Pleistocene megafauna .