Ein wenig Literatur zum Oligozän von Assam, Nordost-Indien:
G.
Srivastava, R. C.
Mehrotra, New legume fruits from the oligocene sediments of Assam. Journal of the Geological Society of India, June 2010, Vol. 75, Issue 6, pp 820-828.
http://link.springer.com/article/10.1007%2Fs12594-010-0069-x# G. SRIVASTAVA, R. C. MEHROTRA, H. BAUER, Palm leaves from the Late Oligocene sediments of Makum Coalfield, Assam, India. Journal of Earth System Science, June 2012, Vol. 121, Issue 3, pp 747-754.
http://link.springer.com/article/10.1007%2Fs12040-012-0179-5#page-1Srivastava G.,
Mehrotra R.C., First fossil record of Alphonsea Hk. f. & T. (Annonaceae) from the Late Oligocene sediments of Assam, India and comments on its phytogeography. PLoS One. 2013; 8(1): e53177. doi: 10.1371/journal.pone.0053177.
http://www.ncbi.nlm.nih.gov/pubmed/23349701 (abstract)
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3551915/ R. C.
Mehrotra, Two new fossil fruits from Oligocene sediments of Makum Coalfield, Assam, India. CURRENT SCIENCE, Vol. 79, No. 10, 25 Nov. 2000, p. 1482 f.
http://www.iisc.ernet.in/currsci/nov252000/1482.pdf G.
Srivastava, R. A.
Spicer, T. E.V.
Spicer, J.
Yang, M.
Kumar, R.
Mehrotra & N.
Mehrotra, Megaflora and palaeoclimate of a Late Oligocene tropical delta, Makum Coalfield, Assam: Evidence for the early development of the South Asia Monsoon. Palaeogeography, Palaeoclimatology, Palaeoecology 342–343 (2012) 130–142.
cene_tropical_delta_Makum_Coalfield_Assam_Evidence_for_the_ early_development_of_the_South_Asia_Monsoon/file/9fcfd50c01f1399be2.pdf&sa=X&scisig=AAGBfm3l_WDpg78Nh1pn7qFqK8IE3A1YNw&oi=scholarr&ei=N3ndUva7NYiohAfwxIG4Dw&ved=0CC8QgAMoAjAA" class="bbc_link" target="_blank" rel="noopener noreferrer">http://scholar.google.at/scholar_url?hl=de&q=http://www.researchgate.net/publication/233836403_Author's_personal_copy_Megaflora_and_palaeoclimate_of_a_Late_Oligo cene_tropical_delta_Makum_Coalfield_Assam_Evidence_for_the_ early_development_of_the_South_Asia_Monsoon/file/9fcfd50c01f1399be2.pdf&sa=X&scisig=AAGBfm3l_WDpg78Nh1pn7qFqK8IE3A1YNw&oi=scholarr&ei=N3ndUva7NYiohAfwxIG4Dw&ved=0CC8QgAMoAjAA