The structure and rate of late Miocene expansion of C-4 plants: Evidence from lateral variation in stable isotopes in paleosols of the Siwalik Group, northern Pakistan
Behrensmeyer, Anna K., Quade, Jay, Cerling, Thure E., Kappelman, John, Khan, Imran A., Copeland, Peter, Roe, Lois, Hicks, Jason, Stubblefield, Phoebe, Willis, Brian J., and Latorre, Claudio. 2007. "The structure and rate of late Miocene expansion of C-4 plants: Evidence from lateral variation in stable isotopes in paleosols of the Siwalik Group, northern Pakistan." Geological Society of America Bulletin, 119, (11-12) 1486–1505. https://doi.org/10.1130/B26064.1.