@article{article55e92038,
title   = {Lycopodiopsis derbyi Renault from the Corumbataí Formation in the state of São Paulo (Guadalupian of Paraná Basin, Southern Brazil): new data from compressed silicified stems},
author = {Faria, Rafael Souza de and Ricardi-Branco, Frésia and Giannini, Paulo César Fonseca and Sawakuchi, André Oliveira and Del-Bem, Luiz-Eduardo},
year = {2009},
doi = {10.1016/j.revpalbo.2009.08.005},
journal   = {Review of Palaeobotany and Palynology}
}