@ARTICLE{
author={Korn Dieter,Titus Alan L,Ebbighausen Volker,Mapes Royal H,Sudar Milan N},
year={2012},
title={Early Carboniferous (Mississippian) ammonoid biogeography},
journal={GEOBIOS},
volume={45},
number={1},
pages={67-77},
document_type={Article},
}