TY - JOUR T1 - Morphology and wall ultrastructure of the megaspore Lagenicula (Triletes) variabilis (Window, 1962) Arioli et al. (2004) from the Lower Carboniferous of Ohio, USA JO - REV PALAEOBOT PALYNO PY - 2007/05/01 AU - Arioli C AU - Wellman CH AU - Lugardon B AU - Servais T ED - DO - DOI: 10.1016/j.revpalbo.2006.07.011 VL - 144 IS - 3-4 SP - 231 EP - 248 Y2 - 2024/12/22 ER -