TY - CONF T1 - Morphology and ultrastructure of Devonian spores: Samarisporites (Cristatisporites) orcadensis (Richardson) Richardson, 1965 JO - REVIEW OF PALAEOBOTANY AND PALYNOLOGY PY - 2001/08/01 AU - Wellman CH ED - VL - 116 IS - 1-2 SP - 87 EP - 107 Y2 - 2024/12/22 ER -