TY - JOUR T1 - Pennsylvanian (mid-Bolsovian to Asturian) megaspores and large pollen of the Bristol Coalfield, UK JO - JOURNAL OF MICROPALAEONTOLOGY PY - 2013/01/01 AU - Pendleton JL AU - Wellman CH ED - DO - DOI: 10.1144/jmpaleo2012-001 VL - 32 SP - 87 EP - 106 Y2 - 2025/05/20 ER -