| details |
Late Westphalian B |
Westphalian C |
England |
Balme,B.E. et al. The stratigraphical significance of certain fossil spores in the central group of British coalfields. |
1952 |
| original |
Westphalian B |
Westphalian C |
England(Somerset) |
Balme,B.E. On some spore specimens from British Upper Carboniferous Coals. |
1952 |
| details |
Late Carboniferous |
|
England(Staffordshire) |
Butterworth,M.A. et al. Microspore distribution in the Seams of the North Staffofdshire, Cannock Chase and North Wales Coalfields |
1954 |
| details |
Late Carboniferous |
|
Wales |
Butterworth,M.A. et al. Microspore distribution in the Seams of the North Staffofdshire, Cannock Chase and North Wales Coalfields |
1954 |
| details |
Early Westphalian D |
|
Germany(Rhineland) |
Bharadwaj,D.C. The spore flora of Velener Schichten (Lower Westphalian D) in the Ruhr Coal Measures. |
1957 |
| details |
Westphalian B |
Westphalian C |
England(Somerset) |
Bharadwaj,D.C. The spore flora of Velener Schichten (Lower Westphalian D) in the Ruhr Coal Measures. |
1957 |
| details |
Westphalian B |
Westphalian C |
England(Somerset) |
Butterworth,M.A. et al. The small spore floras of coals in the Limestone Coal Group and Upper Limestone Group of the Lower Carboniferous of Scotland |
1958 |
| details |
Nd |
|
Nd |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 3 |
1960 |