Helletheca conica
- Citations total:
- 1
| link
|
From
|
To
|
Geolocation
|
Author - title
|
Year
|
|---|---|---|---|---|---|
| details | Late Carboniferous | England(Staffordshire) | Kurmann,M.H. et al. The ultrastructure of Boulaya fertilis (Medullosales) pollen. | 1984 |