| details |
Late Albian |
|
Kansas |
Ward,J.V. Early Cretaceous angiosperm pollen from the Cheyenne and Kiowa Formations, (Albian) of Kansas, USA. |
1986 |
| details |
Albian |
|
USA(Atlantic Coast.Pl.) |
Ward,J.V. et al. A comparison of Aptian-Albian Tricolpate pollen from Southern Laurasia and northern Gondwana |
1986 |
| details |
Albian |
|
Oklahoma |
Ward,J.V. Early Cretaceous angiosperm pollen from the Cheyenne and Kiowa Formations, (Albian) of Kansas, USA. |
1986 |
| details |
Albian |
|
North America |
Lupia,R. Discordant morphological disparity and taxonomic diversity during the Cretaceous angiosperm radiation: North American pollen record. |
1999 |