Densosporites |
Densosporites variomarginatus
|
Alaska |
Late Tournaisian |
Visean |
Diatomozonotriletes |
Diatomozonotriletes hughesii
|
Alaska |
Middle Visean |
|
Diatomozonotriletes |
Diatomozonotriletes saetosus
|
Alaska |
Middle Visean |
Late Visean |
Diatomozonotriletes |
Diatomozonotriletes trilinearis
|
Alaska |
Middle Visean |
Late Visean |
Dibolisporites |
Dibolisporites acritarchus
|
Alaska |
Middle Visean |
Late Visean |
Dibolisporites |
Dibolisporites distinctus
|
Alaska |
Late Tournaisian |
Early Visean |
Didymosporites |
Didymosporites scottii
|
Alaska |
Late Visean |
|
Discernisporites |
Discernisporites irregularis
|
Alaska |
Middle Visean |
Late Visean |
Spelaeotriletes |
Spelaeotriletes tuberosus
|
Alaska |
Middle Visean |
Late Visean |
Discernisporites |
Discernisporites macromanifestus
|
Alaska |
Late Tournaisian |
Middle Visean |
Discernisporites |
Discernisporites micromanifestus
|
Alaska |
Late Tournaisian |
Visean |
Discernisporites |
Discernisporites sullivanii
|
Alaska |
Late Visean |
|
Echinatisporis |
Echinatisporis echinatus
|
Alaska |
Middle Visean |
Late Visean |
Foveosporites |
Foveosporites gracilifoveatus
sp. nov. |
Alaska |
Middle Visean |
|
Microreticulatisporites |
Microreticulatisporites concavus
|
Alaska |
Middle Visean |
|
Foveosporites |
Foveosporites hortonensis
|
Alaska |
Late Tournaisian |
Visean |
Foveosporites |
Foveosporites insculptus
|
Alaska |
Late Tournaisian |
Middle Visean |