Grypania |
Grypania
|
Montana |
Proterozoic |
|
Grypania |
Grypania spiralis
|
Montana |
Proterozoic |
|
Helminthoidichnites |
Helminthoidichnites meekii
|
Montana |
Proterozoic |
|
Helminthoidichnites |
Helminthoidichnites neihartensis
|
Montana |
Proterozoic |
|
Helminthoidichnites |
Helminthoidichnites spiralis
|
Montana |
Proterozoic |
|
Lanceoforma |
Lanceoforma
|
Montana |
Proterozoic |
|
Lanceoforma |
Lanceoforma striata
sp. nov. |
Montana |
Proterozoic |
|
Proterotainia |
Proterotainia
|
Montana |
Proterozoic |
|
Proterotainia |
Proterotainia montana
sp. nov. |
Montana |
Proterozoic |
|
Proterotiania |
Proterotiania neihartensis
|
Montana |
Proterozoic |
|