Tretosohyrtana |
Tretosohyrtana
|
Nd |
Nd |
|
Tretosohyrtana |
Tretosohyrtana impexa
|
Nd |
Caradocian |
|
Tretosohyrtana |
Tretosohyrtana korma
|
Nd |
Late Ordovician |
|
Triangulina |
Triangulina
|
Nd |
Nd |
|
Triangulina |
Triangulina alargada
|
Nd |
Emsian |
|
Triangulina |
Triangulina aspera
|
Nd |
Emsian |
|
Triangulina |
Triangulina sanpetrensis
|
Spain |
Ludlovian |
Early Gedinnian |
Triangumorpha |
Triangumorpha
|
Nd |
Nd |
|
Triangumorpha |
Triangumorpha gigantea
|
Nd |
Sinian |
|
Triangumorpha |
Triangumorpha minor
|
Nd |
Sinian |
|
Triangumorpha |
Triangumorpha minuta
|
Nd |
Early Sinian |
|
Triangumorpha |
Triangumorpha prima
|
Nd |
Middle Precambrian |
|
Triangumorpha |
Triangumorpha striata
|
Nd |
Middle Sinian |
|
Triangumorpha |
Triangumorpha yunnanensis
|
Nd |
Nd |
|
Tricholigotriletum |
Tricholigotriletum
|
Nd |
Nd |
|
Tricholigotriletum |
Tricholigotriletum glauconiticum
|
Nd |
Early Ordovician |
|
Tricholigotriletum |
Tricholigotriletum hirtum
|
Nd |
Middle Cambrian |
|