Staurocephalites |
Staurocephalites taugourdeausi
|
Europe |
Quaternary |
|
Staurocephalites |
Staurocephalites triplus
|
North America |
Middle Ordovician |
|
Staurocephalites |
Staurocephalites truncatus
|
Nd |
Nd |
|
Stauronereisites |
Stauronereisites abditivus
|
North America |
Late Devonian |
|
Stauronereisites |
Stauronereisites adversarius
|
North America |
Late Devonian |
|
Stauronereisites |
Stauronereisites aequalis
|
North America |
Late Devonian |
|
Stauronereisites |
Stauronereisites auriculatus
|
North America |
Late Devonian |
|
Symmetroprion |
Symmetroprion reduplicatus
|
Europe |
Middle Gothlandian |
Late Gothlandian |
Synclinophora |
Synclinophora synclinalis
|
Europe |
Nd |
|
Tetraprion |
Tetraprion pozaryskae
|
Europe |
Middle Ordovician |
|
Thalenessites |
Thalenessites lobatus
|
North America |
Middle Ordovician |
|
Trianguligenys |
Trianguligenys lacinata
|
North America |
Late Devonian |
|
Trinaguligenys |
Trinaguligenys lacinatus
|
Europe |
Late Devonian |
|
Uncinogenys |
Uncinogenys uncinatus
|
Europe |
Late Devonian |
|
Ungulites |
Ungulites aculeatus
|
North America |
Middle Ordovician |
|
Ungulites |
Ungulites acutidactylus
|
North America |
Late Devonian |
|
Ungulites |
Ungulites agglomeratus
|
North America |
Late Devonian |
|