Mochtyella |
Mochtyella trapezoidea
|
Europe |
Middle Gothlandian |
Late Gothlandian |
Monothrites |
Monothrites acutus
|
Europe |
Late Ordovician |
|
Multiprion |
Multiprion opolensis
|
Europe |
Middle Devonian |
|
Nereidavus |
Nereidavus admixtus
|
North America |
Late Devonian |
|
Nereidavus |
Nereidavus alatus
|
North America |
Middle Ordovician |
|
Nereidavus |
Nereidavus angulatus
|
North America |
Late Devonian |
|
Nereidavus |
Nereidavus angulosus
|
North America |
Middle Ordovician |
|
Nereidavus |
Nereidavus antiquus
|
Europe |
Middle Gothlandian |
|
Nereidavus |
Nereidavus artatus
|
North America |
Middle Ordovician |
|
Nereidavus |
Nereidavus avinoffi
|
North America |
Middle Ordovician |
|
Nereidavus |
Nereidavus calcifera
|
Africa(Sahara) |
Middle Gothlandian |
Middle Devonian |
Nereidavus |
Nereidavus canandiaguaensis
|
Nd |
Nd |
|
Nereidavus |
Nereidavus compressus
|
Nd |
Nd |
|
Nereidavus |
Nereidavus curtidentatus
|
North America |
Middle Devonian |
|
Nereidavus |
Nereidavus decoctus
|
North America |
Late Devonian |
|
Nereidavus |
Nereidavus difficulis
|
North America |
Late Devonian |
|
Nereidavus |
Nereidavus digitus
|
North America |
Late Devonian |
|