Hemisphaerium |
Hemisphaerium singrauliense
|
Nd |
Early Gondwana |
|
Hercyniana |
Hercyniana
|
Nd |
Nd |
|
Hercyniana |
Hercyniana meissneri
|
Nd |
Late Devonian |
|
Hercyniana |
Hercyniana sprucegrovensis
|
Nd |
Late Devonian |
|
Hercyniana |
Hercyniana sprucegrovensis
|
Belgium |
Early Famennian |
|
Hercyniana |
Hercyniana sprucegrovensis
|
Nd |
Late Devonian |
|
Heteromorphidion |
Heteromorphidion
|
Nd |
Nd |
|
Heteromorphidion |
Heteromorphidion echinopillum
|
Nd |
Late Gedinnian |
|
Hexagonifera |
Hexagonifera
|
Nd |
Nd |
|
Hexagonifera |
Hexagonifera cylindrica
|
Nd |
Albian |
Cenomanian |
Hidasia |
Hidasia
|
Nd |
Nd |
|
Hidasia |
Hidasia diugana
|
Nd |
Middle Miocene |
|
Hidasia |
Hidasia diugana
|
Nd |
Middle Miocene |
|
Hidasia |
Hidasia diugana
|
Nd |
Miocene |
|
Hidasia |
Hidasia flexibilis
|
Nd |
Miocene |
|
Hidasia |
Hidasia racemosa
|
Nd |
Tortonian |
|
Hidasia |
Hidasia rugosa
|
Nd |
Tortonian |
|