Baltisphaeridium |
Baltisphaeridium inusitatum
|
Nd |
Kimmeridgian |
|
Baltisphaeridium |
Baltisphaeridium micropunctatum
|
Nd |
Pliensbachian |
Toarcian |
Belodinium |
Belodinium dysculum
|
Nd |
Oxfordian |
Portlandian |
Biorbifera |
Biorbifera johnewingii
|
Nd |
Portlandian |
Cretaceous |
Broomea |
Broomea ramosa
|
Nd |
Kimmeridgian |
Portlandian |
Broomea |
Broomea simplex
|
Nd |
Kimmeridgian |
Portlandian |
Canningia |
Canningia reticulata
|
Nd |
Kimmeridgian |
Portlandian |
Chytroeisphaeridia |
Chytroeisphaeridia chytroeides
|
Nd |
Bathonian |
Kimmeridgian |
Chytroeisphaeridia |
Chytroeisphaeridia dictydia
|
Nd |
Bathonian |
Callovian |
Chytroeisphaeridia |
Chytroeisphaeridia hyalina
|
Nd |
Kimmeridgian |
|
Chytroeisphaeridia |
Chytroeisphaeridia mantellii
|
Nd |
Kimmeridgian |
|
Chytroeisphaeridia |
Chytroeisphaeridia pocockii
|
Nd |
Bathonian |
Kimmeridgian |
Cleistosphaeridium |
Cleistosphaeridium ehrenbergii
|
Nd |
Bathonian |
Kimmeridgian |
Cleistosphaeridium |
Cleistosphaeridium lumectum
|
Nd |
Oxfordian |
|
Cleistosphaeridium |
Cleistosphaeridium polyacanthum
|
Nd |
Kimmeridgian |
|
Cleistosphaeridium |
Cleistosphaeridium polytrichum
|
Nd |
Bathonian |
Kimmeridgian |
Cleistosphaeridium |
Cleistosphaeridium tribuliferum
|
Nd |
Callovian |
Kimmeridgian |