Buedingiisphaeridium |
Buedingiisphaeridium microspinosum
|
Nd |
Late Llandoverian |
|
Buedingiisphaeridium |
Buedingiisphaeridium permicum
|
Nd |
Late Permian |
|
Buedingiisphaeridium |
Buedingiisphaeridium pyramidale
|
England(Shropshire) |
Ludlovian |
|
Buedingiisphaeridium |
Buedingiisphaeridium tremadocum
|
Nd |
Tremadocian |
|
Buedingiisphaeridium |
Buedingiisphaeridium triassicum
|
Nd |
Early Triassic |
|
Caddasphaera |
Caddasphaera
|
Nd |
Nd |
|
Caddasphaera |
Caddasphaera halosa
|
Nd |
Bajocian |
|
Caddasphaera |
Caddasphaera treptensis
|
Nd |
Late Oxfordian |
|
Caiacorymbifer |
Caiacorymbifer
|
Nd |
Nd |
|
Caiacorymbifer |
Caiacorymbifer waldronensis
|
Indiana |
Early Wenlockian |
|
Calamotriletes |
Calamotriletes
|
Nd |
Nd |
|
Calamotriletes |
Calamotriletes bulbiferus
|
Nd |
Late Permian |
|
Calamotriletes |
Calamotriletes robustus
|
Nd |
Permian |
|
Caldariola |
Caldariola
|
Nd |
Nd |
|
Caldariola |
Caldariola glabra
|
Nd |
Tremadocian |
|
Calyxiella |
Calyxiella
|
Nd |
Nd |
|
Calyxiella |
Calyxiella izhoriensis
|
Nd |
Late Cambrian |
|