Palacanthus |
Palacanthus ledanoisii
|
Canada(Ontario) |
Givetian |
|
Stellinium |
Stellinium micropolygonale
|
Canada(Ontario) |
Givetian |
|
Craterisphaeridium |
Craterisphaeridium sprucegrovense
|
China(Sinkiang Uighur) |
Famennian |
|
Gorgonisphaeridium |
Gorgonisphaeridium ohioense
|
China(Sinkiang Uighur) |
Famennian |
|
Arbusculidium |
Arbusculidium destombesii
|
England |
Tremadocian |
|
Arbusculidium |
Arbusculidium frondiferum
|
England |
Early Tremadocian |
|
Cheleutochroa |
Cheleutochroa homoia
|
England |
Caradocian |
|
Cymatiogalea |
Cymatiogalea messaoudii
|
England |
Tremadocian |
|
Fractoricoronula |
Fractoricoronula trirhetica
|
England |
Caradocian |
|
Orthosphaeridium |
Orthosphaeridium chondrodora
|
England |
Caradocian |
|
Peteinosphaeridium |
Peteinosphaeridium trifurcatum
|
England |
Caradocian |
|
Pheoclosterium |
Pheoclosterium fuscinulaegerum
|
England |
Caradocian |
|
Rhopaliophora |
Rhopaliophora palmata
|
England |
Arenigian |
|
Striatotheca |
Striatotheca quieta
|
England |
Caradocian |
|
Vulcanisphaera |
Vulcanisphaera africana
|
England |
Tremadocian |
|
Annulum |
Annulum squamaceum
|
England |
Early Cambrian |
|
Dicrodiacrodium |
Dicrodiacrodium normale
|
England |
Caradocian |
|