Tylotopalla |
Tylotopalla digitifera
|
New York |
Late Llandoverian |
|
Tylotopalla |
Tylotopalla gordonense
|
Spain |
Ludlovian |
Early Emsian |
Tylotopalla |
Tylotopalla gordonense
|
Kentucky |
Late Llandoverian |
|
Tylotopalla |
Tylotopalla gordonense
|
Algeria |
Gedinnian |
|
Tylotopalla |
Tylotopalla gordonense
|
Africa(Sahara) |
Ludlovian |
Gedinnian |
Tylotopalla |
Tylotopalla guapa
|
Spain |
Late Siegenian |
Early Emsian |
Tylotopalla |
Tylotopalla robustispinosa
|
England |
Wenlockian |
|
Tylotopalla |
Tylotopalla robustispinosa
|
England |
Early Ludlovian |
|
Tylotopalla |
Tylotopalla traumatica
|
Spain |
Ludlovian |
|
Tylotopalla |
Tylotopalla traumatica
|
Florida |
Wenlockian |
Early Gedinnian |
Veryhachium |
Veryhachium asturiae
|
Nd |
Nd |
|
Veryhachium |
Veryhachium cazurrum
|
Spain |
Emsian |
|
Veryhachium |
Veryhachium crucistellatum
|
Nd |
Nd |
|
Veryhachium |
Veryhachium exasperatum
|
Nd |
Nd |
|
Veryhachium |
Veryhachium furcillatum
|
Nd |
Nd |
|
Veryhachium |
Veryhachium josefae
|
Nd |
Nd |
|
Veryhachium |
Veryhachium mucronatum
|
Nd |
Nd |
|