Genus Problematica

Species total:
6
Age range:
408.33 - 0 MA (obsolete dating)
IRMNG:
find
Name From To Age range
Problematica Paleocene Paleocene
Problematica assereto Late Rhaetian Late Rhaetian
Problematica sp Late Emsian Late Emsian
Problematica sp.5a Late Gothlandian Late Gothlandian
Problematica sp.A Permian Permian
Problematica sp.B Permian Permian