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Trachysphaeridium
Genus Trachysphaeridium
Species total:
122
Age range:
4100 - 54.5 MA (obsolete dating)
IRMNG:
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Name
From
To
Age range
Trachysphaeridium sp.2 Ouya.et al,1974
Late Proterozoic
Cambrian
Trachysphaeridium kryshtofovichii
Late Proterozoic
Cambrian
Trachysphaeridium maicum
Riphean
Riphean
Trachysphaeridium sp.1 Ouya.et al,1974
Late Proterozoic
Cambrian
Trachysphaeridium sp.3 Ouya.et al,1974
Late Proterozoic
Cambrian
Trachysphaeridium sp. Ouya.et al,1974
Late Proterozoic
Cambrian
Trachysphaeridium lachandinum
Riphean
Riphean
Trachysphaeridium myctum
Late Proterozoic
Cambrian
Trachysphaeridium gibbosum
Late Proterozoic
Cambrian
Trachysphaeridium sp. Reit.& Holl,1988
Riphean
Early Vendian
Trachysphaeridium nevelense
Late Proterozoic
Cambrian
Trachysphaeridium ruminatum
Late Precambrian
Early Cambrian
Trachysphaeridium magnum
Late Precambrian
Late Precambrian
Trachysphaeridium sp. Kuma.& Sriv.,1995
Late Precambrian
Late Precambrian
Trachysphaeridium mediale
Late Precambrian
Cambrian
Trachysphaeridium sp.B
Late Precambrian
Early Cambrian
Trachysphaeridium favosum
Late Precambrian
Late Precambrian