Lexicon
Intervals
Macrostrat
Search
Erismodus quadridactylus
556
Type
Zone
Age range
455.8–454.7
Ma
International Timescale
Late Ordovician
Sandbian
Conodont Zonation
Belodina compressa
Erismodus quadridactylus
Plectodina aculeata
455.8
455.8
455.7
455.6
455.6
455.6
455.5
455.4
455.4
455.4
455.3
455.3
455.2
455.1
455.1
455.1
455.0
454.9
454.9
454.9
454.8
454.8
454.7
Details and map
View on map
View in Sift