ammonites

Harland Devonian of Eastern North America

 Interval Maximum correlate   Minimum correlate
Conewango Famennian

= Chautauquan

Conneaut Famennian

= Chautauquan

Canadaway Famennian

= Chautauquan

West Falls Frasnian

= Senecan

Sonyea Frasnian

= Senecan

Genesee Givetian Frasnian

= Senecan

Taghanic Givetian

= Erian/Senecan

Tioughnioga Givetian

= Erian

Cazenovia Eifelian Givetian

= Erian

Southwood Eifelian

= Ulsterian

Sawkill Emsian

= Ulsterian

Deer Park Emsian

= Ulsterian

Helderberg Lochkovian Emsian

= Ulsterian

Authorizer: J. Alroy   Enterer: J. Alroy

Continent: North America   Rank of each interval: age/stage

Basis of scale: paleontological  

Reference: W. B. Harland et al. 1990

View another time scale