Concepedia

Llandoverian and Wenlockian Cyrtograptus,and some other Wenlockian graptolites from Northern and Arctic Canada

Alfred C. Lenz

Geobios · 1978 · 22 citations · 8 references

DOI

Concepts

References

8

The sequence of Silurian graptolite zones in the British Isles

R. B. Rickards · Geological Journal · 1976 · 117 citations

, , +8

Zonation of Ordovician and Silurian Graptolites of Northern Yukon, Canada

D. E. Jackson · AAPG Bulletin · 1962 · 53 citations

, , +7

Ordovician and Silurian graptolite succession in the Trail Creek area, central Idaho; a graptolite zone reference section

Claire Carter, Michael Churkin · USGS professional paper · 1977 · 36 citations · Full text

, , +6

New Silurian graptolites from the Howgill Fells (northern England)

Biodiversity Heritage Library (Smithsonian Institution) · 1965 · 21 citations · Full text

, , +4

The Mode of Cladial Generation in <i>Cyrtograptus</i>

R Thorsteinsson · Geological Magazine · 1955 · 21 citations

, , +7