''Climacograptus'' is an Ordovician to

Silurian The Silurian ( ) is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at million years ago ( Mya), to the beginning of the Devonian Period, Mya. The Silurian is the shortest period of the Paleozo ...

genus of graptolites.

References

Graptolite genera Ordovician animals of North America Silurian animals of North America Paleozoic life of Ontario Bertie Formation Paleozoic life of New Brunswick Paleozoic life of Newfoundland and Labrador Paleozoic life of the Northwest Territories Paleozoic life of Nunavut Paleozoic life of Quebec Paleozoic life of Yukon Ordovician animals of Asia Paleozoic Malaysia Fossils of Malaysia Fossil taxa described in 1974 {{cambrian-animal-stub