One of the most emblematic animals of the Ordovician Radiation is the largely extinct graptolite. Graptolites spread successfully throughout the world's seas.

A microscope image of a colony of Styracograptus tubuliferus, an ancient, deep-water graptolite that belonged to a lineage of graptolites that later disappeared during the end-Ordovician mass ...

How long did the Ordovician period last, and what caused the Ordovician mass extinction to wipe out 85 percent of life on earth 445 million years ago?

Graptolites are the most important index fossils in these metamorphic rocks. Continuous Ordovician sections in Yongxin and Chongyi Counties, south Jiangxi, are widely regarded as type sections for ...

THE discovery of graptolites near the village of Harpatnar in the Anantnag District of Kashmir 1 was of considerable interest to geologists studying the history of the Himalayas, because the ...

Graptolites show us how unpredictable the Silurian period really could be. What graptolites tell us is a story of incredible changes in the ocean, of periods where the oceans became poisonous and ...

Our research at the State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, has shown, based on a refined division and correlation of the ...

The Liexi Fauna was discovered in the Madaoyu Formation of the Lower Ordovician. The conodont and graptolite assemblages indicate a mid-Florian, Early Ordovician age, making it slightly younger ...

When the world-girdling ice came at the end of the Ordovician period roughly 440 million years ago, only a few species of graptolite survived the mass extinction. Graptolites, whose name means ...

The struggle to adapt to prehistoric climate change may hold lessons for today’s world, UB and Canisius researchers say.