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Clonograptus

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Clonograptus
Graptolites, like this Amplexograptus from the Ordovician near Caney Springs, Tennessee are good zone fossils. A zone fossil must have a short time span but a common animal of the time. Graptolites became extinct at the end of the Devonian.
Scientific classification
Kingdom:
Animalia
Phylum:
Hemichordata
Class:
Graptolithina
Genus:
Clonograptus

Clonograptus is a genus of graptolites. Groups of these animals were connected by stalklike structures to a central region. Species of Clonograptus are zone fossils, that help us estimate a precise age of Ordovician rocks.[1]

References

  1. ^ "Clonograptus | graptolite genus".
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