Class Graptolithina | Phylum Hemichordata Rank Genus | |
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Similar Tetragraptus, Didymograptus, Phyllograptus, Tetragraptus approximatus, Diplograptus | ||
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.
References
Clonograptus Wikipedia(Text) CC BY-SA