Kingdom Animalia Order † Dendroidea Phylum Hemichordata | Class † Graptolithina Family † Dendrograptidae Rank Genus | |
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Similar Graptolithina, Didymograptus, Tetragraptus, Diplograptus, Caryocrinites | ||
Dictyonema is a genus of dendroid graptolites in the order Dendroidea.
Contents
Fossil record
Fossils of Dictyonema are found from the Upper Cambrian to the Devonian (age range: from 488.3 to 383.7 million years ago.). They are known from various localities in Europe, North America, South America, China and Morocco.
Description
These colonial organism are characterised by a conical, net-like structure. The colonies (known as rhabdosomes) are branched and may vary from almost discoidal to almos cylindrical. They were stationary planktonic suspension feeders.
Species
References
Dictyonema (graptolite) Wikipedia(Text) CC BY-SA