Dichograptidae is an extinct family of

graptolite Graptolites are a group of colonial animals, members of the subclass Graptolithina within the class Pterobranchia. These filter-feeding Filter feeders are a sub-group of suspension feeding animals that feed by straining suspended matter and ...

s. Fossils are found mostly from the

Late Ordovician The Ordovician ( ) is a geologic period and system, the second of six periods of the Paleozoic Era. The Ordovician spans 41.6 million years from the end of the Cambrian Period million years ago (Mya) to the start of the Silurian Period Mya. The ...

to the

Early Devonian The Early Devonian is the first of three Epoch (geology), epochs comprising the Devonian period, corresponding to the Lower Devonian Series (stratigraphy), series. It lasted from and began with the Lochkovian Stage , which was followed by the P ...

Genera

List of genera from Maletz (2014): *†'' Anthograptus'' Törnquist, 1904 *†'' Calamograptus'' Clark, 1924 *†'' Clonograpsus'' Nicholson, 1873 *†'' Ctenograptus'' Nicholson, 1876 *†'' Dichograpsus'' Salter, 1863 *†'' Hermannograptus'' Monsen, 1937 *†'' Holograptus'' Holm, 1881a *†'' Kellamograptus'' Rickards & Chapman, 1991 *†'' Kstaugraptus'' Tzaj, 1973 *†'' Loganograptus'' Hall, 1868 *†'' Mimograptus'' Harris & Thomas, 1940 *†'' Orthodichograptus'' Thomas, 1972 *†'' Rouvilligraptus'' Barrois, 1893 *†'' Schizograptus'' Nicholson, 1876 *†'' Temnograptus'' Nicholson, 1876 *†'' Triaenograptus'' Hall, 1914 *†'' Tridensigraptus'' Zhao, 1964 *†'' Trochograptus'' Holm, 1881a

References

Graptolites Prehistoric hemichordate families {{Hemichordate-stub