Monograptidae

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Monograptidae
Temporal range: Ordovician - Devonian
Monograptidae - Monograptus flemingi.JPG
Fossil of Monograptus flemingi
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Hemichordata
Class: Pterobranchia
Subclass: Graptolithina
Order: Graptoloidea
Suborder: Axonophora
Infraorder: Neograptina
Superfamily: Monograptoidea
Family: Monograptidae
Lapworth, 1873

Monograptidae is an extinct family of graptolites of the order Graptoloidea. [1] Monograptids have only one row of thecae per stipe (stem, branch), unlike the biserial graptolites which have two opposing rows of thecae per stipe. [2]

Contents

Fossil record

Fossils of Monograptidae are found from the Ordovician to the Devonian (age range: from 460.9 to 402.5 million years ago). They are especially important during the early Silurian. [2] They are known from various localities in Europe, North America, Argentina, China, Central Asia, Southeast Asia, Australia, Algeria and Morocco. [1]

Genera

Maletz (2014) identifies 98 genera of Monograptidae. The family can possibly be divided into several subfamilies. [3]

References

  1. 1 2 Paleobiology Database Paleobiology Database
  2. 1 2 Maletz, Jörg (2017). Graptolite Paleobiology. Wiley-Blackwell. ISBN   9781118515617.
  3. Maletz, Jörg (2014). "The classification of the Pterobranchia (Cephalodiscida and Graptolithina)". Bulletin of Geosciences. 89 (3): 477–540. doi: 10.3140/bull.geosci.1465 . ISSN   1214-1119.