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Monograptidae

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Extinct family of graptolites
Monograptidae
Temporal range: Ordovician - Devonian
Fossil of Monograptus flemingi
Scientific classification
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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]

Fossil record

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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

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

References

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