Monograptidae
| Monograptidae Temporal range: | |
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| Fossil of Monograptus flemingi | |
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| Family: | Monograptidae Lapworth, 1873 |
Monograptidae is an extinct family of graptolites of the order Graptoloidea. Monograptids have only one row of thecae per stipe (stem, branch), unlike the biserial graptolites which have two opposing rows of thecae per stipe.