Productida is an extinct order of brachiopods in the extinct class Strophomenata. Members of Productida first appeared during the

Silurian The Silurian ( ) is a geologic period and system spanning 23.5 million years from the end of the Ordovician Period, at million years ago ( Mya), to the beginning of the Devonian Period, Mya. The Silurian is the third and shortest period of t ...

. They represented the most abundant group of brachiopods during the

Permian The Permian ( ) is a geologic period and System (stratigraphy), stratigraphic system which spans 47 million years, from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.902 Mya. It is the s ...

period, accounting for 45-70% of all species. The vast majority of species went extinct during the Permian-Triassic extinction event, though a handful survived into the Early Triassic. Many productids are covered in hollow tubular spines, which are characteristic of the group. A number of functions for the spines have been proposed, including as a defensive mechanism against predators.

Taxonomy

Following the Treatise * Suborder Chonetidina ** Superfamily Chonetoidea *** Family Strophochonetidae *** Family Chonostrophiidae *** Family Anopliidae *** Family Eodevonariidae *** Family Chonetidae *** Family Rugosochonetidae *** Family Daviesiellidae * Suborder Productidina ** Superfamily Productoidea *** Family Productellidae *** Family Productidae ** Superfamily Echinoconchoidea *** Family Echinoconchidae *** Family Sentosiidae ** Superfamily Linoproductoidea *** Family Linoproductidae *** Family Monticuliferidae *** Family Shrenkiellidae * Suborder Strophalosiidina ** Superfamily Strophalosioidea *** Family Strophalosiidae *** Family Chonopectidae *** Family Araksalosiidae ** Superfamily Aulostegoidea *** Family Aulostegidae *** Family Cooperinidae *** Family Scacchinellidae ** Superfamily Richthofenioidea *** Family Richthofeniidae *** Family Hercosiidae *** Family Cyclacanthariidae *** Family Gemmellaroiidae * Suborder Lyttoniidina ** Superfamily Lyttonioidea *** Family Lyttoniidae *** Family Rigbyellidae ** Superfamily Permianelloidea *** Family Permianellidae

References

External links

* * * Strophomenata Prehistoric brachiopod orders Late Ordovician first appearances Early Triassic extinctions {{brachiopod-stub