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Отряд Strophomenida

Отряд Strophomenida - включал порядка 400 самых разнообразных родов плеченогих, которые существовали в х насчитывало около 400. The Strophomenida were the largest order of brachiopods, with about 400 genera. They were also by far the most morphologically diverse group, and included some very unusual forms, as well as more "normal" forms like those pictured above. Strophomenids first appeared in the Ordovician and persisted until the middle Jurassic.