Discinida
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| Discinida Temporal range:
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Scientific classification 
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| Kingdom: | Animalia | ||||||
| Phylum: | Brachiopoda | ||||||
| Subphylum: | Linguliformea | ||||||
| Order: | Discinida | ||||||
| Superfamilies | |||||||
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Discinida is an order of brachiopods comprising the extant superfamily Discinoidea, and the extinct superfamilies Botsfordioidea (early—mid-Cambrian) and Acrotheloidea (early Cambrian–Early Ordovician).[2] It represents a sister taxon to the Lingulids, and is possibly paraphyletic with respect to the Acrotretoids.[3][verification needed]—or the acrotretids are paraphyletic with respect to it.[4] The group displays a broad range of shell structures, some of which incorporate substantial organic or silicified components.[3]
References
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