Acrotretoidea is a superfamily of brachiopods containing the following families:
Family Number of genera Fossil rangeAcrotretidae55 Lower Cambrian – SilurianCurticiidae 1 Middle – Upper CambrianTorynelasmatidae 9 Ordovician (Arenig) – SilurianEoconulidae 3 Ordovician (Arenig – Ashgill)Ceratretidae 8 Lower – Upper CambrianEphippelasmatidae 12 Upper Cambrian – OrdovicianScaphelasmatidae 6 Middle Cambrian - Upper SilurianBiernatidae 5 Lower Ordovician – Middle Devonian
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