Atactotoechidae

Classification
Phylum: Bryozoa
Class: Stenolaemata
Order: Trepostomatida
Family: Atactotoechidae (Duncan, 1939)
Cincinnatian Genera: Cyphotrypa, Leptotrypa

Geologic Range
Ordovician- Devonian

Common Paleoecology
Atactotoechidae is an extinct family of colonial epifaunal suspension feeders

Description of the Family

Ramose to massive zoaria
Angular zoaria that have laminated amalgamate walls
Straight diaphragms or gently curved cystiphragms
Absence of mesopores
Acanthopores composed of nongranular laminated tissue

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Treatise on Invertebrate Paleontology (1953):

Zoaria ramose to massive. Zooecia angular, with laminated amalgamate walls which are granular only in early mature region; straight diaphragms or gently curved cystiphragms. Mesopores absent; acanthopores of nongranular laminated tissue.

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Cyphotrypa

Leptotrypa