Orthacea

[ȯr′thās·ē·ə]

(paleontology)

An extinct group of articulate brachiopods in the suborder Orthidina in which the delthyrium is open.

References in periodicals archive ?

Nekotorye predstaviteli nadsemejstva Orthacea iz verkhnego ordovika Estonii [Some representatives of the Orthacea from the Upper Ordovician of Estonia].

A multiproxy study of the Puhmu core section (Estonia, Upper Ordovician): consequences for stratigraphy and environmental interpretation

Lower Ordovician brachiopods of the superfamilies Orthacea, Dalmanellacea and Syntrophiacea of Eastern Baltic.

New species of Estlandia (Clitambonitidina, Brachiopoda) in the Upper Ordovician of the East Baltic/Estlandia (Clitambonitidina, Brachiopoda) uus liik Ida-Baltikumi Ulem-Ordoviitsiumist

Nekotorye predstaviteli nadsemejstva Orthacea iz verkhnego ordovika Estonii [Some representatives of the subfamily Orthacea in the Upper Ordovician of Estonia].

Revision of the concept of the orthide brachiopod Cyrtonotella in the Middle Ordovician of the East Baltic/Baltikumi Kesk-Ordoviitsiumi ortiidse brahhiopoodi Cyrtonotella kontseptsiooni revisjon

Einige Vertreter der Superfamilie Orthacea des oberordoviziums Estland.

New Hirnantian orthide brachiopods from the type section of the Porkuni Stage (Porkuni quarry, northeastern Estonia)/Hirnantia uued ortiidsed brahhiopoodid Porkuni lademe tuuplabiloikest (Porkuni murd Kirde-Eestis)

Some representatives of the superfamily Orthacea from the upper Ordovician of Estonia.

Platystrophia (Orthida) and new related Ordovician and early Silurian brachiopod genera/Platystrophia (Orthida) ja uued sugulaslikud Ordoviitsiumi ja Vara-Siluri kasijalgsete perekonnad

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