Rhynchonellida

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Rhynchonellida

lamp shell order

Also known as: Rhynchonellacea

Learn about this topic in these articles:

taxonomy of Brachiopoda

In lamp shells: Annotated classification
Order RhynchonellidaNarrow-hinged with functional pedicle; dorsal valve with or without a median septum; lophophore (of Holocene genera) dorsally spiral and attached to crura (supporting structures); spondylia rare; nearly 300 genera; Ordovician to Holocene.Order SpiriferidaLophophore supported by a calcareous spiral structure (brachidium); punctate or
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