Rhynchonellida
Rhynchonellida (rhynchonellids; class Articulata) Order of brachiopods (Brachiopoda), with rostrate shells, a functional pedicle, and a delthyrium partly restricted by a pair of deltidial plates. The shell is usually impunctate. They appeared first in the Middle Ordovician. The order contains about 250 genera, most of which are extinct.
Rhynchonellida
Rhynchonellida (phylum Brachiopoda, class Articulata) An order of brachiopods that have rostrate shells, a functional pedicle, and a delthyrium partly restricted by a pair of deltidial plates. The shell is usually impunctate. They appeared first in the Middle Ordovician. The order contains about 250 genera, most of which are extinct.
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Rhynchonellids
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Rhynchonellids