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    Rhynchonellata - Wikipedia

    The Rhynchonellata is a class of Lower Cambrian to Recent articulate brachiopods that combines orders from within the Rhynchonelliformea (Articulata revised) with well developed pedicle attachment. Shell forms vary from those with wide hinge lines to beaked forms with virtually no hinge line and from generally โ€ฆ See more

    Orders assigned to the Rhynchonellata, in temporal sequence, include:
    โ€ข โ€ Protorthida (Lower Cambrian โ€“ Upper Devonian) See more

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  2. Rhynchonellata - mindat.org

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    The Rhynchonellata is a class of Lower Cambrian to Recent articulate brachiopods that combines orders from within the Rhynchonelliformea (Articulata revised) with well developed pedicle attachment. Shell forms vary from those with wide hinge lines to beaked forms with virtually no hinge line and from generally smooth to strongly plicate.
    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.
    Some, like the Rhynchonellida and Spiriferida, may be strongly plicate, with a median fold and sulcus. Others, like the Spiriferinida and Terebratulida are basically smooth. Most have shells without perforations known as punctae and are impunctate but some e.g. Orthida and Rhynchonellida have punctate offshoots.
    Among other features used in the suprafamilial classification of the rhynchonellata, the strophic shells of spriferides (s.l), thecideides, and some terebratulides were derived from astrophic stem groups and, therefore, separably taxonomically from those of orthides and protoorthides.
  4. Rhynchonellata โ€“ Atlas of Ordovician Life

    WEBRhynchonellata is a class of brachiopods with a pedicle developed from a rudiment and various shell forms. Learn about its orders, characteristics, and published descriptions from the Atlas of Ordovician Life.

  5. Rhynchonellata - GBIF

  6. Rhynchonella - Wikipedia

  7. Rhynchonellida โ€“ Atlas of Ordovician Life

    WEBRhynchonellida is an order of brachiopods with biconvex shell and fold on the dorsal valve. It includes extant and extinct families with geologic range from Early Ordovician to Recent.

  8. Rhynchonellata - Wikipedia

  9. The Phylogeny and Classification of Rhynchonelliformea

  10. Palaeos Invertebrates: Brachiopoda: Rhynchonellata

  11. WoRMS - World Register of Marine Species - Rhynchonellata