Spiriferida

References

Images

Illustration of an early Silurian coral-stromatoporoid community showing various labeled marine organisms, including corals, bryozoans, brachiopods, crinoids, trilobites, and a nautiloid, arranged on and around a block of seafloor substrate with a scale bar indicating centimeters.

Silurian Pentamerus community

Spiriferida

brachiopod order

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lamp shells
Annotated classification
Order SpiriferidaLophophore supported by a calcareous spiral structure (brachidium); punctate or impunctate, usually biconvex; delthyrium open or closed; more than 300 genera; mid-Ordovician to Jurassic.Order TerebratulidaPedicle functional, cyrtomatodont teeth; lophophore supported wholly or in part by a calcareous loop, short or long and…
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Order SpiriferidaLophophore supported by a calcareous spiral structure (brachidium); punctate or impunctate, usually biconvex; delthyrium open or closed; more than 300 genera; mid-Ordovician to Jurassic.Order TerebratulidaPedicle functional, cyrtomatodont teeth; lophophore supported wholly or in part by a calcareous loop, short or long and…
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