Inarticulata
Inarticulata was historically defined as one of the two classes of the phylum Brachiopoda and referred to those having no hinge. The other class was Articulata, meaning articulated – having a hinge between the dorsal and ventral valves. These classifications have now been superseded, see brachiopod classification.
See also
- Treatise on Invertebrate Paleontology — also mentions the new Brachiopoda classification system
References
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This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). Encyclopædia Britannica (11th ed.). Cambridge University Press.
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