
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 These classifications have now been superseded, see brachiopod classification.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 == ...
Found on
http://en.wikipedia.org/wiki/Inarticulata

(from the article `lamp shells`) The Inarticulata, the most abundant brachiopods of the Cambrian, soon gave way to the Articulata and declined greatly in number and variety toward ...
Found on
http://www.britannica.com/eb/a-z/i/14
No exact match found.