Orthidina

Orthidina

[ȯr′thid·ən·ə]
(paleontology)
The principal suborder of the extinct Orthida, including those articulate brachiopods characterized by biconvex, finely ribbed shells with a straight hinge line and well-developed interareas on both valves.
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References in periodicals archive ?
Order ORTHIDA Schuchert & Cooper, 1932 Suborder ORTHIDINA Schuchert & Cooper, 1932 Superfamily ORTHOIDEA Woodward, 1852 Family GLYPTORTHIDAE Schuchert & Cooper, 1931 Genus Bassettella Zuykov & Butts, 2008
1996 Order ORTHIDA Schuchert & Cooper, 1932 Suborder ORTHIDINA Schuchert & Cooper, 1932 Superfamily PLECTORTHOIDEA Schuchert in Schuchert & LeVene, 1929 Family PLATYSTROPHIIDAE Schuchert in Schuchert & LeVene, 1929, emend.