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Anisopleurella balclatchiensis

Strophomenata - Strophomenida - Sowerbyellidae

Plectambonites quinquecostata balclatchiensis was named by Reed (1917).

It was recombined as Anisopleurella balclatchiensis by Williams (1962) and Candela and Harper (2014).

Sister species lacking formal opinion data

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Synonymy list
YearName and author
1917Plectambonites quinquecostata balclatchiensis Reed pp. 877 - 878 figs. Plate XIV, figs. 4-9
1962Anisopleurella balclatchiensis Williams pp. 185 - 187 figs. Pl. XVII, figs. 36, 37, 40, 41 ; P1. XVIII, figs. 1-3
2014Anisopleurella balclatchiensis Candela and Harper pp. Supplement 1

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phylumBrachiopodaCuvier 1805
subphylumRhynchonelliformeaWilliams et al. 1996
classStrophomenataWilliams et al 1996
orderStrophomenidaOpik 1934
superfamilyPlectambonitoideaJones 1928
familySowerbyellidaeOpik 1930
subfamilySowerbyellinaeOpik 1930
genusAnisopleurellaCooper 1956

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

F. R. C. Reed 1917Shell transverse, nearly or quite twice as wide as long, semicircular to semielliptical ; cardinal angles acute, sometimes slightly produced. Pedicle-valve uniformly and gently convex, rarely depressed or flattened towards lateral angles ; beak small, acute, not swollen, slightly incurved, scarcely projecting above hinge-line. Brachial valve flat or gently concave. Surface of pedicle-valve with 3 main equidistant radii diverging at 45° apart, forming a distinct median group ; interspaces very delicately striated. Internal characters insufficiently known.
A. Williams 1962Semicircular to subquadrate, eoncavo-convex Anisopleurella with the pedicle valve about one-half as long as the maximum width along the hinge-line and about two-fifths as deep as long; radial ornamentation consisting of very fine low costellae, about 12 per millimetre, and a triad of thick conspicuous costae, one median and two sublateral, each commonly occupying the crest of a low wide undulation in adult specimens, other thickened costellae rarely developed peripherally; divergent ventral diductor scars over two-fifths as long as the pedicle valve and almost two-thirds as long as wide; dorsal septal apparatus nearly two-thirds as long as wide.