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Glyptorthis balclatchiensis

Rhynchonellata - Orthida - Glyptorthidae

Orthis balclatchiensis was named by Davidson (1883).

It was recombined as Orthis (Hebertella) balclatchiensis by Reed (1917); it was recombined as Glyptorthis balclatchiensis by Williams (1962); it was recombined as Glyptorthis balcletchiensis by Candela and Harper (2014) and Wright and Stigall (2014).

Synonymy list
YearName and author
1883Orthis balclatchiensis Davidson p. 176 figs. pl. xiii, figs. 12-14
1917Orthis (Hebertella) balclatchiensis Reed p. 840 figs. pl. vii, figs. 13-20.
1962Glyptorthis balclatchiensis Williams pp. 109 - 111 figs. P1. IX, figs. 21-26, 31, 32
2014Glyptorthis balcletchiensis Candela and Harper pp. Supplement 1
2014Glyptorthis balcletchiensis Wright and Stigall p. 894

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phylumBrachiopodaCuvier 1805
subphylumRhynchonelliformeaWilliams et al. 1996
classRhynchonellataWilliams et al. 1996
orderOrthidaSchuchert and Cooper 1932
suborderOrthidinaSchuchert and Cooper 1932
superfamilyOrthoideaWoodward 1852
familyGlyptorthidae(Schuchert and Cooper 1931)
genusGlyptorthisFoerste 1914
speciesbalclatchiensis(Davidson 1883)

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.

A. Williams 1962Subelliptical and unequally biconvex Glyptorthis with the brachial valve less than threequarters as long as wide; incipient dorsal sulcus rarely persisting throughout adult growth and most commonly replaced by a narrow, rounded fold embracing the costellae of sector I with a corresponding median sulcus in the pedicle valve; ornamentation consisting of 14-20 costae with well-developed internal secondary costellae and rare external secondaries and tertiaries, concentric lamellae conspicuous, varying from 2 to 4, but most commonly 3, per millimetre at the 5 mm. growth-stage: ventral muscle-scar subtriangular to cordate, slightly longer than wide and extending antero-medianly for about two-fifths the length of the pedicle valve.