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Eostropheodonta conradii

Strophomenata - Strophomenida - Leptostrophiidae

Australostrophia conradii was named by Harrington (1950).

It was recombined as Aphanomena conradii by Harper and Boucot (1978); it was recombined as Eostropheodonta conradii by Benedetto et al. (2013).

Synonymy list
YearName and author
1950Australostrophia conradii Harrington p. 58 figs. pl. 2 f. 1-5
1978Aphanomena conradii Harper and Boucot p. 67
2013Eostropheodonta conradii Benedetto et al. pp. 73 - 75 fig. 7

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phylumBrachiopodaCuvier 1805
subphylumRhynchonelliformeaWilliams et al. 1996
classStrophomenataWilliams et al 1996
orderStrophomenidaOpik 1934
superfamilyStrophomenoideaKing 1846
familyLeptostrophiidaeCaster 1939
genusEostropheodontaBancroft 1949

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.

J. L. Benedetto et al. 2013Outline transversely semi elliptical, with greatest width at hinge line, up to 24 mm wide and 20 mm long. Shell profile concave-convex. Gently convex ventral valve with maximum height at about one-quarter valve length. Ventral umbo inconspicuous. Ventral interarea apsacline, planar, low, transversely striated, with delthyrium covered apically by a convex deltidium. Dorsal interarea smaller and anacline. Hinge line lacking denticles. Unequally parvicostellate ornament of fine primary costellae numbering 5 per 5 mm at valve margin in between which are 2–3 parvicostellae. Ventral interior with stout rounded teeth diverging at about 120 degrees, supported by strong, proportionally long dental plates extending anteriorly at right angle. Ventral muscle field large, subtriangular, faintly impressed, bounded posterolaterally by anterior prolongation of dental plates. Cardinal process lobes discrete, directed ventrally, elongate, extending slightly beyond the anterior ends of socket ridges, diverging at about 40 degrees. Dorsal median ridge originating anterior to the cardinal process lobes, initially broad and undifferentiated, narrowing anteriorly. Socket ridges nearly straight, much slender than cardinal process lobes, diverging at about 90 degrees. Dorsal muscle field not impressed.