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Dactylogonia geniculata

Strophomenata - Strophomenida - Strophomenidae

Dactylogonia geniculata was named by Ulrich and Cooper (1942).

Sister species lacking formal opinion data

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Synonymy list
YearName and author
1942Dactylogonia geniculata Ulrich and Cooper
1956Dactylogonia geniculata Cooper pp. 827 - 828 figs. Plate 216, D, figures 14-30; plate 217, M, figures 38, 39; plate 21S, B, figures 4-7 ; plate 219, E,

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phylumBrachiopodaCuvier 1805
subphylumRhynchonelliformeaWilliams et al. 1996
classStrophomenataWilliams et al 1996
orderStrophomenidaOpik 1934
superfamilyStrophomenoideaKing 1846
familyStrophomenidaeKing 1846
subfamilyFurcitellinaeWilliams 1965
genusDactylogoniaUlrich and Cooper 1942
speciesgeniculataUlrich and Cooper 1942

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.

G. A. Cooper 1956Shell wider than long with acute cardinal extremities; profile concavo-convex; lateral margins sloping medially; anterior margin broadly convex to subtruncate Surface covered by closely crowded costellae of unequal size, S to 9 of the smaller costellae arranged into groups by the scattered larger ones.

Pedicle valve with the posterior 9 mm. nearly flat but the anterior narrowly convex; geniculation takes place at about 9 mm. anterior to the beak and the angle of geniculation is about 9S o. Beak erect, the umbo inconspicuous but slightly swollen. Geniculated part narrowly convex; front slope slightly convex in profile and steep.