|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Strophomenata - Strophomenida - Strophomenidae
|Year||Name and author|
|1942||Dactylogonia geniculata Ulrich and Cooper|
|1956||Dactylogonia 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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|G. A. Cooper 1956||Shell 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.