|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
It was corrected as Orbigniana by Barras (2007).
It was assigned to Collyritidae by Wagner and Durham (1966); to Disasteroida by Sepkoski (2002); and to Atelostomata by Barras (2007).
|C. G. Barras 2007||Stem group Atelostomata with an elongate disjunct apical disc. The disc contains a number of complemental plates that preclude the direct contact of oculars II and IV and also of genitals 1 and 4 (Fig. 4D). The disc trivium and bivium are joined by a short string of complemental plates, similar in size to the genitals. The genus retains the primitive periproctal groove (Pl. 1, fig. 6a) and also phyllodes (Fig. 10F) and a peristomial well (Pl. 1, fig. 6b).|