|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Strophomenata - Strophomenida - Bimuriidae
It was recombined as Christiania perrugata by Williams (1962) and Candela and Harper (2014).
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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 1962||Elongate, parallel-sided Christiania, slightly longer than wide with a concavo-convex lateral profile, over two-fifths .as deep as long in adult shells, and an evenly convex, transverse profile with steeply sloping sides; ornamentation consisting solely of crowded, thickened, concentric growth-lines; ventral muscle-scar less than one-third of the length of the pedicle valve, dental lamellae short, narrowly divergent and masked by secondary shell deposit in adult shells; both pairs of dorsal septa long, high and straight, subparallel with the median ridge; adductor muscle-platforms well defined, almost two-fifths as long as the brachial valve and commonly contained anteriorly by a pair of high secondary ridges, convex anteriorly.|