|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Rhynchonellata - Spiriferida - Ingelarellidae
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. B. Waterhouse 1987||Transverse shells with ventral sulcus commencing near posterior third and umbo either smooth, or bearing very shallow furrow, dorsal fold low posteriorly, no plicae or subplicae. Adminicula moderately long, moderately spaced and subparallel, tabellae comparatively short, diverge widely in front of hinge, then subparallel.|