|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Gastropoda - Rissoidae
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.
|W. F. Ponder 1984||Species in this group have tall-spired, smooth shells with a prosocline outer lip. Fischer also includes T. microstoma (Piette, 1855 nom. nud.) Fischer, 1969. There is little in the shell characters of Thierachella indicative of its relationships although they may be with the Rissoidae or, possibly, Barleeidae.|