|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Rhynchonellata - Rhynchonellida - Trigonirhynchiidae
It was assigned to Camarotoechiidae by Rõõmusoks (1964); to Trigonorhynchiidae by Mitchell (1977); to Rhynchonellida by Sepkoski (2002); and to Rostricellulinae by Jin and Chatterton (1997) and Williams et al. (2002).
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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.