|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Rhynchonellata - Rhynchonellida - Trigonirhynchiidae
It was assigned to Rhynchonellacea by Bassett and Cocks (1974) and Rubel and Rozman (1977); to Rhynchonelloidea by Jin and Chatterton (1997) and Musteikis and Modzalevskaya (2002); and to Rhynchotrematoidea by Savage and Goodwin (1998), Williams et al. (2002) and Jakobsen et al. (2014).
|Year||Name and author|
|1974||Trigonirhynchiidae Bassett and Cocks|
|1977||Trigonirhynchiidae Rubel and Rozman|
|1997||Trigonirhynchiidae Jin and Chatterton|
|1998||Trigonirhynchiidae Savage and Goodwin p. 437|
|2002||Trigonirhynchiidae Musteikis and Modzalevskaya|
|2002||Trigonirhynchiidae Williams et al. p. 1052|
|2014||Trigonirhynchiidae Jakobsen et al.|
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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.