|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Bivalvia - Trigoniida - Laevitrigoniidae
It was assigned to Myophorellinae by Poulton (1979); to Trigonioida by Sepkoski (2002); to Frenguelliellinae by Pérez et al. (2008); and to Trigoniidae by Hayami (1975) and Scholz et al. (2008).
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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.
|T. P. Poulton 1979||Flank with concentric costae that meet the anterior margin at high angles and that may be somewhat irregular. Area with concentric costellae or growth lines.|