|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Tergomya - Tryblidiida - Tryblidiidae
It was assigned to Tryblidiinae by Yochelson (1958) and Knight and Yochelson (1960); to Bipulvinidae by Starobogatov (1970); to Tryblidiidae by Runnegar and Jell (1976); and to Tryblidiida by Sepkoski (2002).
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.
|E. L. Yochelson 1958||Low, spoon-shaped monoplacophorans having the interior of the dorsum flattened for more than half of its length and set off from the anterior and posterior slopes; apex strongly anterior, just projecting over apertural margin ; five pairs of subtriangular lateral muscle scars located relatively high on lateral slopes, with some additional markings on anterior slope; ornament unknown; interior of shell with two furrows parallel to lines of muscle scars.|