|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Bivalvia - Pholadomyida - Megadesmidae
It was corrected as Unklesbyella by Hoare et al. (1978); it was misspelled as Unklesbyella by Sepkoski (2002).
It was assigned to Megadesmidae by Hoare et al. (1978); and to Pholadomyoida 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.
|R. D. Hoare et al. 1978||Small, equivalved, strongly inequilateral megadesmid with a pronounced umbonal ridge, nongaping margins, and inflated umbones.
Small shells with truncated posterior margin; strong umbonal ridge; es-cutcheon present but lunule absent; prosogyrate beaks; nymph present; dentition consisting of a large tooth under beak of right valve and a narrow elongate tooth anterior to beak of left valve.