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|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Pisidium (pea clam)
Bivalvia - Cardiida - Sphaeriidae
It was assigned to Sphaeriidae by Schultz and Cheatum (1970) and Lamprell and Healy (1998); to Bivalvia by Kiessling (2003); to Pisidiidae by Vokes (1980), Woodring (1982) and Bouchet et al. (2010); and to Pisidiinae by Mandic et al. (2015).
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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.