Bivalvia - Cardiida - Tellinidae

Alternative combinations: Macoma (Psammacoma) gatunensis, Macoma (Tellina) gatunensis, Tellina gatunensis

Synonyms: Tellina (Eurytellina) aequilaterminata Brown and Pilsbry 1913, Tellina (Eurytellina) aequiterminata Brown and Pilsbry 1913, Tellina aequilaterminata Brown and Pilsbry 1913, Tellina aequiterminata Brown and Pilsbry 1913

Belongs to Psammacoma according to M. C. Perrilliat 1992

Sister taxa: Macoma (Psammacoma) acolasta, Macoma (Psammacoma) arctata, Macoma (Psammacoma) korobkovi, Macoma (Psammacoma) marmorea, Macoma (Psammacoma) riopirabica, Macoma (Psammacoma) talarensis, Macoma (Psammacoma) yoldiformis, Psammacoma (Psammacoma), Psammacoma candida, Psammacoma democraciana, Psammacoma diphas, Psammacoma falconensis, Psammacoma lamproleuca, Psammacoma olivella, Psammacoma panamensis, Psammacoma tageliformis, Psammacoma talaor, Psammacoma torynoides, Psammacoma zapotalensis

Subtaxa: Psammacoma gatunensis costaricensis

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Average measurements (in mm): 42.5 x 25.0, shell 44.5 x 24.0