Arthritica crassiformis

{{Short description|Species of bivalve}}

{{Use New Zealand English|date=August 2024}}

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{{Speciesbox

| taxon = Arthritica crassiformis

| authority = Powell, 1935

| display_parents = 3

}}

File:Arthritica_crassiformis_Powell,_1933_Ponder_1965_fig_4e.jpg

Arthritica crassiformis is a species of small marine bivalve mollusc in the family Lasaeidae.