MolluscaBase eds. (2024). MolluscaBase. Arca (Arca) umbonata Lamarck, 1819. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1722136 on 2024-07-12
basis of recordMaury, C. J. (1925). A further contribution to the paleontology of Trinidad (Miocene Horizons). <em>Bulletins of American Paleontology.</em> 10(42): 153-402, pls. 1-43., available online athttps://www.biodiversitylibrary.org/page/32509152 page(s): 187, pl. 3, fig. 6; pl. 8, fig. 4 [details]