Sreenivasa, M. R. (1971). New fossil diatoms from Ontario. II. <i>Achnanthes duthii</i> sp. nov., <i>Achnanthes undulatus</i> sp. nov., and <i>Neidium distincte-punctatum</i> Hustedt var. major var. nov. <em>Phycologia.</em> 10(1): 79-82., available online athttps://doi.org/10.2216/i0031-8884-10-1-79.1 page(s): p. 79; fig. 1a-d, fig. 2a-c [details]
Kociolek, J.P.; Blanco, S.; Coste, M.; Ector, L.; Liu, Y.; Karthick, B.; Kulikovskiy, M.; Lundholm, N.; Ludwig, T.; Potapova, M.; Rimet, F.; Sabbe, K.; Sala, S.; Sar, E.; Taylor, J.; Van de Vijver, B.; Wetzel, C.E.; Williams, D.M.; Witkowski, A.; Witkowski, J. (2025). DiatomBase. Achnanthes duthiei Sreenivasa, 1971 †. Accessed at: https://www.diatombase.org/aphia.php?p=taxdetails&id=662098 on 2026-07-28
original descriptionSreenivasa, M. R. (1971). New fossil diatoms from Ontario. II. <i>Achnanthes duthii</i> sp. nov., <i>Achnanthes undulatus</i> sp. nov., and <i>Neidium distincte-punctatum</i> Hustedt var. major var. nov. <em>Phycologia.</em> 10(1): 79-82., available online athttps://doi.org/10.2216/i0031-8884-10-1-79.1 page(s): p. 79; fig. 1a-d, fig. 2a-c [details]