Mallomonas pleuriforamen is an extinct species of heterokont algae. It was first found in Middle Eocenelacustrinedeposits from northwestern Canada. It was a tiny free-living cell, about the width of a human hair. It had ornate scales and bristles, as well as long spines. It was a relatively common part of lake or pond plankton. It differs from its cogenerates by the number, distribution, and size of its base plate pores, the secondary structures on the scale surfaces, together with characteristics of its bristles.[1][2]
^Jo, Bok Yeon; Shin, Woongghi; Kim, Han Soon; Siver, Peter A.; Andersen, Robert A. (2013). "Phylogeny of the genusMallomonas(Synurophyceae) and descriptions of five new species on the basis of morphological evidence". Phycologia. 52 (3): 266–278. Bibcode:2013Phyco..52..266J. doi:10.2216/12-107.1. ISSN0031-8884. S2CID37080213.
Siver, Peter A., et al. "Assessing the evolutionary history of the class Synurophyceae (Heterokonta) using molecular, morphometric, and paleobiological approaches." American Journal of Botany 102.6 (2015): 921-941.
