Based on the lectotype specimen herein selected, Clathrodictyon amygdaloides subvesiculosum Lecompte is raised to species status and assigned to Stromatoporella. In Clathrodictyon amygdaloides subvesiculosum (1951, p. 143, PL 18, figs. 3, 3a, 3b), Lecompte thought that he had a specimen replicated by heteromorphic coenosteal lenses (“Les lentilles hétéromorphes”). Examination of his original slides in the collections of the Institute Royal des Sciences Naturelles de Belgique reveals that the specimen consists of overgrowths of several laminar coenostea demarcated by eroded coenosteal surfaces and, in places, intercalated matrix sediment (vertical sections). The coenostea belong to two different genera: Actinostroma, as indicated by its Y-shaped pillars and laminae composed of a transversely fibrous microfabric, and Stromatoporella, as demonstrated by the presence of ring-pillars and ordinocellular laminae.