Actinoptychus amblyoceros from Conset, Barbados. Single example on the slide. Prepared by JA Long. Olympus BHB microscope using 450nm LED light. 63x Leitz Pl Apo NA 1.4 objective, oil immersion. Olympus Aplanat Achromat condenser, oblique lighting, oil immersion. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 47 images stacked in Zerene (Pmax).
Actinoptychus amblyoceros (Ehrenberg) A.W.F.Schmidt 1874. Published in: Schmidt, A.[W.F.] (1874). Atlas der Diatomaceenkunde. Series I, Heft 1. pp. pls 1-4. Aschersleben: [Verlag von Ernst Schlegel]. Plate 1, Figure 25. This name is currently regarded as a synonym of Symbolophora amblyoceros (Ehrenberg) G.R.Hasle & P.A.Sims. One of the other names it is known as is Schuettia amblyoceras (Ehrenberg) De Toni 1894 (written as S. amblyoceros on the slide label).