Pantocsekiella sp.

Samant, Bandana, Kumar, Arun, Mohabey, D. M., Humane, Sumedh, Kumar, Deepesh, Dhoble, Anup & Pizal, Priya, 2020, Centropyxis aculeata (testate lobose amoebae) and associated diatoms from the intertrappean lacustrine sediments (Maastrichtian) of central India: Implications in understanding paleolake ecology, Palaeontologia Electronica (a 60) 23 (3), pp. 1-18 : 9

Pantocsekiella sp. ( ? ocellata Kiss and Ács )

Figure 6.2

Description. Valves circular; internal surface view shows large circular foramen located at the junction between valve face and mantle; one slanting rimoportulae in the form of the lip like structure is present between the costae; at least one fultoportulae is present at the central area; striae are not visible in the internal surface view but costae are clearly seen. In between two costae, there may be one or two alveolate striae.

Dimensions. Valve diameter 5-5.2 µm, diameter of central area 3.2-3.4 µm, striae 25-30 in 10 µm, costae 30 in 10 µm.

Figures

FIGURE 6. 1. SEM photograph of Centropyxis aculeata (Ehrenberg, 1832). 2. SEM photographs of the centric diatom Pantocsekiella sp. (internal valve view) on the test of Centropyxis aculeata (Ehrenberg, 1832). 3 and 5. SEM photographs of the pennate diatom Achnanthes sp. on the test of Centropyxis aculeata (Ehrenberg, 1832). 4. SEM photograph of the pennate diatom Oricymba sp. on the wall of Centropyxis aculeata (Ehrenberg, 1832). 6. SEM photograph of the pennate diatom Diadesmis sp. on the wall of Centropyxis aculeata (Ehrenberg, 1832).