NMNH Ostreopsis marinus type specimen

Description:

Figs 1-5. Cells of Ostreopsis marinus sp. nov. Figs 1-4. Scanning electron microscopy. Fig. 1. Morphology of epithecal plates and position of apical pore plate are shown (Po). Fig. 2. Hypothecal plates. Fig. 3. Antapical plate 1" is larger; plate 2" is tiny. Thecal surface is smooth with small, evenly distributed pores (arrows). Fig. 4. The ventral opening (Vo) is situated in the cingulum adjacent to a ridged plate (Rp). Fig. 5. Epifluorescence light microscopy of hypothecal plates; Ip plate is in the center. EMu: HOLOTYPE SEM NEGATIVE # 212055; SEM STUB # 212; FIELD # 96/10; ACCESSION # 2002799; CATALOG #1537; FIGURE # 1.