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Palaecysta morondavaensis

Palaecysta morondavaensis Chen, 2013, p.293, pl.3, figs.27–36; text-fig.6; text-fig.10, no.3; text-fig.11, nos.69–70.

Holotype: Chen, 2013, pl.3, fig.34; text-fig.9, no.3, text-fig.10, no.29.
Age: late Tithonian–Berriasian.

Original description (Chen, 2013):
Palaecysta morondavaensis sp. nov. morondava,
in honour of the name of sedimentary basin where the well was drilled.
Holotype. Plate 3, Figure 34 Slide 1256-65/N1, U41; Figure 6
Paratypes. Plate 3, Figure 27 Slide 1304-07, E18; Plate 3, Figure 28 Slide 1286-95/3, P52; Plate 3, Figure 29 Slide 1280-83, S17; Plate 3, Figure 30 Slide 1256-65/2, F52; Plate 3, Figure 31 Slide 1226-35/1, N60; Plate 3, Figure 36 Slide 1256-65/N2, X59.
Other specimens. Plate 3, Figures 32, 33, 35

Synonym
Systematophora areolata Klement (Riding et al., 1999)
Systematophora areolata Klement (Helby & McMinn, 1992)

Diagnosis: The long basal membrane (branching at about mid-length) and the robust and thick nature of the process clusters are the main characteristic for this species (Figure 6; Figure 9, drawing 3; Figure 10, drawing 29; Figure 11, drawings 69, 70).

Dimensions (based on measurements from 50 specimens):
Holotype – Whole specimen 150 µm; central body 95 µm; process length 50 µm
Range – Whole specimen 130 (145) 155 µm; central body 75 (85) 98 µm; process length 138 (43) 50 µm

Remarks: This species is most similar to, but differs from, P. pectita and P. pectita subsp. merinai in having much longer basal membrane in its process clusters. The species can be further differentiated from P. palmula (Davey 1982) in having much larger body size (on average, greater than 140 mm as opposed to smaller than 100 mm in P. palmula in diameter), and very robust process clusters, with deeper incisions.
Occurrences in the Ankamotra-1 well. P. morondavaensis occurred consistently in Zone 3-4 (Late Tithonian to Berriasian).
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