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Spniferites multisphaerus

Zonneveld, K.A.F. and Pospelova V. (2015). A determination key for modern dinoflagellate cysts. Palynology 39 (3), 387- 407.

 
dorsal view
photographs: Vera Pospelova
cross section
cross section
detail of processes

Field characteristics

Spiniferites multisphaerus Price and Pospelova 2014

Field characteristics:
Oval to pear-shaped proximochorate cyst with a pronounced apical protuberance. Wall is relatively thick and is constructed of small bubble-like elements. Processes are stubby, furcate and contain hollow bubble like elements. Tabulation is clearly expressed. Acheopyle is formed by the loss of paraplate 3 (type P).

Dimensions: Cyst body: 36.5 (43.0) 51.0 µm (width) x 40.9 (50.1) 63.1 (length) µm; length of processes: 1.5 (4.4) 8.0 µm; wall thickness: 1.0 (1.5) 2.1 µm.
Motile affinity: unknown
Stratigraphic range: Recent

Comparison with other species:
This species can easily be distinguished from all other spiniferites species in having an apical protusion and a relatively thick cyst wall that consists of small bubble like elements.