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Selenopemphix brevispinosum

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

 
 
 
 

Field Characteristics

Selenopemphix brevispinosum Head et al. 1989

Characteristics:
Cyst with smooth to faintly granulate body and utural ornament restricted to the sutural margins and consisting of short distally expanded processes. The archeopyle is large and offset; 2a intercalary.

Motile affinity: unknown
Dimensions: Cyst body (excluding processes): 36 - 48 µm, processes: 1.2 - 3.2 µm.

Comparison with other species:
This species is the only brown cyst species with a peridinioid form that has irregular distally expanded spines/processes restricted to the two cingular rims. The process length and width can vary within the species.