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Spiniferites belerius
Zonneveld, K.A.F. and Pospelova V. (2015). A determination key for modern dinoflagellate cysts. Palynology 39 (3), 387- 407.
Field characteristics
Spiniferites belerius Reid 1974
Field characteristics:
Proximochorate cyst of pear shape, with a pronounced apical boss. The cysts have a thin smooth wall. Tabulation is expressed by low clear septa that sometimes form crests. Processes gonal and trifurcate. Septa can form at the antapical a trumpet shaped antapical process. Archeopyle is precingular (type P).
Dimensions: Cyst body: 28 - 37 (width) to 35 - 42 (length) µm; length of processes: 7 - 10 µm. Posterior process: 10- 15 µm
Motile affinity: not known.
Stratigraphic range: Late Quaternary? - Recent.
Comparison with other species:
S. belerius most closely resembles S. bentorii as both are pear shaped and have an apical boss. It differs from P. bentorii in being smaller. It differs from the other Spiniferites species in having a combination of an apical protuberance and a pear shape.
Field characteristics:
Proximochorate cyst of pear shape, with a pronounced apical boss. The cysts have a thin smooth wall. Tabulation is expressed by low clear septa that sometimes form crests. Processes gonal and trifurcate. Septa can form at the antapical a trumpet shaped antapical process. Archeopyle is precingular (type P).
Dimensions: Cyst body: 28 - 37 (width) to 35 - 42 (length) µm; length of processes: 7 - 10 µm. Posterior process: 10- 15 µm
Motile affinity: not known.
Stratigraphic range: Late Quaternary? - Recent.
Comparison with other species:
S. belerius most closely resembles S. bentorii as both are pear shaped and have an apical boss. It differs from P. bentorii in being smaller. It differs from the other Spiniferites species in having a combination of an apical protuberance and a pear shape.