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Modern Dinocyst Key
brown cysts
round brown with septa, reticulation, double wall
reticulate cysts
transparent cysts
brown cysts
species list
Cyst of Gymnodinium microreticulatum
Cyst of Gymnodinium nolleri
Cyst of Gymnodinium catenatum
Modern Dinocyst Key
reticulate cysts
Zonneveld, K.A.F. and Pospelova V. (2015). A determination key for modern dinoflagellate cysts. Palynology 39 (3), 387- 409.
large cyst > 36 μm
archeopyle split along cingulum
more than 4 paravesicle rows in cingulum
cyst of
Gymnodinium catenatum
+
small cyst 17 - 28 μm
split archeopyle in apical position
less than 4 paravesicle rows in cingulum
cyst of
Gymnodinium microreticulatum
+
intermediate cyst 28 - 38 μm
archeopyle split along cingulum
less than 4 paravesicle rows in cingulum
cyst of
Gymnodinium nolleri
+
pale-brown elogate cyst
pale brown elongate cyst
sulcus and cingulum reflected
chasmic archeopyle
cyst of
Gymnodinium trapeziforme
+