Genus

Cystostroma Galloway et St. Jean, 1957Galloway & St. Jean, 1957

Images
GIT 113-1
Cystostroma estoniense | Cystostroma estoniense Nestor, 1964
Pirgu Stageholotype
GIT 113-80
Cystostroma estoniense | Cystostroma estoniense Nestor, 1964
Pirgu Stage
GIT 166-1
Cystostroma insuetum | Cystostroma insuetum Nestor, 1976
Sandbian | Krivolutski Stage holotype
GIT 166-100
Cystostroma evenkiense | Cystostroma evenkiense Nestor, 1976
Upper Ordovician | Dolborski ldj
GIT 166-105
Cystostroma evenkiense | Cystostroma evenkiense Nestor, 1976
Upper Ordovician | Dolborski ldj
GIT 166-106
Cystostroma evenkiense | Cystostroma evenkiense Nestor, 1976
Upper Ordovician | Dolborski ldj
GIT 166-2
Cystostroma insuetum | Cystostroma insuetum Nestor, 1976
| Krivolutski Stage
paratype
GIT 166-265
Cystostroma evenkiense | Cystostroma evenkiense Nestor, 1976
Upper Ordovician | Dolborski ldj
GIT 166-3
Cystostroma insuetum | Cystostroma insuetum Nestor, 1976
Sandbian | Krivolutski Stage paratype
GIT 166-4
Cystostroma insuetum | Cystostroma insuetum Nestor, 1976
| Krivolutski Stage
paratype