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| Order Dendroidea, Family: Pseudodictyonemidae Pseudodictyonema heyi Chapman, Rickards & Grayson, 1993 |
Diagnosis: "Large conical colony, at least 110 mm by
100mm, with undulating robust stipes, subparallel
and united by common but irregular disspiments and
irregular anastomosis. Stipes compound, spaced at
6-8 in 10mm and difining a fairly regular meshwork
together with stipe branching and connections
(either dissepiments or anastomosis) at a spacing of
1-3 in 10mm."
From Chapman, Rickards & Grayson, 1993.
Occurence: Dinantian - Namurian of Britain. The
last known British graptolite.
See also:
Diagrammatic illustrations of Dictyonema. >>
100mm, with undulating robust stipes, subparallel
and united by common but irregular disspiments and
irregular anastomosis. Stipes compound, spaced at
6-8 in 10mm and difining a fairly regular meshwork
together with stipe branching and connections
(either dissepiments or anastomosis) at a spacing of
1-3 in 10mm."
From Chapman, Rickards & Grayson, 1993.
Occurence: Dinantian - Namurian of Britain. The
last known British graptolite.
See also:
Diagrammatic illustrations of Dictyonema. >>
| Source: THE CARBONIFEROUS DENDROID GRAPTOLITES OF BRITAIN AND IRELAND. - A.J. Chapman, R.B. Rickards and R.F. Grayson - Proceedings of the Yorkshire Geological Society 1993, 49, 4, 295-319. |
| Holotype. Richmond, Yorkshire. Scale bar 0.5cm. |
| Edited by Piotr Mierzejewski, the Count of Calmont and Countess Maja A. Korwin-Kossakowska since 2002 |
