Portal of Graptolites and Pterobranchs sponsored by M.M. PLUS M. SZTANDARY
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. >>
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.