________________________________________________________________________________________
GRAPTOLITE NET
is edited by
Piotr Mierzejewski, the Count of Calmont
since 2002
Melanostrophus signum Öpik, 1930
Graptolithoidea incertae sedis
Melanostrophus signum Ă–pik.
Holotype. Diameter ca. 0.3 mm.
From Ă–pik, 1930.
Melanostrophus signum    was described from the Ordovician
of Kohtla, Estonia, by A.A. Ă–pik on the basis of a single specimen.

'[...]
Melanostrophus signum Ă–pik could be interpreted as follows
(for illustrations see
Ă–pik 1930: pl:3: 3 or Howell 1962:104, fig.
14): the plate-like fragment of the fossil was an initial part of the
colony and its tubular irregular offshoots were more but
graptovermid, i.e. resting stolothecae' (Mierzejewski 1988, p. 270).
According to
Mierzejewski & Urbanek (2003) this species should be
treated as
nomen dubium. Unfortunately, the holotype and only
specimen of this species is lost. Nevertheless,
Zessin and
Puttkamer (1994) separated it in a new stolonoid genus
(
Stolonofolliculis) and allocated it to the new family
(Stolonofolliculidae) of the order
Stolonoidea.

Melanostrophus fokini from the Ordovician of Estonia was
recognized as a cephalodiscid? hemichordate by
Mierzejewski &
Urbanek, 2004.
updated July 27, 2013