_____________________________________________________________________________________

E
dited by
Piotr Mierzejewski, the Count of Calmont and Countess Maja Anna Korwin-Kossakowska
2004
_________________________________________________________________________________________________________________
Graptolite Net |  Graptolites & Graptoliters |  Evolution of Graptolites |  Cephalodiscoidea |  Rhabdopleuroidea   |  Scolecodonts
ALGAL NATURE OF THE ORDOVICIAN PRESUMED POLYCHAETE EGGS

Piotr Mierzejewski

Acta Palaeontologica Polonica 36 (1): 83-86
R. Kozłowski (1974) reported
accumulations of organic vesicles from
Ordovician calcareous glacial bulders
found in Tertiary deposits in Poland. He
interpreted them as eggs of polychete
annelids (Polychaeta).
  KozĹ‚owski's material was reexamined
with TEM methods and reinterpreted as
presumably blue-green algae
(Cyanophyta) or Cyanobacteria.
  Each specimen, about 1 mm in size,
represents irregular accumulation o fine
(15-30 micrometers) vesicles.