Graptolithoidea: Order Cephalodiscoidea
A postage stamp with portrait of
Professor Roman Kozłowski
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Graptolite Net
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Eocephalodiscus polonicus Kozłowski, 1949
Eocephalodiscus polonicus is the oldest fossil
member of the extant order
Cephalodiscoidea. It was
described by Professor
Roman Kozłowski from  upper
Tremadocian chalcedony beds exposed in the outcrop
of Wysoczki, Poland. This locality has been world
famous since Kozlowski's (1938, 1949) investigations
of the fundamental importance on the
Graptolithoidea.
As a result of these studies he recognized some fifty
new species of benthic graptolites, representing the
order Dendroidea and three new orders, i.e. the
Stolonoidea, Camaroidea, and Tuboidea, as well as
some other hemichordate-like groups (Acanthastida,
Graptoblasti, and Graptovermida) difficult to place
taxonomically.

To the right you can see the holotype in five views
(from Kozlowski 1949).

Uncertain remains of the Silurian
Eocephalodiscus
were described by
Chapman, Durman & Rickards.
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Related pages

Pterobranchites from the Ordovician of Poland

Melanostrophus - a Cephalodiscus -like pterobranch from the
Ordovician.

Cephalodiscus lutetianus from the Eocene of France.
updated July 14, 2005