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support these conclusions. Marek
Lewandowski presented a series of
palaeogeographic maps for Gondwana,
Baltica, and Laurentia for the early Ordovician
- early Permian time span. Tatiana
Modzalevskaya reported on similar isotopic
signatures in Ludlow brachiopods from the
Timan-Pechora region and Gotland; Tiiu Märss
added that the carbon isotope curve found by
her student, T. Martma, in sections from
Baillie-Hamilton and Cornwallis islands is very
similar. Peep Männik contributed conodont
age data for the Canadian island sections,
and recognized two Telychian conodont
faunal provinces - one connected with
northern and northeastern parts of Baltica
and Laurentia, and the other with the
southeastern parts of the same
palaeocontinents.
Timan-Pechora Workshop
Topics discussed:
*the state of studies of Lower-Middle
Palaeozoic strata in the region;
*publication;
*IGCP 406 future meeting in Syktyvkar
and excursions to the Timan-Pechora
region, July 2000.
During recent decades extensive geological
studies (palaeontology, sedimentology,
mineralogy, geochemistry etc.) have been
carried out in the Timan-Pechora region. Many
outcrops and core sections were studied in
detail. Conferences and field-meetings (e.g.
1983, 1987), many papers and monographic
studies have been published (T. Beznosova)
or prepared (A. Abushik and L.
Shamsutdinova; S. Melnikov in press) -
unfortunately, almost all in Russian. All
participants agreed that the main task now is
to publish in English. To begin with, 4-5
papers dealing with general problems of
Silurian and Devonian palaeontology,
stratigraphy, sedimentology and
palaeogeography will be published at the end
of 1999 in Estonia (in the Proceedings of the
Estonian Academy of Sciences, Geology
Series). Also, some authors are thinking
about the possibility of re-publishing their
monographs in English. As the Timan-Pechora
region is one of the easiest, and least
expensive of the Arctic regions to reach, and
as the Palaeozoic strata are well exposed
and studied there, it was chosen as best
region for the last IGCP 406 field meeting.
The specialists working in the region
accepted this suggestion enthusiastically and
preparations began - see Circulars of the
meeting "Palaeozoic pan-Arctic Tectonics,
and Evolution of Basins and Fauna"
Syktyvkar, Russia, July 12-15, 2000 (CAPV-
2000)(see web site).
Workshop on Early Fossil Record of
Chondrichthyans
This attracted many scientists and graduate
students with interests in early fossil
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chondrichthyans, including several who had
not previously participated in IGCP 406
meetings. Participants had the opportunity to
examine brought specimens as well as the
microvertebrate collections of the Geology
Institute, Warsaw. Technical papers were
presented; examples being Hanke and Wilson
on a diverse assemblage of acanthodian-like
chondrichthyans and chondrichthyan-like
acanthodians from the Lochkovian MOTH
locality in northern Canada; Karatajute-
Talimaa and Mertiniene on morphogenetic
types of Devonian and Carboniferous
chondrichthyan scales. Undoubted Devonian
chondrichthyans were presentedby M.
Williams, K. Trinajstic, and C. Derycke; and
Late Palaeozoic chondrichthyans by A.
Ivanov, R. Soler-Gijon, O. Hampe, and G.
Johnson.
New Working Group:
Early and Middle Palaeozoic Basins in the
Circum-Arctic Region: Palaeotectonics and
Palaeogeography
V.V. Menner and P. Männik proposed this
working group at the business meeting. The
new group's objective would give special
attention to comparative analysis of data from
different parts of the Circum-Arctic region,
with the aim of reconstructing the
palaeogeographical situation, and to
evaluating and improving palaeotectonic
reconstructions.
Studies would focus in the following
directions:
1. Improvement of global correlations of
Silurian and Devonian sequences (based on
detailed studies of some selected intervals,
particularly of the series boundaries).
2. Comparative analysis of the evolution of
the Silurian and Devonian sedimentary basins
in Canada, Greenland, NE Europe (Timan-
Pechora region) and the northern part of
central Siberia.
3. Comparison of associations of Silurian and
Devonian faunas (brachiopods, ostracodes,
conodonts, vertebrates, etc.) from different
palaeobasins in the Circum-Arctic region.
4. Improvement of biogeographical
subdivision of the studied regions.
5. Evaluation and improvement of
palaeotectonic reconstructions.
A more detailed program is found on the web
site; as of September 1999, however, little
interest had been shown. Please contact
organisers of you wish to participate.
*************************************
IGCP 406 1999 Meeting, Jurmala,
Latvia
The 1999 Annual Meeting of IGCP 406 was
held in September, in connection with the 4th
Baltic Stratigraphical Association in Jurmala,
near Riga, Latvia. The meeting was ably co-
organised by members of the Latvian
University, Dr Ervins Lukseviks and team.
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