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Australia; Alain Blieck
(Univ. Lille) et al.the
Devonian to Early Carboniferous of the Carnic Alps; and
Claire Derycke (Univ. Lille) the Devonian
of
Mauritania.
These microvertebrate
studies have resulted mostly from
earlier
IGCP
328
work
and
from sequential sampling
associated with refined biochronological conodont
investigations, the exception being the Mauritanian study
where fish were found as a result of a review of Devonian
chonetid brachiopods.
Tamara
Nemyrovska
(Ukrainian Acad.
Sciences,
Kiev)
presented phylogenetic data
on Gnathodus bilineatus
from the Rheinisches Schiefergebirge. Then came the
Carboniferous: Glenn Merrill (Univ. Houston) presented
biostratigraphic analysis of
Neognathodusand Peter
von Bitter (Roy. Ontario
Museum,
Toronto)
reconstructed
Gondolellafrom
Illinois. The moveable feast then shifted location to the
University of Modena.
Cooler conditions prevailed
and the last day began with a large batch of papers
concerning Ordovician
conodont
faunas. Tatania Tolmacheva
(VSEGEI, St Petersberg) reported on basinal Upper Cambrian
to Middle Ordovician conodont
clusters.
Jerzy
Dzik (Pol. Acad. Sciences,
Warszawa) reported on Ordovician
climate
modelling
on
conodont data from the Holy
Cross Mountains. Chris Barnes (Univ. Victoria) drew together
a vast array of circum Laurentian Late Ordovician conodont
data
into
a
regional
biofacies synthesis. Oliver
Lehnert (Univ.
Erlangen- Nürnberg)
reported
on
middle
Ordovician faunas from
Argentina. Stig Bergström (Ohio State Uni.) reported on
some Late Middle Ordovician
conodonts
from
Norway
with Laurentian affinities;
this
palaeogeographic anomaly
indicated
the
potential
of geochemical studies
(particularly neodymium) in unravelling puzzles of
provinciality. Sven Stouge (Geol. Surv. Denmark and
Greenland) considered the
suprageneric
taxonomy
of some Ordovician
lineages.
John
Talent
and
Ruth
Mawson (Macquarie
Uni.,
Sydney)
presented Carboniferous
conodont
data
from northeastern
Australia
permitting
some stratigraphic
realignments. Anna Somersville (Univ. College, Dublin)
showed three upper Viséan
sections
from
Ireland;
Tamara Nemyrovska
(Ukrainian
Academy
of Sciences, Kiev) on faunas
from the Donets Basin,
Ukraine,
and
Alexander
Alekseev (Moscow State Uni.)
on faunas
from
the Moscow Basin. The final
offering was from Bruce Wardlaw (U.S.G.S.) on Permian faunas
from the Salt Range, Pakistan. Heinz Kozur (Budapest)
reported the Permo-Triassic biotic crisis. Selan Meco (Univ.
Politeknik, Tirana) covered the Triassic of Albania and Mike
Orchard (Geol. Surv., Canada) reviewed on Triassic
multielement gondolellids.
The final session returned
to the palaeobiological
theme.
Richard
Krejsa (California
Polytech.) expressed his biological concerns about basal
bodies. Kim Freedman
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(Univ. Leicester) discussed
the taphonomy and function of the
Promissumapparatus.
Phil Donoghue (Univ. Birmingham) resolved the
paradox
of
growth
and
function
in conodont elements with a
study of internal discontinuities. Mark Purnell (Univ.
Leicester) built on knowledge of form and function of
conodont apparatuses to undertake a broad trophic analysis.
Karsten Weddige (Forsch. Senckenberg)
produced
a
"scissor
and basket"
model
for
Lower
Devonian spathognathodid
apparatuses.
In many ways this ECOS was
one of consolidation of the primary biochronologic utility
of
conodonts.
There
were
a
large number of high quality
poster presentations mostly covering biostratigraphic
issues, but also including
biofacies
analysis,
thermal analysis,
palaeobiology and palaeogeography. Unlike some previous ECOS
conferences that have sparked
a
revolution
in
scientific thinking
about
conodonts
and
generated passionate debate
both during and outside of scientific
sessions
(such
as
multielement taxonomy - ECOS
1, zoological affinities - ECOS 4), or held out promise of
new insights through
geochemistry
(ECOS
5),
this conference was
dominated by the traditional applications of conodontology.
This is not to say that ECOS 7 was any less significant than
previous events. Quite the opposite, in fact,
as
the
vast
array
of
new
data demonstrates
the
intrinsic
international strength
of
modern
conodont
research. Conference
organisers
are
to
be congratulated
for
developing
a
scientific program that
showed how conodont research continues
to
gather
momentum
across
a broad
range
of
geological
and
biological applications.
The
organisers
were
also responsible for
producing a social program that can only be described as
breath taking in scope and style. This program acted as an
excellent catalyst
for
collaborative international
communication and will be a hard act to follow for future
ECOS organisers.
The
IGCP421
project
meeting benefited enormously
through its concurrence with ECOS 7. Nine of the 108
conference abstracts, principally those dealing with other
fossil groups, were specifically marked as exclusive
contributions to IGCP421. The vast majority of the papers
presented, however, were directly relevant to IGCP421
project outcomes as they
dealt with high-resolution Palaeozoic biochronology and
inter-regional correlations of direct relevance to the north
Gondwana margin. This project continues to generate an
enormous volume of data and foster the international
collaboration essential for the ambitious synthesis to
follow.
See also
the
British
Micropalaeontological Society
Newsletter (
http://www.nhm.ac.uk/hosted_sites/bms/,
reports in
Geochronique(by
Catherine Girard and Marie-France Perret) and in
Nachrichten Deutsche
Geologische
Gesellschaft(by
Dieter Stoppel).
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