Disentangling the origin of chemical differences using GHOST
Conodont
1. Institute of Geology
Komi Science Center
Ural Division of the Russian Academy of
Sciences
Late Devonian – Early Carboniferous
conodonts of deepwater deposits
Author Plotitsyn
A.N. Scientific supervisor D.Sc.(Geol.& Min.) Beznosova T.M.
Laboratory of stratigraphy
5. Each organism had a set of morphologically distinct
conodont elements
(A) Dorsal view of the reconstructed, closed apparatus of Novispathodus.(B)
Orientation of the apparatus within the conodont’s head
6. Christian Heinrich Pander (1794–1865),
first researcher of conodonts.
First described by Christian H.
Pander in 1859 from clays near St.
Petersburg, Russia.
He originally thought that they
were a variety of small fish teeth.
Afterwards there were a lot of
different hypotheses concerning
conodonts. For example:
- agnatha;
- annelids;
- nematode worms;
- clams;
- arthropoda;
- coelenterate;
- seaweed;
and etc.
By the early 70s only two
hypotheses were considered to be the
most probable which substantiate the
propinquity between conodonts and
polychaeta worms and chordates.
7. Relevance
Upper Devonian and Lower Carboniferous conodonts are
widespread at the Urals and in the matter of biota abundance and
stratigraphic completeness play a great role for fauna evolution,
patterns cognition, biostratigraphy issues clarification, regional and
international zonal scales correlation and also for bounds delimitation
between Devon and Carbon. At the research area deep facies deposits
are poorly characterized by faunal remains. Conodonts are one of the
main groups of fauna which is suitable for biostratigraphy and
correlation of Upper Devonian and Lower Carboniferous sediments.
Their geographical spread and fast evolution give us an opportunity to
compare researched deep-water sections with standard and basic
different facies sections on a regional, interregional and even
intercontinental level. Conodont sequence creation for this very facial
type of sediments within North Urals region is necessary to determine
the level of regional boundary between Devon and Carbon.
8. The main objective of the research is to
investigate conodonts of the Devonian (Famennian) and
Carboniferous (Tournaisian) deposits. For the objective
achievement the following tasks should be solved:
• Consider systematic composition of the conodont
fauna and conduct biofacial analysis.
• Discover zonal conodont sequence in deepwater
sediments and reveal the location of the bound between
Devon and Carbon.
• Identify the boundaries of regional events and a scope
of a Hangenberg global geological event (HGGE) in
Subpolar and Polar Urals sections.
