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  Estonian Journal of Earth Sciences

ISSN 1736-7557 (electronic)  ISSN 1736-4728 (print)
An international scientific journal

Formerly: Proceedings of the Estonian Academy of Sciences, Geology
Published since 1952

Estonian Journal of Earth Sciences

ISSN 1736-7557 (electronic)  ISSN 1736-4728 (print)
An international scientific journal

Formerly: Proceedings of the Estonian Academy of Sciences, Geology
Published since 1952

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A new chitinozoan species from the Middle Ordovician of Estonia; pp. 131–132

(Full article in PDF format)   doi: 10.3176/earth.2012.2.05


Authors

Jaak Nõlvak

Abstract

A new species Baltochitina delicata is formally defined. This rare species has been identified in the Aseri Regional Stage (Darriwilian) in North Estonian sections. The genus Baltochitina was known so far only by a single species B. nolvaki, which occurs in the Lasnamägi Regional Stage (Darriwilian) of Estonia. The restricted range of both species points to their stratigraphical utility and suggests that Baltochitina belongs to endemic Baltica fauna.

Keywords

chitinozoans, Middle Ordovician, Darriwilian, Baltica.

References

Eisenack , A. 1931. Neue Mikrofossilien des baltischen Silurs , I. Palaeontologische Zeitschrift , 13 , 74–118.

Eisenack , A. 1972. Beiträge zur chitinozoen forschung. Palaeontographica A , 140 , 117–130.

Nõlvak , J. 2010. Distribution of Ordovician chitinozoans. In Viki Drill Core (Põldvere , A. , ed.) , Estonian Geological Sections , 10 , 17–18 , App. 6.

Nõlvak , J. & Grahn , Y. 1993. Ordovician chitinozoan zones from Baltoscandia. Review of Palaeobotany and Palynology , 79 , 245–269.
http://dx.doi.org/10.1016/0034-6667(93)90025-P

Paris , F. 1981. Les Chitinozoaires dans le Paléozoique du Sud-Ouest de l'Europe (Cadre géologique Etude systématique – Biostratigraphie). Mémoires de la Société géologique et minéralogique de Bretagne , 26 , 1–496.

Paris , F. , Grahn , Y. , Nestor , V. & Lakova , I. 1999. A revised chitinozoan classification. Journal of Paleontology , 73 , 549–570.

Põldvere , A. & Nestor , H. 2010. General geological setting and stratigraphy. In Viki Drill Core (Põldvere , A. , ed.) , Estonian Geological Sections , 10 , 6–16.

Tammekänd , M. , Hints , O. & Nõlvak , J. 2010. Chitinozoan dynamics and biostratigraphy in the Väo Formation (Darriwilian) of the Uuga Cliff , Pakri Peninsula , NW Estonia. Estonian Journal of Earth Sciences , 59 , 25–36.
http://dx.doi.org/10.3176/earth.2010.1.02

 
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Current Issue: Vol. 63, Issue 4, 2014




Publishing schedule:

No. 1: 20 March
No. 2: 20 June
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