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Nõlvak & Bauert, G., 2015

Nõlvak, J., Bauert, G. 2015. New biostratigraphically important chitinozoans from the Kukruse Regional Stage, Upper Ordovician of Baltoscandia. Estonian Journal of Earth Sciences 64 (3), 218-224. PDF | DOI | DETAILS

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ID4470
ReferenceNõlvak & Bauert, G., 2015
AuthorNõlvak, J., Bauert, G.
Year2015
TitleNew biostratigraphically important chitinozoans from the Kukruse Regional Stage, Upper Ordovician of Baltoscandia
JournalEstonian Journal of Earth Sciences
Volume64
Number3
pgs.218-224
Source typearticle in journal
LanguageEnglish
DOI10.3176/earth.2015.28
Abstract

Three new chitinozoan species, Conochitina savalaensis, Conochitina viruana and Belonechitina intonsa, are described. All these species are stratigraphically restricted to the Kukruse age (lowermost Sandbian, Laufeldochitina stentor chitinozoan Zone) and have been recorded in numerous East Baltic sections as well as from NE Poland and NW Ukraine and Sweden. Their short temporal range and relative abundance point to a great biostratigraphical value for regional correlations near the base of the Upper Ordovician. 


New taxa described

RankTaxon nameBelongs to
SpeciesBelonechitina intonsa Nõlvak et Bauert, 2015Belonechitina
SpeciesConochitina savalaensis Nõlvak et Bauert, 2015Conochitina
SpeciesConochitina viruana Nõlvak et Bauert, 2015Conochitina

Sections studied or mentioned

Localitypgs.Figs.Remarks
Kerguta 565 borehole218-2241Chitinozoans of Kukruse stage
Savala borehole218-224113.45-26.6 m (Chitinozoans of Kukruse stage)

Photos

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<i><i>Conochitina viruana</i></i><br />Saare K20 borehole, 109.60 m, Kukruse Stage (718-5) <i><i>Conochitina viruana</i></i><br />Saare K20 borehole, 109.60 m, Kukruse Stage (718-7) <i><i>Conochitina viruana</i></i><br />Velise V-97 borehole, 209.20 m, Kukruse Stage (718-4) <i><i>Conochitina viruana</i></i><br />Saare K20 borehole, 108.40 m, Kukruse Stage (718-6) <i><i>Conochitina viruana</i></i><br />Saare K20 borehole, 109.60 m, Kukruse Stage (718-5) <i><i>Conochitina viruana</i></i><br />Saare K20 borehole, 108.40 m, Kukruse Stage (718-6) <i><i>Conochitina viruana</i></i><br />Velise V-97 borehole, 209.20 m, Kukruse Stage (718-4) <i><i>Conochitina savalaensis</i> | </i><br />Saare K20 borehole, 110.00 m, Kukruse Stage (718-3) <i><i>Conochitina savalaensis</i> | </i><br />Vihterpalu 1103 borehole, 34.30 m, Kukruse Stage (718-2) <i><i>Conochitina savalaensis</i> | </i><br />Viki borehole, 342.70 m, Kukruse Stage (718-1) <i><i>Belonechitina intonsa</i></i><br />Kerguta 565 borehole, 157.10 m, Kukruse Stage (544-41) <i><i>Belonechitina intonsa</i></i><br />Kerguta 565 borehole, 157.10 m, Kukruse Stage (544-41) <i><i>Belonechitina intonsa</i></i><br />Kerguta 565 borehole, 157.10 m, Kukruse Stage (544-41) <i><i>Belonechitina intonsa</i></i><br />Saare K20 borehole, 109.20 m, Kukruse Stage (718-13) <i><i>Belonechitina intonsa</i></i><br />Männamaa F-367 borehole, 168.10 m, Kukruse Stage (718-10) <i><i>Belonechitina intonsa</i></i><br />Männamaa F-367 borehole, 168.10 m, Kukruse Stage (718-11) <i><i>Belonechitina intonsa</i></i><br />Vihterpalu 1103 borehole, 32.00 m, Kukruse Stage (718-12) <i><i>Belonechitina intonsa</i></i><br />Männamaa F-367 borehole, 168.10 m, Kukruse Stage (718-10) <i><i>Belonechitina intonsa</i></i><br />Männamaa F-367 borehole, 168.10 m, Kukruse Stage (718-11) <i><i>Conochitina</i> | Conochitina cf. viruana</i><br />Virtsu F-309 borehole, 248.30 m, Kukruse Stage (718-9) <i><i>Conochitina savalaensis</i></i><br />Viljandi 91 borehole, 373.80 m, Kukruse Stage (660-1666) <i><i>Conochitina savalaensis</i></i><br />Viljandi 91 borehole, 373.80 m, Kukruse Stage (660-1666) <i><i>Conochitina savalaensis</i></i><br />Rapla borehole, 166.50 m, Kukruse Stage (660-1440) <i><i>Conochitina savalaensis</i></i><br />Rapla borehole, 166.50 m, Kukruse Stage (660-1440) <i><i>Conochitina savalaensis</i></i><br />Viljandi 91 borehole, 373.80 m, Kukruse Stage (660-1666) <i><i>Conochitina savalaensis</i></i><br />Rapla borehole, 166.50 m, Kukruse Stage (660-1440) <i><i>Conochitina viruana</i></i><br />Velise V-97 borehole, 209.20 m, Kukruse Stage (718-8)