Class

Chitinozoa Eisenack, 1931

Chitinozoans

Selection of related publications
Männik, R. 2024. Siluri ajastu Lau sündmuse mõju mikrofossiilidele Bebirva 111 puuraugus Leedus [Bakalaureusetöö. Juhendajad: O. Hints ja T. Meidla]. pp. 1-54.
Hints, O., Ainsaar, L., Lepland, A., Liiv, M., Männik, P., Meidla, T., Nõlvak, J., Radzevičius, S. 2023. Paired carbon isotope chemostratigraphy across the Ordovician–Silurian boundary in central East Baltic: Regional and global signatures. Palaeogeography, Palaeoclimatology, Palaeoecology 624, 1-17. DOI:10.1016/j.palaeo.2023.111640
Nõlvak, J., Liang, Y., Hints, O. 2023. Latest Ordovician age of the Spinachitina fragilis Chitinozoan Biozone in Baltoscandia. Estonian Journal of Earth Sciences 72, 1, 82-85. DOI:10.3176/earth.2023.51
Nõlvak, J., Liang, Y., Hints, O. 2022. Early and early Middle Ordovician chitinozoans from the Baldone drill core, central Latvia. Estonian Journal of Earth Sciences 71, 1, 25-43. DOI:10.3176/earth.2022.03
Liang, Y., Nõlvak, J., Xu, H., Chen, Y., Hints, O. 2022. Revision of Ordovician chitinozoan Lagenochitina esthonica sensu lato: morphometrics, biostratigraphy and paleobiogeography. Journal of Paleontology 96, 1, 46-60. DOI:10.1017/jpa.2021.79
Wang, W., Liang, Y., Lyu, Q., Hints, O., Chen, S., Nõlvak, J. 2021. Chitinozoans with “skirt”: Ultrastructure and palaeoecological implications of carina in Cyathochitina Eisenack, 1955. Palaeogeography, Palaeoclimatology, Palaeoecology 570, 110348. DOI:10.1016/j.palaeo.2021.110348
Liang, Y., Hints, O., Tang, P., Cai, C., Goldman, D., Nõlvak, J., Tihelka, E., Pang, K., Bernardo, J., Wang, W. 2020. Fossilized reproductive modes reveal a protistan affinity of Chitinozoa. Geology 48, 12, 1200-1204. DOI:10.1130/G47865.1
Nõlvak, J., Liang, Y., Hints, O. 2019. Early diversification of Ordovician chitinozoans on Baltica: New data from the Jägala waterfall section, northern Estonia. Palaeogeography, Palaeoclimatology, Palaeoecology 525, 14-24. DOI:10.1016/j.palaeo.2019.04.002
Stouge, S., Bauert, G., Bauert, H., Nõlvak, J., Rasmussen, J. A. 2016. Upper Middle to lower Upper Ordovician chitinozoans and conodonts from the Bliudziai-150 core, southern Lithuania. Canadian Journal of Earth Sciences 53, 8, 781-787. DOI:10.1139/cjes-2015-0205
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. DOI:10.3176/earth.2015.28
Goldman, D., Nõlvak, J., Maletz, J. 2015. Middle to Late Ordovician graptolite and chitinozoan biostratigraphy of the Kandava-25 drill core in western Latvia. GFF 137, 3, 197-211. DOI:10.1080/11035897.2015.1021375
Männik, P., Loydell, D. K., Nestor, V., Nõlvak, J. 2015. Integrated Upper Ordovician–lower Silurian biostratigraphy of the Grötlingbo-1 core section, Sweden. GFF 137, 3, 226-244. DOI:10.1080/11035897.2015.1042032
Bauert, G., Nõlvak, J., Bauert, H. 2014. Chitinozoan biostratigraphy in the Haljala Regional Stage, Upper Ordovician: a high-resolution approach from NE Estonia. GFF 136, 1, 26-29. DOI:10.1080/11035897.2013.857715
Pouille, L., Delabroye, A., Vandenbroucke, T. R. A., Calner, M., Lehnert, O., Vecoli, M., Danelian, T. 2013. Chitinozoan biostratigraphy across the Katian (Late Ordovician) GICE event in the Borenshult-1 drillcore (Sweden). Review of Palaeobotany and Palynology 198, 134-144. DOI:10.1016/j.revpalbo.2013.05.007
Nõlvak, J. 2012. A new chitinozoan species from the Middle Ordovician of Estonia. Estonian Journal of Earth Sciences 61, 2, 131-132. DOI:10.3176/earth.2012.2.05
Nestor, V. 2012. A summary and revision of the East Baltic Silurian chitinozoan biozonation. Estonian Journal of Earth Sciences 61, 4, 242-260. DOI:10.3176/earth.2012.4.05
Nestor, V. 2011. Chitinozoan biostratigraphy of the Přidoli Series of the East Baltic. Estonian Journal of Earth Sciences 60, 4, 191-206. DOI:10.3176/earth.2011.4.01
Nõlvak, J. 2010. Distribution of Ordovician chitinozoans. Estonian Geological Sections Bulletin 10, 17-18.
Nestor, V. 2010. Distribution of Silurian chitinozoans. Estonian Geological Sections Bulletin 10, 19-20.
Loydell, D. K., Nestor, V., Männik, P. 2010. Integrated biostratigraphy of the lower Silurian of the Kolka-54 core, Latvia. Geological Magazine 147, 2, 253-280. DOI:10.1017/S0016756809990574
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, 1, 25-36. DOI:10.3176/earth.2010.1.02
Grahn, Y., Nõlvak, J. 2010. Swedish Ordovician Chitinozoa and biostratigraphy: a review and new data. Palaeontographica 283, 1-3, 5-71. DOI:10.1127/palb/283/2010/5
Nestor, V. 2009. Biostratigraphy of the Ludlow chitinozoans from East Baltic drill cores. Estonian Journal of Earth Sciences 58, 3, 170-184. DOI:10.3176/earth.2009.3.02
Nõlvak, J. 2008. Distribution of Ordovician chitinozoans. Estonian Geological Sections Bulletin 9, 13-18. Geological Survey of Estonia.
Kaljo, D., Hints, L., Männik, P., Nõlvak, J. 2008. The succession of Hirnantian events based on data from Baltica: brachiopods, chitinozoans, conodonts, and carbon isotopes. Estonian Journal of Earth Sciences 57, 4, 197-218. DOI:10.3176/earth.2008.4.01
Nõlvak, J. 2007. A new chitinozoan species from the Upper Ordovician of the East Baltic. Estonian Journal of Earth Sciences 56, 1, 63-64.
Grahn, Y., Nõlvak, J. 2007. Ordovician Chitinozoa and biostratigraphy from Skåne and Bornholm, southernmost Scandinavia - an overview and update. Bulletin of Geosciences 82, 1, 11-26. DOI:10.3140/bull.geosci.2007.01.11
Nestor, V. 2007. Chitinozoans in the Wenlock-Ludlow boundary beds of the East Baltic. Estonian Journal of Earth Sciences 56, 2, 109-128.
Rubel, M., Hints, O., Männik, P., Meidla, T., Nestor, V., Sarv, L., Sibul, I. 2007. Lower Silurian biostratigraphy of the Viirelaid core, western Estonia. Estonian Journal of Earth Sciences 56, 4, 193-204. DOI:10.3176/earth.2007.01
Goldman, D., Leslie, S. A., Nõlvak, J., Young, S. 2007. The Black Knob Ridge section, southeastern Oklahoma, USA: The global stratotype-section and point (GSSP) for the base of Katian Stage of the Upper Ordovician series. Acta Palaeontologica Sinica 46, Suppl, 144-154.
Grahn, Y., Nõlvak, J. 2007. Remarks on older Ordovician Chitinozoa and biostratigraphy of the Oslo Region, southern Norway. GFF 129, 2, 101-106. DOI:10.1080/11035890701292101
Hints, O., Killing, M., Männik, P., Nestor, V. 2006. Frequency patterns of chitinozoans, scolecodonts, and conodonts in the upper Llandovery and lower Wenlock of the Paatsalu core, western Estonia. Proceedings of the Estonian Academy of Sciences. Geology 55, 2, 128-155. DOI:10.3176/GEOL.2006.2.04
Nõlvak, J., Bauert, G. 2006. Distribution of Ordovician chitinozoans. Estonian Geological Sections Bulletin 7, 9-11. Geological Survey of Estonia.
Hints, O., Nõlvak, J. 2006. Early Ordovician scolecodonts and chitinozoans from Tallinn, North Estonia. Review of Palaeobotany and Palynology 139, 1-4, 189-209. DOI:10.1016/j.revpalbo.2006.01.004
Põldvere, Anne (ed) 2006. Kerguta (565) drill core. Estonian Geological Sections Bulletin 7, 1-43. Geological Survey of Estonia.
Nestor, V. 2005. Chitinozoans of the Margachitina margaritana Biozone and the Llandovery-Wenlock boundary in West Estonian drill cores. Proceedings of the Estonian Academy of Sciences. Geology 54, 2, 87-111. DOI:10.3176/geol.2005.2.02
Loydell, D. K., Nestor, V. 2005. Integrated graptolite and chitinozoan biostratigraphy of the upper Telychian (Llandovery, Silurian) of the Ventspils D-3 core, Latvia. Geological Magazine 142, 4, 369-376. DOI:10.1017/S0016756805000531
Põldvere, Anne (ed) 2003. Ruhnu (500) drill core. Estonian Geological Sections Bulletin 5, 1-76. Geological Survey of Estonia.
Loydell, D. K., Männik, P., Nestor, V. 2003. Integrated biostratigraphy of the lower Silurian of the Aizpute-41 core, Latvia. Geological Magazine 140, 2, 205-229. DOI:10.1017/S0016756802007264
Nõlvak, J. 2003. Distribution of Ordovician chitinozoans. Estonian Geological Sections Bulletin 5, 23-25. Geological Survey of Estonia.
Märss, T. 2003. Distribution of Silurian agnathans and fish microremains. Estonian Geological Sections Bulletin 5, 14-15. Geological Survey of Estonia.
Mullins, G. L., Loydell, D. K. 2002. Integrated Lower Silurian chitinozoan and graptolite biostratigraphy of Buttington Brick Pit, Wales. Geological Magazine 139, 1, 89-96. Cambridge University Press. DOI:10.1017/S00167568010059
Sennikov, N. V., Obut, O. T. 2002. Testing the chitinozoan zonal succession according to the graptolite zonal scale (Ordovician, Gorny Altai and Moscow syneclise). Geologia i geofizika 5, 51-63.
Modliński, Z., Nõlvak, J., Szymanski, B. 2002. Chitinozoan biozonation of the Ordovician succession in the borehole Proniewicze IG 1 (NE Poland). Przegląd Geologiczny 50, 1, 67-74.
Nestor, H., Nestor, V. 2002. Upper Llandovery to middle Wenlock (Silurian) lithostratigraphy and chitinozoan biostratigraphy in southwestern Estonia and northermost Latvia. Proceedings of the Estonian Academy of Sciences. Geology 51, 2, 67-87. DOI:10.3176/geol.2002.2.01
Nestor, V., Einasto, R., Loydell, D. K. 2002. Chitinozoan biostratigraphy and lithological characteristics of the Lower and Upper Visby boundary beds in the Ireviken 3 section, Northwest Gotland. Proceedings of the Estonian Academy of Sciences. Geology 51, 4, 215-226. DOI:10.3176/geol.2002.4.02
Nõlvak, J. 2001. Distribution of chitinozoans. Estonian Geological Sections Bulletin 3, 8-10. Geological Survey of Estonia.
Nestor, V. 1999. Distribution of chitinozoans in the Llandovery of the Oslo region. Bollettino della Società Paleontologica Italiana 38, 2-3, 227-238.
Paris, F., Grahn., Y., Nestor, V., Lakova, I. 1999. A revised chitinozoan classification. Journal of Paleontology 73, 4, 549-570. DOI:10.1017/S0022336000032388
Paris, F., Nõlvak, J. 1999. Biological interpretation and paleobiodiversity of a cryptic fossil group: The “chitinozoan animal”. Geobios 32, 2, 315-324. DOI:10.1016/S0016-6995(99)80045-X
Nestor, V. 1998. Chitinozoan biofacies of late early Llandovery (Coronograptus cyphus) age in the East Baltic. Proceedings of the Estonian Academy of Sciences. Geology 47, 4, 219-228. DOI:10.3176/geol.1998.4.01
Grahn, Y., Nõlvak, J., Paris, F. 1996. Precise chitinozoan dating of Ordovician impact events in Baltoscandia. Journal of Micropalaeontology 15, 21-35.
Nõlvak, J., Meidla, T., Uutela, A. 1995. Microfossils in the Ordovician erratic boulders from Southwestern Finland. Bulletin of the Geological Society of Finland 67, 2, 3-26. DOI:10.17741/bgsf/67.2.001
Nestor, V. 1994. Early Silurian chitinozoans of Estonia and North Latvia. pp. 1-163. Estonian Academy Publishers.
Nõlvak, J., Grahn, Y. 1993. Ordovician chitinozoan zones from Baltoscandia. Review of Palaeobotany and Palynology 79, 245-269. DOI:10.1016/0034-6667(93)90025-P
Nestor, V. 1993. Chitinozoans at the Llandovery-Wenlock transition in the Jaagarahu core, Estonia. Proceedings of the Estonian Academy of Sciences. Geology 42, 4, 167-175. DOI:10.3176/geol.1993.4.04
Smelror, M. 1991. Palynomorphs from the Cyrtograptus centrifugus graptolite zone (Early Wenlock, Silurian), Bornholm. Bulletin of the Geological Society of Denmark 39, 2, 83-89. DOI:10.37570/bgsd-1991-39-02
Nestor, V. 1991. On the distribution of aberrant forms of chitinozoans in the Silurian of Estonia and West Latvia. Proceedings of the Estonian Academy of Sciences. Geology 40, 3, 96-99. DOI:10.3176/geol.1991.3.02
Nõlvak, J. 1990. Ordovician chitinozoans. Field Meeting Estonia 1990. An Excursion Guidebook, pp. 77-79. Estonian Academy of Sciences.
Nestor, V. 1990. Silurian chitinozoans. Field Meeting Estonia 1990. An Excursion Guidebook, pp. 80-83. Estonian Academy of Sciences.
Grahn, Y. 1984. Ordovician chitinozoa from Tallinn, northern Estonia. Review of Palaeobotany and Palynology 43, 1-3, 5-31. DOI:10.1016/0034-6667(84)90025-3
Nestor, V. 1984. Distribution of Chitinozoans in the Late Llandoverian Rumba Formation (Pentamerus Oblongus Beds) of Estonia. Review of Palaeobotany and Palynology 43, 1-3, 145-153. DOI:10.1016/0034-6667(84)90030-7
Nestor, V. 1982. New Wenlockian species of Conochitina from Estonia. Eesti NSV Teaduste Akadeemia Toimetised. Geoloogia / Известия Академии наук Эстонской ССР. Геология 31, 3, 105-111. DOI:10.3176/geol.1982.3.04
Nestor, V. 1982. New chitinozoans of the genera Ancyro-, Gotlando- and Sphaerochitina from the Wenlockian of Estonia. Eesti NSV Teaduste Akadeemia Toimetised. Geoloogia / Известия Академии наук Эстонской ССР. Геология 31, 4, 146-151. DOI:10.3176/geol.1982.4.04
Nestor, V. 1982. Chitinozoan zonal assemblages (Wenlock, Estonia). Silurian assemblages and biozones in the East Baltic region, pp. 84-96. Valgus.
Paris, F. 1981. Les Chitinozoaires dans le Paléozoïque de sud-ouest de l'Europe: cadre géologique, étude systématique, biostratigraphie. pp. 1-496. Rennes: Société géologique et minéralogique de Bretagne.
Nestor, V. 1980. New chitinozoan species from the Lower Llandoverian of Estonia. Eesti NSV Teaduste Akadeemia Toimetised. Geoloogia / Известия Академии наук Эстонской ССР. Геология 29, 3, 98-107. DOI:10.3176/geol.1980.3.02
Wrona, R. 1980. Upper Silurian - Lower Devonian Chitinozoa from the subsurface of southeastern Poland. Palaeontologia Polonica 41, 103-165.
Nestor, V. 1980. Middle Llandoverian Chitinozoans from Estonia. Eesti NSV Teaduste Akadeemia Toimetised. Geoloogia / Известия Академии наук Эстонской ССР. Геология 29, 4, 136-142. DOI:10.3176/geol.1980.4.03
Nõlvak, J. 1980. Chitinozoans in biostratigraphy of the northern East Baltic Ashgillian. A preliminary report. Acta Palaeontologica Polonica 25, 2, 253-260.
Männil, Ralf 1976. Distribution of graptoloids in the Ordovician carbonate rocks of the East Baltic area. Graptolites and Stratigraphy, pp. 105-118. Academy of Sciences of Estonian SSR. Institut of Geology.
Umnova, N. I. 1976. Structural types of the prosome and operculum in the association with genera and species of chitinozoans. Paleontological Journal 4, 393-405.
Laufeld, S. 1974. Silurian Chitinozoa from Gotland. Fossils and Strata 5, 1-130.
Laufeld, S. 1967. Caradocian Chitinozoa from Dalarna, Sweden. GFF 89, 3, 275-349. DOI:10.1080/11035896709448374
List of species
2. Ancyrochitina ancyrea (Eisenack, 1931) | Pirgu Stage→Jaagarahu Stage
3. Ancyrochitina ansarviensis Laufeld, 1974 | Adavere Stage→Jaani Stage
4. Ancyrochitina bifurcaspina Nestor, 1994 | Juuru Stage→Raikküla Stage
6. Ancyrochitina brevispinosa Eisenack, 1968 | Paadla Stage→Kuressaare Stage
7. Ancyrochitina clathrospinosa Eisenack, 1968 | Jaani Stage→Jaagarahu Stage
9. Ancyrochitina diabolus (Eisenack, 1937) | Paadla Stage→Kuressaare Stage
13. Ancyrochitina gutnica Laufeld, 1974 | Jaagarahu Stage→Paadla Stage
17. Ancyrochitina paulaspina Nestor, 1994 | Jaani Stage→Jaagarahu Stage
18. Ancyrochitina pedavis Laufeld, 1974 | Kuressaare Stage→Kaugatuma Stage
20. Ancyrochitina porrectaspina Nestor, 1994 | Adavere Stage→Jaani Stage
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Classification
Organism groupBiota
KingdomAnimalia
PhylumAgmata
incertae sedis
Annelida
Arthropoda
Brachiopoda
Bryozoa
Chordata
Cnidaria
Echinodermata
Hemichordata
Mollusca
Onychophora
Pogonophora
Porifera
Priapulida
SubphylumLophotrochozoa
ClassChitinozoa
OrderOperculatifera
Prosomatifera
Hyolithelminthida
See also