liik
Conochitina rugata Nõlvak, 2007
Taksoni kirjeldused
Nõlvak, 2007a
The vesicle is cylindrical, with straight to slightly convex flanks and tapers towards the aperture. Shoulders and flexure are absent or very weakly developed and the neck, if present, is about 1/3 of the total length of the vesicle. The maximum width is just above the rounded aboral margin. The ridges, sometimes anastomosing, are well developed longitudinally over the whole vesicle. However, the inner surface of the vesicle wall is glabrous. The convex base, provided with a pronounced copula, has also a weak ornamentation.
Tüüpeksemplari andmed
holotüüp: Department of Geology, TalTech GIT 190-8, Põltsamaa H-39 puurauk, Pirgu lade , core depth 125 m
Sünonüümika
2007 Conochitina rugata sp. n. — Nõlvak , lk. 63-64, joon. 1a-c
Valik taksonit käsitlevast teaduskirjandusest
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. 2010. Distribution of Ordovician chitinozoans. Estonian Geological Sections Bulletin 10, 17-18.
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.
Esinemine proovides (CONOP)
Männamaa F-367 puurauk : 1 proov(i)
Orjaku puurauk : 4 proov(i)
Ristiküla 174 puurauk : 2 proov(i)
Valga 10 puurauk : 5 proov(i)
Tartu 453 puurauk : 9 proov(i)
Viki puurauk : 3 proov(i)
Viljandi 91 puurauk : 1 proov(i)
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Klassifikatsioon
Levik kirjandusandmetel
- Nõlvak, 2010a Viki puurauk Pirgu lade
- Nõlvak, 2007a Põltsamaa H-39 puurauk Pirgu lade