The genus Discoceras (Tarphyceratida, Cephalopoda; Ordovician) from Estonia and glacial erratics in north-central Europe
Author
Aubrechtová, Martina
Institute of Geology, Czech Academy of Sciences, Rozvojová 269, Prague, 16500, Czech Republic. & University of Tartu, Faculty of Science and Technology, Institute of Ecology and Earth Sciences, Department of Geology, Ravila 14 a, 50411 Tartu, Estonia.
aubrechm@gmail.com
Author
Korn, Dieter
Museum für Naturkunde, Leibniz-Institut für Evolutions-und Biodiversitätsforschung, Invalidenstrasse 43, 10115 Berlin, Germany.
dieter.korn@mfn.berlin
Author
Kröger, Björn
Finnish Museum of Natural History, University of Helsinki, P. O. Box 44, Fi- 00014, Finland.
bjorn.kroger@helsinki.fi
text
European Journal of Taxonomy
2026
2026-01-29
1036
1
54
https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3173/14109
journal article
314311
10.5852/ejt.2026.1036.3173
58eef89e-653a-483e-8d9e-1ac617c7d923
2118-9773
18479586
0784B061-33CD-498B-B6D6-5CA4CF5BC2E4
Table 16. Conch measurements, ratios and rates of Discoceras polonicum sp. nov.| specimen | dm | ww | wh | uw | ah | CWI | WWI | UWI | WER | IZR |
|---|
| MB.C.11992 | 72.7 | 21.2 | 23.1 | 33.1 | 23.1 | 0.29 | 0.92 | 0.45 | 2.15 | 0.00 |
|---|
| minus 90° | 61.3 | 18.2 | 20.6 | 26.2 | 20.6 | 0.30 | 0.88 | 0.43 | 2.27 | 0.00 |
|---|
| minus 180° | 49.5 | 15.0 | 16.5 | 21.4 | 16.5 | 0.30 | 0.91 | 0.43 | 2.24 | 0.00 |
|---|
| minus 270° | 40.7 | 13.0 | 14.5 | 16.8 | 14.5 | 0.32 | 0.89 | 0.41 | 2.42 | 0.00 |
|---|
| minus 360° | 33.1 | – | 11.6 | 13.1 | 11.6 | – | – | 0.40 | 2.38 | 0.00 |
|---|
| minus 450° | 26.2 | – | 9.4 | 9.3 | 9.4 | – | – | 0.35 | 2.43 | 0.00 |
|---|
| minus 540° | 21.4 | – | 8.3 | 6.7 | 8.3 | – | – | 0.31 | 2.66 | 0.00 |
|---|
| minus 630° | 16.8 | – | 7.4 | 4.2 | 7.4 | – | – | 0.25 | 3.20 | 0.00 |
|---|
| minus 720° | 13.1 | – | 6.1 | – | 6.1 | – | – | – | 3.48 | 0.00 |
|---|
| minus 810° | 9.4 | – | 5.2 | – | 5.2 | – | – | – | 4.97 | 0.00 |
|---|