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 3. Conch measurements, ratios and rates of Discoceras antiquissimum (Eichwald, 1842).| specimen | dm | ww | wh | uw | ah | CWI | WWI | UWI | WER | IZR |
|---|
| TAM G432:72 | 145 | 31 | 31 | – | 31 | 0.21 | 1.00 | v | 1.62 | – |
|---|
| TUG 1862-1 | 109 | 32 | 29.8 | 54.7 | – | 0.29 | 1.07 | 0.50 | 1.89 | – |
|---|
| MB.C.32314 | 118.3 | 30.5 | 27.7 | 65.7 | 27.7 | 0.26 | 1.10 | 0.56 | 1.71 | 0.00 |
|---|
| minus 180° | 86.8 | – | 24.9 | 42.1 | 24.5 | – | – | 0.48 | 1.94 | 0.02 |
|---|
| MB.C.11569 | 79.8 | 28.6 | 21.0 | 42.2 | 20.6 | 0.36 | 1.36 | 0.53 | 1.82 | 0.02 |
|---|
| minus 90° | 70.4 | 25.2 | 19.9 | 35.6 | – | 0.36 | 1.26 | 0.51 | – | – |
|---|
| minus 180° | 58.8 | – | 16.6 | 28.2 | – | – | – | 0.48 | – | – |
|---|