Published March 26, 2025
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Table 2 in The coiled Middle Ordovician cephalopod genera Trocholites and Curtoceras (Tarphyceratida) from Baltoscandia and north-central Europe
Authors/Creators
- 1. Institute of Geology, Czech Academy of Sciences, Rozvojová 269, Prague, 16500, Czech Republic.
- 2. Museum für Naturkunde, Leibniz-Institut für Evolutions- und Biodiversitätsforschung, Invalidenstrasse 43, 10115 Berlin, Germany.
Description
Table 2. Parameters and ratios used for the description of the tarphyceratid specimens studied herein.
| Parameter [unit] | Abbrev. | Calculation |
|---|---|---|
| conch diameter [mm] | dm | – |
| whorl height [mm] | wh | – |
| whorl width [mm] | ww | – |
| umbilical width [mm] | uw | dm1−wh1−wh2 |
| apertural height [mm] | ah | dm1−dm2 |
| imprint zone [mm] | iz | wh 1 −ah |
| whorl expansion rate (outline) | WERdm | (dm / dm)2 1 2 |
| whorl expansion rate (apertural height) | WERah | [dm / (dm −ah)]2 1 1 |
| imprint zone rate | IZR | iz / wh |
| umbilical width index | UWI | uw / dm |
| conch width index | CWI | ww / dm |
| whorl width index | WWI | ww / wh |
Notes
Published as part of Aubrechtová, Martina & Korn, Dieter, 2025, The coiled Middle Ordovician cephalopod genera Trocholites and Curtoceras (Tarphyceratida) from Baltoscandia and north-central Europe, pp. 9 in European Journal of Taxonomy 982 on page 9, DOI: 10.5852/ejt.2025.982.2843, http://zenodo.org/record/15096341
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Related works
- Is part of
- Journal article: 10.5852/ejt.2025.982.2843 (DOI)
- Journal article: urn:lsid:plazi.org:pub:FF94FFC9DD09426633619D2C9759FFFB (LSID)
- Journal article: http://publication.plazi.org/id/FF94FFC9DD09426633619D2C9759FFFB (URL)
- Journal article: http://zenodo.org/record/15096341 (URL)
- Journal article: http://zoobank.org/00EDB7C3-98B6-4FF6-93C3-2B2DCF8FA3A9 (URL)