Ageria Abbass 1973
Ageria sp. Figs 29 F–G Material. A moderately well preserved external and internal mould (MGUH 33229), which may be mislaid, and a poorly preserved external mould MGUH 33230. Occurrence. Lithified top of the Højerup Member of the Maastrichtian Tor Formation at Rødvig and Holtug Quarry, Stevns Klint....
Main Author: | |
---|---|
Format: | Text |
Language: | unknown |
Published: |
Zenodo
2019
|
Subjects: | |
Online Access: | https://dx.doi.org/10.5281/zenodo.5582885 https://zenodo.org/record/5582885 |
id |
ftdatacite:10.5281/zenodo.5582885 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.5281/zenodo.5582885 2023-05-15T18:02:59+02:00 Ageria Abbass 1973 Hansen, Thomas 2019 https://dx.doi.org/10.5281/zenodo.5582885 https://zenodo.org/record/5582885 unknown Zenodo http://zenodo.org/record/3365803 http://publication.plazi.org/id/43218E4BA900FFE52B0BC14DFFA9FFE3 http://zoobank.org/CFD82CC0-3110-472E-972B-7ADC0C523A04 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/zootaxa.4654.1.1 http://zenodo.org/record/3365803 http://publication.plazi.org/id/43218E4BA900FFE52B0BC14DFFA9FFE3 https://dx.doi.org/10.5281/zenodo.3442114 http://zoobank.org/CFD82CC0-3110-472E-972B-7ADC0C523A04 https://dx.doi.org/10.5281/zenodo.5582886 https://zenodo.org/communities/biosyslit Open Access info:eu-repo/semantics/openAccess Biodiversity Taxonomy Animalia Mollusca Gastropoda Neotaenioglossa Procerithiidae Ageria Text Taxonomic treatment article-journal ScholarlyArticle 2019 ftdatacite https://doi.org/10.5281/zenodo.5582885 https://doi.org/10.11646/zootaxa.4654.1.1 https://doi.org/10.5281/zenodo.3442114 https://doi.org/10.5281/zenodo.5582886 2021-11-05T12:55:41Z Ageria sp. Figs 29 F–G Material. A moderately well preserved external and internal mould (MGUH 33229), which may be mislaid, and a poorly preserved external mould MGUH 33230. Occurrence. Lithified top of the Højerup Member of the Maastrichtian Tor Formation at Rødvig and Holtug Quarry, Stevns Klint. Description. Protoconch not known. Teleoconch whorls flattened, relatively high, the height corresponding to about 60 % of width, separated by shallow suture. Keel on last whorl very sharp, delineated adapically by wide furrow. Base strongly flattened. Aperture subrectangular, slightly flaring with two low spiral folds on outer lip. Teleoconch sculpture changing with growth; initial whorls carrying about 14 coarse, slightly opisthocline transverse ribs fading out towards sutures; ribs terminating abapically towards weak spiral rib delineating beaded keel. Transverse ribs fading out on later whorls, being replaced by three beaded spiral ribs; adapical keel ramp carrying three weak spiral threads. Growth lines opisthocyrt and slightly opisthocline. Measurements. Teleoconch on disappeared specimen at least 11.2 mm high and 3.7 mm wide, consisting of nine whorls. Remarks. Ageria sp. resembles Ageria gankinensis Kaim et al ., 2004 from the Late Maastrichtian of Siberia, but differs by the denser sculpture with three instead of two primary beaded spiral ribs adapical to the keel. It seems to differ from Ageria skeldervigensis n. sp. described above from the same deposits by the relatively high whorls and extremely sharp keel, but a very limited material prevents any definite conclusions as the differences could reflect ecophenotypic variation. : Published as part of Hansen, Thomas, 2019, Gastropods from the Cretaceous-Palaeogene boundary in Denmark, pp. 1-196 in Zootaxa 4654 (1) on page 126, DOI: 10.11646/zootaxa.4654.1.1, http://zenodo.org/record/3365803 : {"references": ["Kaim, A., Beisel, A. L. & Kurushin, N. I. (2004) Mesozoic gastropods from Siberia and Timan (Russia). Part 1: Vetigastropoda and Caenogastropoda (exclusive of Neogastropoda). Polish Polar Research, 25, 241 - 266."]} Text Polish Polar Research Siberia DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Mollusca Gastropoda Neotaenioglossa Procerithiidae Ageria |
spellingShingle |
Biodiversity Taxonomy Animalia Mollusca Gastropoda Neotaenioglossa Procerithiidae Ageria Hansen, Thomas Ageria Abbass 1973 |
topic_facet |
Biodiversity Taxonomy Animalia Mollusca Gastropoda Neotaenioglossa Procerithiidae Ageria |
description |
Ageria sp. Figs 29 F–G Material. A moderately well preserved external and internal mould (MGUH 33229), which may be mislaid, and a poorly preserved external mould MGUH 33230. Occurrence. Lithified top of the Højerup Member of the Maastrichtian Tor Formation at Rødvig and Holtug Quarry, Stevns Klint. Description. Protoconch not known. Teleoconch whorls flattened, relatively high, the height corresponding to about 60 % of width, separated by shallow suture. Keel on last whorl very sharp, delineated adapically by wide furrow. Base strongly flattened. Aperture subrectangular, slightly flaring with two low spiral folds on outer lip. Teleoconch sculpture changing with growth; initial whorls carrying about 14 coarse, slightly opisthocline transverse ribs fading out towards sutures; ribs terminating abapically towards weak spiral rib delineating beaded keel. Transverse ribs fading out on later whorls, being replaced by three beaded spiral ribs; adapical keel ramp carrying three weak spiral threads. Growth lines opisthocyrt and slightly opisthocline. Measurements. Teleoconch on disappeared specimen at least 11.2 mm high and 3.7 mm wide, consisting of nine whorls. Remarks. Ageria sp. resembles Ageria gankinensis Kaim et al ., 2004 from the Late Maastrichtian of Siberia, but differs by the denser sculpture with three instead of two primary beaded spiral ribs adapical to the keel. It seems to differ from Ageria skeldervigensis n. sp. described above from the same deposits by the relatively high whorls and extremely sharp keel, but a very limited material prevents any definite conclusions as the differences could reflect ecophenotypic variation. : Published as part of Hansen, Thomas, 2019, Gastropods from the Cretaceous-Palaeogene boundary in Denmark, pp. 1-196 in Zootaxa 4654 (1) on page 126, DOI: 10.11646/zootaxa.4654.1.1, http://zenodo.org/record/3365803 : {"references": ["Kaim, A., Beisel, A. L. & Kurushin, N. I. (2004) Mesozoic gastropods from Siberia and Timan (Russia). Part 1: Vetigastropoda and Caenogastropoda (exclusive of Neogastropoda). Polish Polar Research, 25, 241 - 266."]} |
format |
Text |
author |
Hansen, Thomas |
author_facet |
Hansen, Thomas |
author_sort |
Hansen, Thomas |
title |
Ageria Abbass 1973 |
title_short |
Ageria Abbass 1973 |
title_full |
Ageria Abbass 1973 |
title_fullStr |
Ageria Abbass 1973 |
title_full_unstemmed |
Ageria Abbass 1973 |
title_sort |
ageria abbass 1973 |
publisher |
Zenodo |
publishDate |
2019 |
url |
https://dx.doi.org/10.5281/zenodo.5582885 https://zenodo.org/record/5582885 |
genre |
Polish Polar Research Siberia |
genre_facet |
Polish Polar Research Siberia |
op_relation |
http://zenodo.org/record/3365803 http://publication.plazi.org/id/43218E4BA900FFE52B0BC14DFFA9FFE3 http://zoobank.org/CFD82CC0-3110-472E-972B-7ADC0C523A04 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/zootaxa.4654.1.1 http://zenodo.org/record/3365803 http://publication.plazi.org/id/43218E4BA900FFE52B0BC14DFFA9FFE3 https://dx.doi.org/10.5281/zenodo.3442114 http://zoobank.org/CFD82CC0-3110-472E-972B-7ADC0C523A04 https://dx.doi.org/10.5281/zenodo.5582886 https://zenodo.org/communities/biosyslit |
op_rights |
Open Access info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5281/zenodo.5582885 https://doi.org/10.11646/zootaxa.4654.1.1 https://doi.org/10.5281/zenodo.3442114 https://doi.org/10.5281/zenodo.5582886 |
_version_ |
1766173678089797632 |