NDLI: The systematic position of the Euomphalidae (Gastropoda)

Content Provider	Springer Nature Link
Author	Bandel, Klaus Frýda, Jiřý
Copyright Year	1998
Abstract	The core group of Euomphalidae with the generaEuomphalus, Straparollus, Serpulospira, Phymatifer, Schizostoma, Nodeuomphalus n. g. (Devonian to Permian) are characterized by a cyrtoconic, openly coiled, planispiral protoconch. This character distinguishes them from members of the four extant subclasses of the Gastropoda (Archaeogastropoda, Neritimorpha, Caenogastropoda and Heterostropha) and places the Euomphaloidea at a similarly high taxonomic level, the new subclass Euomphalomorpha. WithEuomphalopsis the group may have made its first appearance in the Late Cambrian, and it is certainly present from the Mid Devonian to Late Permian and thus the range is about 300 million years in duration. Throughout the existence of the Euomphaloidea other gastropod units developed convergent shell forms which can be detected by the morphology of the protoconch and, in well preserved fossils, the mineralogical and structural composition of the shell. The new taxa Euomphalomorpha n. subclassis,Nodeuomphalus n. g.,N. paffrathianus n. sp., and“Planerotinus” scheeri n. sp. are described.Den Kernbereich der Familie Euomphalidae stellen die GattungenEuomphalus, Straparollus, Serpulospira, Phymatifer, Schizostoma undNodeuomphalus aus dem Zeitraum Devon bis Perm. Sie werden durch einen Protoconch gekennzeichnet, der mit einer eiförmigen Anfangskalotte ausgestattet ist, an die sich eine erste offene Windung anschließt. Dadurch verbleibt eine zentrale Öffnung im Inneren der ersten planspiraligen Windung sichtbar im Apex der Schale. Dieser Protoconch unterscheidet die neue Unterklasse Euomphalomorpha von den auch heute noch existenten Unterklassen der Gastropoda, den Archaeogastropoda, Neritimorpha, Heterostropha und Caenogastropoda. MitEuomphalopsis war möglicherweise schon im späten Kambrium ein Vertreter der Euomphalomorpha present. Vertreter der Gruppe sind vom Mitteldevon bis zum späten Perm gesichert nachzuweisen. Schon seit dem Ordovizium treten innerhalb anderer Gastropoden-Taxa konvergente Arten auf, so daß nur bei einer Erhaltung des Protoconches, oder auch der Schalenstruktur, Euomphalomorpha gesichert erkannt werden können. Die neuen Taxa Euomphalomorpha n. subclassis,Nodeuomphalus n. g.,N. paffrathianus n. sp., and„Planerotinus“ scheeri n. sp. werden beschrieben.
Starting Page	103
Ending Page	131
Page Count	29
File Format	PDF
ISSN	00372110
Journal	Palaeobiodiversity and Palaeoenvironments
Volume Number	78
Issue Number	1-2
Language	German
Publisher	Springer-Verlag
Publisher Date	1998-01-01
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Gastropoda Euomphalidae taxonomy protoconch Paleozoic Paleontology Biodiversity Animal Systematics/Taxonomy/Biogeography Plant Systematics/Taxonomy/Biogeography Freshwater & Marine Ecology
Content Type	Text
Resource Type	Article
Subject	Paleontology

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Dr. Wolfgang Struve

Comments on the systematic position of the putative Lower Eocene parrotPulchrapollia gracilis

Claus-Dieter Clausen : (13.01. 1937–21.05.2007)

Das bibliographische Lebenswerk von Dr. Wolfgang struve

Anmerkungen zur Devon-Korrelationstabelle, B141dm97: Rugosa; Eifel

Anmerkungen zur Devon-Korrelationstabelle, B140di97 – B140dm97: Tabulata; Eifel

Anmerkungen zur Devon-Korrelationstabelle, B094ds97: Ostracoden-Zonen, Thüringer Ökotyp

Anmerkungen zur Devon-Korrelationstabelle, B200ds97: Radiolarien-Zonierungen im Devon

Anmerkungen zur Devon-Korrelationstabelle, R058di00 – R060ds00: Kellerwald (Rheinisches Schiefergebirge)

The systematic position of the Euomphalidae (Gastropoda)

Similar Documents

Dr. Wolfgang Struve

Comments on the systematic position of the putative Lower Eocene parrotPulchrapollia gracilis

Claus-Dieter Clausen : (13.01. 1937–21.05.2007)

Das bibliographische Lebenswerk von Dr. Wolfgang struve

Anmerkungen zur Devon-Korrelationstabelle, B141dm97: Rugosa; Eifel

Anmerkungen zur Devon-Korrelationstabelle, B140di97 – B140dm97: Tabulata; Eifel

Anmerkungen zur Devon-Korrelationstabelle, B094ds97: Ostracoden-Zonen, Thüringer Ökotyp

Anmerkungen zur Devon-Korrelationstabelle, B200ds97: Radiolarien-Zonierungen im Devon

Anmerkungen zur Devon-Korrelationstabelle, R058di00 – R060ds00: Kellerwald (Rheinisches Schiefergebirge)

The systematic position of the Euomphalidae (Gastropoda)