NDLI: Re-investigation of Mimetaster hexagonalis: a marrellomorph arthropod from the Lower Devonian Hunsrück Slate (Germany)

Content Provider	Springer Nature Link
Author	Kühl, Gabriele Rust, Jes
Copyright Year	2010
Abstract	The arthropod Mimetaster hexagonalis Gürich, 1931 from the Lower Devonian Hunsrück Slate (Germany) is re-described. With 123 available individuals, M. hexagonalis is the most abundant non-trilobite arthropod from this Lagerstätte. New (as well as old) specimen material shows new morphological features of M. hexagonalis. The ontogeny is described based on three juvenile specimens. The growth mode is similar to that in the marrellomorph Vachonisia rogeri Lehmann, 1955. The number of trunk segments increases from juvenile to adult. The mode of life of the arthropod is re-considered. The arthropod is considered to live in groups of several individuals. A mutualistic relationship with sponges of unknown systematic affinities is most likely. An ecological interaction with tentaculitoids is recognized but needs further investigation. The phylogenetic position of M. hexagonalis as a member of the Marrellomorpha is confirmed, but remains to be explored within the broader frame of euarthropod phylogeny.Der Arthropode Mimetaster hexagonalis Gürich, 1931 aus dem unterdevonischen Hunsrückschiefer (Deutschland) wird neu beschrieben. Mit rund 123 verfügbaren Exemplaren ist M. hexagonalis der häufigste (ausgenommen Trilobiten) Arthropode aus dieser Lagerstätte. Neues sowie bereits bekanntes Fossilmaterial zeigt neue morphologische Merkmale von M. hexagonalis. Die Ontogenie konnte anhand von drei Exemplaren beschrieben werden. Der Wachstumsmodus ähnelt dem marrellomorphen Vachonisia rogeri, Lehmann, 1955. Die Anzahl der Rumpfsegmente steigt von juvenilen zu adulten Stadien an. Die Lebensweise des Arthropoden ist ebenfalls neu betrachtet. Der Arthropode hat wahrscheinlich in Gruppen mit mehreren Individuen gelebt. Eine mutualistische Beziehung zu nicht näher bestimmbaren Schwämmen ist sehr wahrscheinlich. Eine Interaktion mit Tentakulitoiden konnte nachgewiesen werden, bedarf aber weiterer wissenschaftlicher Untersuchungen. Die phylogenetische Position von M. hexagonalis als ein Vertreter der Marrellomorpha ist bestätigt, wird aber in einem breiteren Rahmen der Phylogenie der Euarthropoden weiter erforscht.
Starting Page	397
Ending Page	411
Page Count	15
File Format	PDF
ISSN	00310220
Journal	Paläontologische Zeitschrift
Volume Number	84
Issue Number	3
e-ISSN	18676812
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-01-19
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mimetaster hexagonalis Marrellomorpha Unteres Devon Hunsrückschiefer Symbiose Paleontology
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

Dehmicystis globulus, an enigmatic solute (Echinodermata) from the Lower Devonian Hunsrück Slate, Germany

New observations on some poorly known protasterid ophiuroids from the Lower Devonian Hunsrück Slate of Germany

The acanthodianMachaeracanthus from the Lower Devonian Hunsrück Slate of the Hunsrück region (Germany)

Name change for the diplobathrid camerate crinoid Acanthocrinus spinosus Südkamp 2007 from the lower Devonian Hunsrück Slate (Germany)

Erratum to: The arthropod Bundenbachiellus giganteus from the Lower Devonian Hunsrück Slate, Germany

Redescription of the cyathocrinid cladid Codiacrinus schultzei Follmann, 1887 from the Lower Devonian Hunsrück Slate at Bundenbach (Germany)

First record of eurypterids (Chelicerata, Eurypterida) from the Lower Devonian (Lower Emsian) Hunsrück Slate (SW Germany)

Preservation of tube feet in an ophiuroid (Echinodermata) from the Lower Devonian Hunsrück Slate of Germany and a redescription ofBundenbachia beneckei andPalaeophiomyxa grandis

Erratum to: The arthropod Bundenbachiellus giganteus from the Lower Devonian Hunsrück Slate, Germany

Re-investigation of Mimetaster hexagonalis: a marrellomorph arthropod from the Lower Devonian Hunsrück Slate (Germany)

Similar Documents

Dehmicystis globulus, an enigmatic solute (Echinodermata) from the Lower Devonian Hunsrück Slate, Germany

New observations on some poorly known protasterid ophiuroids from the Lower Devonian Hunsrück Slate of Germany

The acanthodianMachaeracanthus from the Lower Devonian Hunsrück Slate of the Hunsrück region (Germany)

Name change for the diplobathrid camerate crinoid Acanthocrinus spinosus Südkamp 2007 from the lower Devonian Hunsrück Slate (Germany)

Erratum to: The arthropod Bundenbachiellus giganteus from the Lower Devonian Hunsrück Slate, Germany

Redescription of the cyathocrinid cladid Codiacrinus schultzei Follmann, 1887 from the Lower Devonian Hunsrück Slate at Bundenbach (Germany)

First record of eurypterids (Chelicerata, Eurypterida) from the Lower Devonian (Lower Emsian) Hunsrück Slate (SW Germany)

Preservation of tube feet in an ophiuroid (Echinodermata) from the Lower Devonian Hunsrück Slate of Germany and a redescription ofBundenbachia beneckei andPalaeophiomyxa grandis

Erratum to: The arthropod Bundenbachiellus giganteus from the Lower Devonian Hunsrück Slate, Germany

Re-investigation of Mimetaster hexagonalis: a marrellomorph arthropod from the Lower Devonian Hunsrück Slate (Germany)