Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
New early Cambrian sclerites of Lapworthella schodakensis from NE Greenland: advancements in knowledge of lapworthellid taxonomy, sclerite growth and scleritome organization
Naturhistoriska riksmuseet, Enheten för paleobiologi.ORCID-id: 0000-0001-7366-7680
2017 (engelsk)Inngår i: Geological Magazine, ISSN 0016-7568, E-ISSN 1469-5081, Vol. 154, nr 5, s. 1061-1072Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The Cambrian Stage 4 upper Bastion Formation of Albert Heim Bjerge and CH Ostenfeld Nunatak, NE Greenland, yielded 34 excellently preserved sclerites of Lapworthella schodackensis among other small shelly fossils. Lapworthellids have been interpreted as members of the camenellans,a basal tommotiid group. Little is known about this group although the morphological andultrastructural features of their sclerites allow a potential reconstruction of a lophophorate body plan.The exquisite material from Greenland provides significant new data for the revision of the species taxonomy, but also for the comprehension of the scleritome structure of lapworthellids and the modeof formation of their sclerites. Two morphotypes of L. schodackensis sclerites are identified: one with asimple apex, occurring in sinistral and dextral forms; and one bilaterally symmetrical sclerite with twoapices. All bear a similar ornamentation constructed of repeated growth sets consisting of a reticulate inter-rib groove with tubercles, a densely denticulate rib and a striated sub-rib area. The new data onthe ornamentation and observations of the laminar shell microstructure of L. schodackensis enable us to improve the reconstruction of growth in lapworthellids. Finally, the morphological features of the two types of sclerites provide new information for the reconstruction of the bilaterally symmetrical multi-component lapworthellid scleritome with evidence of the fusion of adjacent sclerites duringearly ontogeny.

sted, utgiver, år, opplag, sider
2017. Vol. 154, nr 5, s. 1061-1072
Emneord [en]
Lapworthellid, tommotiid, sclerite, Cambrian, Laurentia
HSV kategori
Forskningsprogram
Livets mångfald
Identifikatorer
URN: urn:nbn:se:nrm:diva-2467DOI: 10.1017/S0016756816000698OAI: oai:DiVA.org:nrm-2467DiVA, id: diva2:1147110
Prosjekter
Ett grunt ursprung
Forskningsfinansiär
EU, FP7, Seventh Framework Programme, SYNTHESYSgrant SE-TAF-4164Swedish Research Council, VR2016-04610Tilgjengelig fra: 2017-10-04 Laget: 2017-10-04 Sist oppdatert: 2017-11-27bibliografisk kontrollert

Open Access i DiVA

fulltext(5596 kB)305 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 5596 kBChecksum SHA-512
27576861ef689866f3c477e3a384153e71659e6aef9ac93ed0e2f057992f4a40be19024670765c2fff5cba42363f8c258368f531f6cd98ea12b47d766e7baebd
Type fulltextMimetype application/pdf

Andre lenker

Forlagets fulltekst

Søk i DiVA

Av forfatter/redaktør
Skovsted, Christian
Av organisasjonen
I samme tidsskrift
Geological Magazine

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 305 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 131 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf