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Vagrant benthos (Annelida; Polychaeta) associated with Upper Ordovician carbonate mud-mounds of subsurface Gotland, Sweden.

Eriksson, Mats LU and Hints, Olle (2009) In Geological Magazine 146(3). p.451-462
Abstract
Micropalaeontological investigations of Upper Ordovician carbonate mud-mounds and enclosing strata of subsurface Gotland, Sweden, demonstrate that jaw-bearing polychaetes formed the most diverse faunal element associated with these build-ups. Although not present within the mound cores (intra-mound facies), scolecodonts, or polychaete jaws, occur abundantly immediately below and particularly above the mounds; the supra-mound facies also has the most diverse fossil assemblages. By contrast to the scolecodont distribution, the most diverse conodont faunas were recorded in the intra-mound facies. This reinforces the fact that scolecodont and conodont abundance and diversity numbers are commonly inverse to one another, suggesting that these... (More)
Micropalaeontological investigations of Upper Ordovician carbonate mud-mounds and enclosing strata of subsurface Gotland, Sweden, demonstrate that jaw-bearing polychaetes formed the most diverse faunal element associated with these build-ups. Although not present within the mound cores (intra-mound facies), scolecodonts, or polychaete jaws, occur abundantly immediately below and particularly above the mounds; the supra-mound facies also has the most diverse fossil assemblages. By contrast to the scolecodont distribution, the most diverse conodont faunas were recorded in the intra-mound facies. This reinforces the fact that scolecodont and conodont abundance and diversity numbers are commonly inverse to one another, suggesting that these metazoans occupied different niches and responded differently to taphonomical processes. The polychaete assemblage has no less than 27 species belonging to 12 genera, of which Oenonites, Mochtyella and Pistoprion are the most abundant. The assemblage has a characteristic Baltic signature and is similar in taxonomic composition to coeval ones from other areas of the Baltoscandian palaeobasin, such as that of present-day Estonia. A principal component analysis clusters the Gotland assemblage most closely to those recorded from shallow to transitional shelf environments of Estonia, indicatino that the mud-mounds were formed in such environments. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
benthos, scolecodonts, polychaete jaws, mud-mounds, Upper Ordovician, Gotland, Sweden
in
Geological Magazine
volume
146
issue
3
pages
451 - 462
publisher
Cambridge University Press
external identifiers
  • WOS:000265767000010
  • Scopus:70349217251
ISSN
0016-7568
DOI
10.1017/S0016756809005962
language
English
LU publication?
yes
id
f90a6af4-806b-479a-8aed-6da2ad9e305e (old id 1397511)
date added to LUP
2011-07-14 09:25:41
date last changed
2016-10-13 04:40:27
@misc{f90a6af4-806b-479a-8aed-6da2ad9e305e,
  abstract     = {Micropalaeontological investigations of Upper Ordovician carbonate mud-mounds and enclosing strata of subsurface Gotland, Sweden, demonstrate that jaw-bearing polychaetes formed the most diverse faunal element associated with these build-ups. Although not present within the mound cores (intra-mound facies), scolecodonts, or polychaete jaws, occur abundantly immediately below and particularly above the mounds; the supra-mound facies also has the most diverse fossil assemblages. By contrast to the scolecodont distribution, the most diverse conodont faunas were recorded in the intra-mound facies. This reinforces the fact that scolecodont and conodont abundance and diversity numbers are commonly inverse to one another, suggesting that these metazoans occupied different niches and responded differently to taphonomical processes. The polychaete assemblage has no less than 27 species belonging to 12 genera, of which Oenonites, Mochtyella and Pistoprion are the most abundant. The assemblage has a characteristic Baltic signature and is similar in taxonomic composition to coeval ones from other areas of the Baltoscandian palaeobasin, such as that of present-day Estonia. A principal component analysis clusters the Gotland assemblage most closely to those recorded from shallow to transitional shelf environments of Estonia, indicatino that the mud-mounds were formed in such environments.},
  author       = {Eriksson, Mats and Hints, Olle},
  issn         = {0016-7568},
  keyword      = {benthos,scolecodonts,polychaete jaws,mud-mounds,Upper Ordovician,Gotland,Sweden},
  language     = {eng},
  number       = {3},
  pages        = {451--462},
  publisher    = {ARRAY(0xafd2fc8)},
  series       = {Geological Magazine},
  title        = {Vagrant benthos (Annelida; Polychaeta) associated with Upper Ordovician carbonate mud-mounds of subsurface Gotland, Sweden.},
  url          = {http://dx.doi.org/10.1017/S0016756809005962},
  volume       = {146},
  year         = {2009},
}