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Lotagnostus? : mystacinus, a rare agnostid from the Upper Cambrian of Sweden

Ahlberg, Per LU and Ahlgren, John (2000) In Acta Palaeontologica Polonica 45(1). p.91-96
Abstract
Agnostids afford the best means of correlating Cambrian strata, and they are widely used for intercontinental correlations. They are most common in open-marine deposits and reached a maximum diversity during the Middle and early Late Cambrian. About twenty species of agnostids are known from the Upper Cambrian of Scandinavia. Lotagnostus? mystacinus Tjernvik, 1953 is a rare agnostid from the Upper Cambrian Agnostus pisiformis Zone of south-central Sweden. It is redescribed following examination of the holotype and an additional pygidium. The outline and morphology of especially the pygidial posteroaxis, which is distinctly trilobate by a pair of deep notular furrows, suggest that the species is best classified as a species of Lotagnostus.... (More)
Agnostids afford the best means of correlating Cambrian strata, and they are widely used for intercontinental correlations. They are most common in open-marine deposits and reached a maximum diversity during the Middle and early Late Cambrian. About twenty species of agnostids are known from the Upper Cambrian of Scandinavia. Lotagnostus? mystacinus Tjernvik, 1953 is a rare agnostid from the Upper Cambrian Agnostus pisiformis Zone of south-central Sweden. It is redescribed following examination of the holotype and an additional pygidium. The outline and morphology of especially the pygidial posteroaxis, which is distinctly trilobate by a pair of deep notular furrows, suggest that the species is best classified as a species of Lotagnostus. If correctly assigned to Lotagnostus, it would be the oldest known species of that genus. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
cambrian, morphology, phylogeny, taxonomy, Sweden, Agnostida, Trilobita
in
Acta Palaeontologica Polonica
volume
45
issue
1
pages
91 - 96
publisher
Instytut Paleobiologii PAN
external identifiers
  • scopus:0034096487
ISSN
0567-7920
language
English
LU publication?
yes
id
4a139947-1c2d-46ab-9a2c-e3b34f8ebed7 (old id 3450705)
alternative location
http://app.pan.pl/archive/published/app45/app45-091.pdf
date added to LUP
2013-03-15 17:20:58
date last changed
2017-01-01 07:14:23
@article{4a139947-1c2d-46ab-9a2c-e3b34f8ebed7,
  abstract     = {Agnostids afford the best means of correlating Cambrian strata, and they are widely used for intercontinental correlations. They are most common in open-marine deposits and reached a maximum diversity during the Middle and early Late Cambrian. About twenty species of agnostids are known from the Upper Cambrian of Scandinavia. Lotagnostus? mystacinus Tjernvik, 1953 is a rare agnostid from the Upper Cambrian Agnostus pisiformis Zone of south-central Sweden. It is redescribed following examination of the holotype and an additional pygidium. The outline and morphology of especially the pygidial posteroaxis, which is distinctly trilobate by a pair of deep notular furrows, suggest that the species is best classified as a species of Lotagnostus. If correctly assigned to Lotagnostus, it would be the oldest known species of that genus.},
  author       = {Ahlberg, Per and Ahlgren, John},
  issn         = {0567-7920},
  keyword      = {cambrian,morphology,phylogeny,taxonomy,Sweden,Agnostida,Trilobita},
  language     = {eng},
  number       = {1},
  pages        = {91--96},
  publisher    = {Instytut Paleobiologii PAN},
  series       = {Acta Palaeontologica Polonica},
  title        = {Lotagnostus? : mystacinus, a rare agnostid from the Upper Cambrian of Sweden},
  volume       = {45},
  year         = {2000},
}