Lotagnostus? : mystacinus, a rare agnostid from the Upper Cambrian of Sweden
(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)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3450705
- author
- Ahlberg, Per LU and Ahlgren, John
- organization
- publishing date
- 2000
- 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
- 2016-04-01 16:45:38
- date last changed
- 2022-01-28 21:55:55
@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}}, keywords = {{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}}, url = {{http://app.pan.pl/archive/published/app45/app45-091.pdf}}, volume = {{45}}, year = {{2000}}, }