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THE PROBLEMATIC GENUS MOBERGELLA FROM THE LOWER CAMBRIAN OF THE BALTIC AREA
Abstract
An unusually well preserved phosphatic fauna has been found in boulders of Lower Cambrian conglomerate from Venenas, on the Skaggenas Peninsula in the Baltic Sea. The fauna is dominated by the problematic fossil Mobergella holsti (Moberg 1892). The present material shows that this form is composed of three separate taxionomical units, and two new species-M. radiolata n. sp. and M. turgida n. sp.-are introduced besides M. hoisti. The new evidence seems to discard entirely the theory that Mobergella has been a free-living organism of monoplacophoran type. Instead, the interpretation of the shell as the operculum of a tube-dwelling organism seems to be the most plausible one. The tube itself, however, has not been recovered.
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Mobergellids are low conical or disc-shaped calcium phosphate problematic fossils with evidence of accretionary growth and paired radiating (possibly, muscular) imprints on the interior side.
“Mobergellids are low conical or disc-shaped calcium phosphate problematic fossils with evidence of accretionary growth and paired radiating (possibly, muscular) imprints on the interior side”
From Chronology of early Cambrian biomineralization (2012) · cites this paper as Bengtson, 1968
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Research works printed but not linked: 20
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Metadata
- Authors
- Bengtson, S.
- Affiliations
- Institute of Palaeontology, Box 558, S‐751 22 Uppsala 1.
- Corresponding author
- Bengtson, Stefan
- ORCID
- Bengtson, Stefan
- Venue
- Lethaia
- Publisher
- Scandinavian University Press
- Published
- 1968-10
- Volume
- 1
- Issue
- 4
- Pages
- 325-351
- ISSN
- 0024-1164 (ISSN-L)
- 1502-3931
- OpenAlex
- W2107531031
- Cited by
- 82
- References
- 0
- Citations by year
- 2026: 2 · 2025: 1 · 2023: 2 · 2021: 3 · 2020: 2 · 2019: 2 · 2017: 4 · 2016: 4 · 2015: 2 · 2014: 2 · 2013: 3
- FWCI
- 0.96
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Lethaia (publishedVersion)
- Topics
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Evolutionary Biology
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Evolution and Paleontology Studies
- Keywords
- Lower Cambrian, new species, taxonomy, operculum, Baltic Sea
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