An outer shelf shelly fauna from Cambrian Series 2 (Stage 4) of North Greenland (Laurentia)
Abstract An assemblage of 50 species of small shelly fossils is described from Cambrian Series 2 (Stage 4) strata in North Greenland, the present day northernmost part of the paleocontinent of Laurentia. The fossils are derived from the basal member of the Aftenstjernesø Formation at Navarana Fjord,...
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Cambridge University Press (CUP)
2021
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Online Access: | http://dx.doi.org/10.1017/jpa.2020.112 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022336020001122 |
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crcambridgeupr:10.1017/jpa.2020.112 2024-04-07T07:52:09+00:00 An outer shelf shelly fauna from Cambrian Series 2 (Stage 4) of North Greenland (Laurentia) Peel, John S. 2021 http://dx.doi.org/10.1017/jpa.2020.112 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022336020001122 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Journal of Paleontology volume 95, issue S83, page 1-41 ISSN 0022-3360 1937-2337 Paleontology journal-article 2021 crcambridgeupr https://doi.org/10.1017/jpa.2020.112 2024-03-08T00:33:54Z Abstract An assemblage of 50 species of small shelly fossils is described from Cambrian Series 2 (Stage 4) strata in North Greenland, the present day northernmost part of the paleocontinent of Laurentia. The fossils are derived from the basal member of the Aftenstjernesø Formation at Navarana Fjord, northern Lauge Koch Land, a condensed unit that accumulated in a sediment-starved outer ramp setting in the transarctic Franklinian Basin, on the Innuitian margin of Laurentia. Most other small shelly fossil assemblages of similar age and composition from North America are described from the Iapetan margin of Laurentia, from North-East Greenland south to Pennsylvania. Trilobites are uncommon, but include Serrodiscus . The Australian bradoriid Spinospitella is represented by a complete shield. Obolella crassa is the only common brachiopod. Hyoliths, including Cassitella , Conotheca , Neogloborilus , and Triplicatella , are abundant and diverse, but most are represented just by opercula. Sclerites interpreted as stem-group aculiferans (sachitids) are conspicuous, including Qaleruaqia , the oldest described paleoloricate, Ocruranus ?, Inughuitoconus n. gen., and Hippopharangites . Helcionelloid mollusks are diverse, but not common; they are associated with numerous specimens of the bivalve Pojetaia runnegari . The fauna compares best with that of the upper Bastion Formation of North-East Greenland, the Forteau Formation of western Newfoundland, and the Browns Pond Formation of New York, but several taxa have a world-wide distribution. Many specimens are encrusted with crystals of authigenic albite. New species: Anabarella ? navaranae , Stenotheca ? higginsi , Figurina ? polaris , Hippopharangites groenlandicus , Inughuitoconus borealis , and Ocruranus ? kangerluk . UUID: http://zoobank.org/160a17b1-3166-4fcf-9849-a3cabd1e04a3 Article in Journal/Newspaper East Greenland Forteau Greenland Kangerluk Newfoundland North Greenland Cambridge University Press Greenland Browns ENVELOPE(-44.583,-44.583,-60.700,-60.700) Forteau ENVELOPE(-56.965,-56.965,51.467,51.467) Browns Pond ENVELOPE(-56.081,-56.081,49.617,49.617) Kangerluk ENVELOPE(-43.927,-43.927,59.808,59.808) Journal of Paleontology 95 S83 1 41 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Paleontology |
spellingShingle |
Paleontology Peel, John S. An outer shelf shelly fauna from Cambrian Series 2 (Stage 4) of North Greenland (Laurentia) |
topic_facet |
Paleontology |
description |
Abstract An assemblage of 50 species of small shelly fossils is described from Cambrian Series 2 (Stage 4) strata in North Greenland, the present day northernmost part of the paleocontinent of Laurentia. The fossils are derived from the basal member of the Aftenstjernesø Formation at Navarana Fjord, northern Lauge Koch Land, a condensed unit that accumulated in a sediment-starved outer ramp setting in the transarctic Franklinian Basin, on the Innuitian margin of Laurentia. Most other small shelly fossil assemblages of similar age and composition from North America are described from the Iapetan margin of Laurentia, from North-East Greenland south to Pennsylvania. Trilobites are uncommon, but include Serrodiscus . The Australian bradoriid Spinospitella is represented by a complete shield. Obolella crassa is the only common brachiopod. Hyoliths, including Cassitella , Conotheca , Neogloborilus , and Triplicatella , are abundant and diverse, but most are represented just by opercula. Sclerites interpreted as stem-group aculiferans (sachitids) are conspicuous, including Qaleruaqia , the oldest described paleoloricate, Ocruranus ?, Inughuitoconus n. gen., and Hippopharangites . Helcionelloid mollusks are diverse, but not common; they are associated with numerous specimens of the bivalve Pojetaia runnegari . The fauna compares best with that of the upper Bastion Formation of North-East Greenland, the Forteau Formation of western Newfoundland, and the Browns Pond Formation of New York, but several taxa have a world-wide distribution. Many specimens are encrusted with crystals of authigenic albite. New species: Anabarella ? navaranae , Stenotheca ? higginsi , Figurina ? polaris , Hippopharangites groenlandicus , Inughuitoconus borealis , and Ocruranus ? kangerluk . UUID: http://zoobank.org/160a17b1-3166-4fcf-9849-a3cabd1e04a3 |
format |
Article in Journal/Newspaper |
author |
Peel, John S. |
author_facet |
Peel, John S. |
author_sort |
Peel, John S. |
title |
An outer shelf shelly fauna from Cambrian Series 2 (Stage 4) of North Greenland (Laurentia) |
title_short |
An outer shelf shelly fauna from Cambrian Series 2 (Stage 4) of North Greenland (Laurentia) |
title_full |
An outer shelf shelly fauna from Cambrian Series 2 (Stage 4) of North Greenland (Laurentia) |
title_fullStr |
An outer shelf shelly fauna from Cambrian Series 2 (Stage 4) of North Greenland (Laurentia) |
title_full_unstemmed |
An outer shelf shelly fauna from Cambrian Series 2 (Stage 4) of North Greenland (Laurentia) |
title_sort |
outer shelf shelly fauna from cambrian series 2 (stage 4) of north greenland (laurentia) |
publisher |
Cambridge University Press (CUP) |
publishDate |
2021 |
url |
http://dx.doi.org/10.1017/jpa.2020.112 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022336020001122 |
long_lat |
ENVELOPE(-44.583,-44.583,-60.700,-60.700) ENVELOPE(-56.965,-56.965,51.467,51.467) ENVELOPE(-56.081,-56.081,49.617,49.617) ENVELOPE(-43.927,-43.927,59.808,59.808) |
geographic |
Greenland Browns Forteau Browns Pond Kangerluk |
geographic_facet |
Greenland Browns Forteau Browns Pond Kangerluk |
genre |
East Greenland Forteau Greenland Kangerluk Newfoundland North Greenland |
genre_facet |
East Greenland Forteau Greenland Kangerluk Newfoundland North Greenland |
op_source |
Journal of Paleontology volume 95, issue S83, page 1-41 ISSN 0022-3360 1937-2337 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/jpa.2020.112 |
container_title |
Journal of Paleontology |
container_volume |
95 |
container_issue |
S83 |
container_start_page |
1 |
op_container_end_page |
41 |
_version_ |
1795667372132007936 |