An outer shelf shelly fauna from Cambrian Series 2 (Stage 4) of North Greenland (Laurentia)
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...
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ftbioone:10.1017/jpa.2020.112 2024-06-02T08:05:55+00:00 An outer shelf shelly fauna from Cambrian Series 2 (Stage 4) of North Greenland (Laurentia) John S. Peel John S. Peel world 2021-04-27 text/HTML https://doi.org/10.1017/jpa.2020.112 en eng The Paleontological Society doi:10.1017/jpa.2020.112 All rights reserved. https://doi.org/10.1017/jpa.2020.112 Text 2021 ftbioone https://doi.org/10.1017/jpa.2020.112 2024-05-07T00:47:45Z 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. Text East Greenland Forteau Greenland Kangerluk Newfoundland North Greenland BioOne Online Journals Browns ENVELOPE(-44.583,-44.583,-60.700,-60.700) Browns Pond ENVELOPE(-56.081,-56.081,49.617,49.617) Forteau ENVELOPE(-56.965,-56.965,51.467,51.467) Greenland Kangerluk ENVELOPE(-43.927,-43.927,59.808,59.808) Journal of Paleontology 95 S83 1 41 |
institution |
Open Polar |
collection |
BioOne Online Journals |
op_collection_id |
ftbioone |
language |
English |
description |
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. |
author2 |
John S. Peel |
format |
Text |
author |
John S. Peel |
spellingShingle |
John S. Peel An outer shelf shelly fauna from Cambrian Series 2 (Stage 4) of North Greenland (Laurentia) |
author_facet |
John S. Peel |
author_sort |
John S. Peel |
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 |
The Paleontological Society |
publishDate |
2021 |
url |
https://doi.org/10.1017/jpa.2020.112 |
op_coverage |
world |
long_lat |
ENVELOPE(-44.583,-44.583,-60.700,-60.700) ENVELOPE(-56.081,-56.081,49.617,49.617) ENVELOPE(-56.965,-56.965,51.467,51.467) ENVELOPE(-43.927,-43.927,59.808,59.808) |
geographic |
Browns Browns Pond Forteau Greenland Kangerluk |
geographic_facet |
Browns Browns Pond Forteau Greenland Kangerluk |
genre |
East Greenland Forteau Greenland Kangerluk Newfoundland North Greenland |
genre_facet |
East Greenland Forteau Greenland Kangerluk Newfoundland North Greenland |
op_source |
https://doi.org/10.1017/jpa.2020.112 |
op_relation |
doi:10.1017/jpa.2020.112 |
op_rights |
All rights reserved. |
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_ |
1800750807218388992 |