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Journal Article

Trilobite biostratigraphy of the Cambrian 5 and Drumian stages, Series 3 (Laurentian Delamaran, Topazan, and Marjuman stages, Lincolnian Series) of the lower Emigrant Formation at Clayton Ridge, Esmeralda County, Nevada Available to Purchase

Frederick A. Sundberg
Published: 01 May 2018
Journal of Paleontology (2018) 92 (S76): 1–44.
DOI: https://doi.org/10.1017/jpa.2017.130
.... The 100 m thick lower limestone and siltstone member of the Emigrant Formation at Clayton Ridge ranges in age from the Bolbolenellus euryparia / Nephrolenellus multinodus Zone (Laurentian Dyeran Stage) to the Cedaria brevifrons Zone (Laurentian Marjuman Stage; Drumian Stage; this study). The 40 trilobites...
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View PDF for article title, Trilobite biostratigraphy of the Cambrian 5 and <span class="search-highlight">Drumian</span> stages, Series 3 (Laurentian Delamaran, Topazan, and Marjuman stages, Lincolnian Series) of the lower Emigrant Formation at Clayton Ridge, Esmeralda County, Nevada
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Journal Article

QUANTITATIVE ANALYSIS OF REPAIRED AND UNREPAIRED DAMAGE TO TRILOBITES FROM THE CAMBRIAN (STAGE 4, DRUMIAN) IBERIAN CHAINS, NE SPAIN Available to Purchase

STEPHEN PATES, RUSSELL D. C. BICKNELL, ALLISON C. DALEY, SAMUEL ZAMORA
Journal: PALAIOS
Published: 12 December 2017
PALAIOS (2017) 32 (12): 750–761.
DOI: https://doi.org/10.2110/palo.2017.055
... (Huérmeda Formation, Cambrian Series 2, Stage 4), or 23 complete Eccaparadoxides pradoanus thoraces from Mesones de Isuela (Murero Formation, Cambrian Series 3, Drumian). Ten injuries on 69 E. pradoanus thoraces from Purujosa (Murero Formation, Cambrian Series 3, Drumian) were noted. There is no evidence...
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View PDF for article title, QUANTITATIVE ANALYSIS OF REPAIRED AND UNREPAIRED DAMAGE TO TRILOBITES FROM THE CAMBRIAN (STAGE 4, <span class="search-highlight">DRUMIAN</span>) IBERIAN CHAINS, NE SPAIN
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Journal Article

The mid-Cambrian (Series 3, Drumian–Guzhangian; Marjuman) trilobite Holmdalia Robison, 1988, in western Newfoundland and its biostratigraphic significance Available to Purchase

Stephen R. Westrop, Alyce A. Dengler
Published: 20 January 2017
Canadian Journal of Earth Sciences (2017) 54 (2): 113–128.
DOI: https://doi.org/10.1139/cjes-2016-0155
... Formation of western Newfoundland record a succession of at least seven species that spans most of the Drumian and all of the Guzhangian stages, and demonstrate that the genus has considerable, previously unrecognized biostratigraphic potential. Older, Drumian species, including the type species, H...
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View PDF for article title, The mid-Cambrian (Series 3, <span class="search-highlight">Drumian</span>–Guzhangian; Marjuman) trilobite Holmdalia Robison, 1988, in western Newfoundland and its biostratigraphic significance
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Journal Article

Soft-bodied biota from the middle Cambrian (Drumian) Rockslide Formation, Mackenzie Mountains, northwestern Canada Available to Purchase

Julien Kimmig, Brian R. Pratt
Published: 01 January 2015
Journal of Paleontology (2015) 89 (1): 51–71.
DOI: https://doi.org/10.1017/jpa.2014.5
...Julien Kimmig; Brian R. Pratt Abstract A new Burgess Shale-type Lagerstätte is described from the middle Cambrian (Series 3, Drumian) Rockslide Formation of the Mackenzie Mountains, Northwest Territories, Canada. The Rockslide Formation is a unit of deeper water ramp to slope, mixed carbonate...
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View PDF for article title, Soft-bodied biota from the middle Cambrian (<span class="search-highlight">Drumian</span>) Rockslide Formation, Mackenzie Mountains, northwestern Canada
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Generalized stratigraphy of the middle Cambrian (Drumian) Rockslide Formation in the Ravens Throat River area, Northwest Territories. Gray-coloured intervals contain Burgess Shale-type soft-bodied fossils; coprolites are limited to the lower fossil bed. Modified from Kimmig and Pratt (2016).

Generalized stratigraphy of the middle Cambrian (Drumian) Rockslide Formati... Available to Purchase

Published: 18 August 2021
Fig. 2. Generalized stratigraphy of the middle Cambrian (Drumian) Rockslide Formation in the Ravens Throat River area, Northwest Territories. Gray-coloured intervals contain Burgess Shale-type soft-bodied fossils; coprolites are limited to the lower fossil bed. Modified from Kimmig and Pratt
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Specimens examined in this study, including original and new taxonomic inte... Available to Purchase

Published: 24 July 2017
Table 1 Specimens examined in this study, including original and new taxonomic interpretations. Catalogue number Figure Locality Age Previous interpretation Reference New interpretation Fragment KUMIP 153093a/b 5.10, 5.11 Wheeler Formation Cambrian, Drumian Peytoia
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Occurrence of Ravens Throat River taxa in other western Laurentian Lagerstä... Available to Purchase

Published: 01 January 2015
Table 1 Occurrence of Ravens Throat River taxa in other western Laurentian Lagerstätten: Pioche Formation (series 3, stage 5); Burgess Shale (series 3, stage 5); Marjum Formation (series 3, Drumian); Wheeler Formation (series 3, Drumian). √=represented, x
Journal Article

Carbon chemostratigraphy of the Cambrian-Ordovician transition in a midlatitude mixed platform, Montagne Noire, France Available to Purchase

J. Javier Álvaro, Blanca Bauluz, Ignacio Subías, Catherine Pierre, Daniel Vizcaïno
Journal: GSA Bulletin
Published: 01 July 2008
GSA Bulletin (2008) 120 (7-8): 962–975.
DOI: https://doi.org/10.1130/B26243.1
...J. Javier Álvaro; Blanca Bauluz; Ignacio Subías; Catherine Pierre; Daniel Vizcaïno Abstract The Cambrian Drumian Carbon Isotope Excursion (DICE) and the Steptoean Positive Carbon Isotope Excursion (SPICE) have been so far reported in subtropical platforms: the DICE event is a large negative...
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View PDF for article title, Carbon chemostratigraphy of the Cambrian-Ordovician transition in a midlatitude mixed platform, Montagne Noire, France
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Journal Article

Frenchman Mountain Dolostone: A new formation of the Cambrian Tonto Group, Grand Canyon and Basin and Range, USA Open Access

Stephen M. Rowland, Slava Korolev, James W. Hagadorn, Kaushik Ghosh
Journal: Geosphere
Published: 23 March 2023
Geosphere (2023) 19 (3): 719–747.
DOI: https://doi.org/10.1130/GES02514.1
... the Grand Canyon and central Basin and Range, USA. This flat-topped carbonate platform deposit is the uppermost unit of the Tonto Group, replacing the informally named “undifferentiated dolomites.” The unit records two global chemostratigraphic events—the Drumian Carbon Isotope Excursion (DICE), when δ 13 C...
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View PDF for article title, Frenchman Mountain Dolostone: A new formation of the Cambrian Tonto Group, Grand Canyon and Basin and Range, USA
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Journal Article

MICROBIALITE DEVELOPMENT DURING THE PROTRACTED INHIBITION OF SKELETAL-DOMINATED REEFS IN THE ZHANGXIA FORMATION (CAMBRIAN SERIES 3) IN SHANDONG PROVINCE, NORTH CHINA Available to Purchase

YOICHI EZAKI, JIANBO LIU, NATSUKO ADACHI, ZHEN YAN
Journal: PALAIOS
Published: 01 September 2017
PALAIOS (2017) 32 (9): 559–571.
DOI: https://doi.org/10.2110/palo.2016.097
...YOICHI EZAKI; JIANBO LIU; NATSUKO ADACHI; ZHEN YAN Abstract: Coralomorph-lithistid demosponge-microbial reefs are developed in deep subtidal settings of the lower part of the Zhangxia Formation ( Crepicephalina Zone: Drumian of Cambrian Series 3) in the Jiulongshan section of the Laiwu area...
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View PDF for article title, MICROBIALITE DEVELOPMENT DURING THE PROTRACTED INHIBITION OF SKELETAL-DOMINATED REEFS IN THE ZHANGXIA FORMATION (CAMBRIAN SERIES 3) IN SHANDONG PROVINCE, NORTH CHINA
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Image
Principal Component Analysis plot of the semilandmarked breaks (same as Fig. 8), separating specimens by formation and by origin of the breaks. The overlap of previously described examples of Bicrescomanducator serratus (Zamora et al. 2011) (points with black dots) with new examples (points without black dots), shows the positive assignment of new material to the ichnotaxon. Key: circles = Huérmeda Formation (Spain, Cambrian Stage 4); triangles with point upwards: Mansilla Formation (Spain, Cambrian Stage 5); diamonds: Murero Formation (Spain, Cambrian Drumian); triangles with point downwards: Rabbitkettle Formation (Canada, Cambrian Drumian); squares: Stephen Formation (Canada, Cambrian, Stage 5); stars: Valongo Formation (Portugal, Ordovician Darriwilian); blue: abiotic; red: biotic.

Principal Component Analysis plot of the semilandmarked breaks (same as Fi... Available to Purchase

Published: 12 December 2017
examples (points without black dots), shows the positive assignment of new material to the ichnotaxon. Key: circles = Huérmeda Formation (Spain, Cambrian Stage 4); triangles with point upwards: Mansilla Formation (Spain, Cambrian Stage 5); diamonds: Murero Formation (Spain, Cambrian Drumian); triangles
Journal Article

A link in the chain of the Cambrian zooplankton: bradoriid arthropods invade the water column Available to Purchase

MARK WILLIAMS, THIJS R. A. VANDENBROUCKE, VINCENT PERRIER, DAVID J. SIVETER, THOMAS SERVAIS
Published: 05 March 2015
Geological Magazine (2015) 152 (5): 923–934.
DOI: https://doi.org/10.1017/S0016756815000059
..., favouring oxygenated waters, as suggested by their anatomy, lithofacies distribution, faunal associates and provinciality. Most bradoriids were extinct by the end of the Drumian Age (middle of Cambrian Epoch 3). The post-Drumian is characterized by widespread dysoxic shelf lithofacies in southern Britain...
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Composite δ13C curve and global standard chronostratigraphic Cambrian scale showing the isotopic shifts DICE (Drumian carbon isotope excursion) and SPICE (Steptoean positive isotopic carbon excursion) discussed in the text (modified from Zhu et al., 2006). BACE—Basal Cambrian Carbon Isotope Excursion; ZHUCE—Zhujiaqing Carbon Isotope Excursion; SHICE—Shiyantou Carbon Isotope Excursion; CARE—Cambrian Arthropod Radiation Isotope Excursion; MICE—Mingxinsi Carbon Isotope Excursion; AECE—Archae-ocyathid Extinction Carbon Isotope Excursion; ROECE—Redlichiid-Olenellid Extinction Carbon Isotope Excursion; DICE—Drumian Carbon Isotope Excursion; SPICE—Steptoean Positive Carbon Isotope Excursion; TOCE—Top of Cambrian Excursion.

Composite δ 13 C curve and global standard chronostratigraphic Cambrian sca... Available to Purchase

Published: 01 July 2008
Figure 1. Composite δ 13 C curve and global standard chronostratigraphic Cambrian scale showing the isotopic shifts DICE (Drumian carbon isotope excursion) and SPICE (Steptoean positive isotopic carbon excursion) discussed in the text (modified from Zhu et al., 2006 ). BACE—Basal Cambrian Carbon
Image
Box plots of geographic occupancy of species for 10 Cambrian stages. Dru, Drumian; For, Fortunian; Guz, Guzhangian; Jia, Jiangshanian; Pai, Paibian; Wul, Wuliuan; St2, Stage 2; St3, Stage 3; St4, Stage 4; St10, Stage 10.

Box plots of geographic occupancy of species for 10 Cambrian stages. Dru, D... Open Access

Published: 01 May 2023
Figure 6. Box plots of geographic occupancy of species for 10 Cambrian stages. Dru, Drumian; For, Fortunian; Guz, Guzhangian; Jia, Jiangshanian; Pai, Paibian; Wul, Wuliuan; St2, Stage 2; St3, Stage 3; St4, Stage 4; St10, Stage 10.
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By-cell biogeographic turnover and by-bioregion turnover (emergence and disintegration) throughout the Cambrian. The estimates are the averages of 400 random grid rotations. Dru, Drumian; For, Fortunian; Guz, Guzhangian; Jia, Jiangshanian; Pai, Paibian; Wul, Wuliuan; St2, Stage 2; St3, Stage 3; St4, Stage 4; St10, Stage 10.

By-cell biogeographic turnover and by-bioregion turnover (emergence and dis... Open Access

Published: 01 May 2023
Figure 2. By-cell biogeographic turnover and by-bioregion turnover (emergence and disintegration) throughout the Cambrian. The estimates are the averages of 400 random grid rotations. Dru, Drumian; For, Fortunian; Guz, Guzhangian; Jia, Jiangshanian; Pai, Paibian; Wul, Wuliuan; St2, Stage 2; St3
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Stratigraphic and geographical occurrences of acritarch assemblages from carbonaceous shales in the Cambrian (data from Baltica and Poland modified from Moczydłowska, 1991, 1998; data from Tarim, Yangtze, and Lesser Himalaya from Yao et al., 2005). Guzh.—Guzhangian; Drum.—Drumian; Fortun.—Fortunian.

Stratigraphic and geographical occurrences of acritarch assemblages from ca... Open Access

Published: 07 April 2021
Figure 13. Stratigraphic and geographical occurrences of acritarch assemblages from carbonaceous shales in the Cambrian (data from Baltica and Poland modified from Moczydłowska, 1991 , 1998 ; data from Tarim, Yangtze, and Lesser Himalaya from Yao et al., 2005 ). Guzh.—Guzhangian; Drum.—Drumian
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Global species diversity of marine invertebrates through the Cambrian based on shareholder quorum subsampling with 60% frequency coverage per stage. Error bar is standard deviation of 100 trials. Dru, Drumian; For, Fortunian; Guz, Guzhangian; Jia, Jiangshanian; Pai, Paibian; Wul, Wuliuan; St2, Stage 2; St3, Stage 3; St4, Stage 4; St10, Stage 10.

Global species diversity of marine invertebrates through the Cambrian based... Open Access

Published: 01 May 2023
Figure 5. Global species diversity of marine invertebrates through the Cambrian based on shareholder quorum subsampling with 60% frequency coverage per stage. Error bar is standard deviation of 100 trials. Dru, Drumian; For, Fortunian; Guz, Guzhangian; Jia, Jiangshanian; Pai, Paibian; Wul
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Trajectory of sample-standardized diversity of actively mobile occurrences in the Cambrian based on shareholder quorum subsampling with 60% frequency coverage per stage. Error bar is standard deviation of 100 trials. Dru, Drumian; For, Fortunian; Guz, Guzhangian; Jia, Jiangshanian; Pai, Paibian; Wul, Wuliuan; St2, Stage 2; St3, Stage 3; St4, Stage 4; St10, Stage 10.

Trajectory of sample-standardized diversity of actively mobile occurrences ... Open Access

Published: 01 May 2023
Figure 7. Trajectory of sample-standardized diversity of actively mobile occurrences in the Cambrian based on shareholder quorum subsampling with 60% frequency coverage per stage. Error bar is standard deviation of 100 trials. Dru, Drumian; For, Fortunian; Guz, Guzhangian; Jia, Jiangshanian; Pai
Image
Stratigraphic log of the Campelou section (Pardailhan nappe) with biostratigraphic and chemostratigraphic data. XRD—X-ray diffraction; TOC—total organic carbon; PDB—Peedee belemnite; FAD—first appearance datum; DICE—Drumian Carbon Isotope Excursion; SPICE—Steptoean Positive Carbon Isotope Excursion.

Stratigraphic log of the Campelou section (Pardailhan nappe) with biostrati... Available to Purchase

Published: 01 July 2008
Figure 5. Stratigraphic log of the Campelou section (Pardailhan nappe) with biostratigraphic and chemostratigraphic data. XRD—X-ray diffraction; TOC—total organic carbon; PDB—Peedee belemnite; FAD—first appearance datum; DICE—Drumian Carbon Isotope Excursion; SPICE—Steptoean Positive Carbon
Journal Article

Environmental and trilobite diversity changes during the middle-late Cambrian SPICE event Available to Purchase

Lei Zhang, Thomas J. Algeo, Laishi Zhao, Tais W. Dahl, Zhong-Qiang Chen, Zihu Zhang, Simon W. Poulton, Nigel C. Hughes, Xueqing Gou, Chao Li
Journal: GSA Bulletin
Published: 12 May 2023
GSA Bulletin (2024) 136 (1-2): 810–828.
DOI: https://doi.org/10.1130/B36421.1
..., spanning the Drumian to lower Jiangshanian. Redox data indicate locally/regionally well-oxygenated conditions throughout the SPICE event in both study sections except for low-oxygen (hypoxic) conditions within the rising limb of the SPICE (early-middle Paibian) at Duibian. As in coeval sections globally...
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