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Guangxiaspis guangxiensis

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Journal Article

VENTRAL STRUCTURE AND ONTOGENY OF THE LATE FURONGIAN (CAMBRIAN) TRILOBITE GUANGXIASPIS GUANGXIENSIS ZHOU, 1977 AND THE DIPHYLETIC ORIGIN OF THE MEDIAN SUTURE

XUE-JIAN ZHU, NIGEL C. HUGHES, SHAN-CHI PENG
Published: 01 May 2010
Journal of Paleontology (2010) 84 (3): 493–504.
DOI: https://doi.org/10.1666/09-070.1
...XUE-JIAN ZHU; NIGEL C. HUGHES; SHAN-CHI PENG Abstract Articulated meraspid and holaspid exoskeletons of Guangxiaspis guangxiensis from the Guole Township, Jingxi County, Guangxi Province, China, are preserved in mudstone deposited during an obrution event. The species has a short dorsal pre...
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View PDF for article title, VENTRAL STRUCTURE AND ONTOGENY OF THE LATE FURONGIAN (CAMBRIAN) TRILOBITE <span class="search-highlight">GUANGXIASPIS</span> <span class="search-highlight">GUANGXIENSIS</span> ZHOU, 1977 AND THE DIPHYLETIC ORIGIN OF THE MEDIAN SUTURE
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Figure3—Guangxiaspis guangxiensisZhou, 1977, Sandu Formation, Guole, Jingxi, Guangxi. 1–2, NIGPAS148317, latex cast and internal mold of incomplete meraspid degree 2 exoskeleton respectively. Note the division between thorax and transitory pygidium indicated by white arrow. X13.5; 3–4, NIGPAS148318: 3, latex cast of external mold of incomplete meraspid degree 6? exoskeleton, X7.2; 4, enlargement of the pygidium of 3, X10.8; 5, NIGPAS148319, complete internal mold of meraspid degree 5? exoskeleton. Note the division between thorax and transitory pygidium indicated by white arrow. X4.5; 6–7, NIGPAS148320, internal mold and latex cast of complete meraspid degree 3 exoskeleton. Note the division between thorax and transitory pygidium indicated by white arrow. X10.5; 8, NIGPAS148321, internal mold of incomplete meraspid degree 3 exoskeleton. Note the division between thorax and transitory pygidium indicated by white arrow. X16; 9, NIGPAS148322, internal mold of incomplete meraspid degree 5? exoskeleton. Note the division between thorax and transitory pygidium indicated by white arrow. X8; 10, NIGPAS148323, internal mold of incomplete meraspid degree 4 exoskeleton. Note the division between thorax and transitory pygidium indicated by white arrow. X10.5; 11, NIGPAS148324, internal mold of nearly complete meraspid degree 6 exoskeleton. Note the division between thorax and transitory pygidium and the position of pygidial pleural spine indicated by white arrows. X2; 12, NIGPAS148325, internal mold of incomplete meraspid degree 6 exoskeleton. Note the division between thorax and transitory pygidium indicated by white arrow. X14

Figure 3 — Guangxiaspis guangxiensis Zhou, 1977 , Sandu Formation, Guole,...

Published: 01 May 2010
Figure 3 — Guangxiaspis guangxiensis Zhou, 1977 , Sandu Formation, Guole, Jingxi, Guangxi. 1–2 , NIGPAS148317, latex cast and internal mold of incomplete meraspid degree 2 exoskeleton respectively. Note the division between thorax and transitory pygidium indicated by white arrow. X13.5; 3–4
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Figure4—Guangxiaspis guangxiensisZhou, 1977, Sandu Formation, Guole, Jingxi, Guangxi. 1, NIGPAS148326, latex cast of complete early holaspid exoskeleton. Note the termination of exoskeleton indicated by white arrow. X6.5; 2–5, NIGPAS148327: 2, internal mold of complete early holaspid exoskeleton, X4.3; 3, latex cast of complete early holaspid exoskeleton, X4.3; 4, right anterior lateral view of 3, X4.3; 5, enlargement of anterior area of 2, X8.6; 6–7, NIGPAS148328; 6, latex of a pair of librigenae, rostral plate and hypostome, X5.5; 7, enlargement of rostral plate and hypostome of 6, X11; 8, NIGPAS 148329, latex cast of nearly complete early holaspid exoskeleton, X3.0; 9, NIGPAS148330, internal mold of incomplete later holaspid exoskeleton, X3.0; 10, NIGPAS148331, internal mold of incomplete later holaspid exoskeleton, X2.0; 11, NIGPAS148332, internal mold of incomplete later holaspid exoskeleton, X3.5; 12, NIGPAS148333, internal mold of complete later holaspid exoskeleton, X3.0

Figure 4 — Guangxiaspis guangxiensis Zhou, 1977 , Sandu Formation, Guole,...

Published: 01 May 2010
Figure 4 — Guangxiaspis guangxiensis Zhou, 1977 , Sandu Formation, Guole, Jingxi, Guangxi. 1 , NIGPAS148326, latex cast of complete early holaspid exoskeleton. Note the termination of exoskeleton indicated by white arrow. X6.5; 2–5 , NIGPAS148327: 2 , internal mold of complete early holaspid
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Figure5—Guangxiaspis guangxiensisZhou, 1977, Sandu Formation, Guole, Jingxi, Guangxi. 1–2, NIGPAS148334, latex cast and internal mold of complete early holaspid exoskeleton, X3.2; 3, NIGPAS148335, internal mold of complete later holaspid exoskeleton, X2.1; 4, NIGPAS148336, latex cast of nearly complete later holaspid exoskeleton, X2.3; 5, NIGPAS148337, latex cast of librigena, X3; 6, NIGPAS148338, latex cast of incomplete later holaspid exoskeleton, X3.3; 7–8, NIGPAS148339, latex cast and internal mold of incomplete later holaspid exoskeleton, X2.7; 9, NIGPAS148340, latex cast of incomplete later holaspid exoskeleton, X3; 10, NIGPAS148341, internal mold of incomplete later holaspid exoskeleton, X2

Figure 5 — Guangxiaspis guangxiensis Zhou, 1977 , Sandu Formation, Guole,...

Published: 01 May 2010
Figure 5 — Guangxiaspis guangxiensis Zhou, 1977 , Sandu Formation, Guole, Jingxi, Guangxi. 1–2 , NIGPAS148334, latex cast and internal mold of complete early holaspid exoskeleton, X3.2; 3 , NIGPAS148335, internal mold of complete later holaspid exoskeleton, X2.1; 4 , NIGPAS148336, latex cast
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Figure2—Diagrams of ventral view of cephala of Shergoldia laevigata and Guangxiaspis guangxiensis. 1–2, early and late holaspid of Shergoldia laevigata respectively. Note variation of rostral plate shape. 3, Guangxiaspis guangxiensis

Figure 2 —Diagrams of ventral view of cephala of Shergoldia laevigata an...

Published: 01 May 2010
Figure 2 —Diagrams of ventral view of cephala of Shergoldia laevigata and Guangxiaspis guangxiensis . 1–2 , early and late holaspid of Shergoldia laevigata respectively. Note variation of rostral plate shape. 3 , Guangxiaspis guangxiensis
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Table 3 —Principal component analysis based on logged data for 7 linear me...

Published: 01 May 2010
Table 3 —Principal component analysis based on logged data for 7 linear measures (see Table 1 ) of Guangxiaspis guangxiensis , n  =  9
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Figure6—Bivariate relationships between occipital-glabellar length of Guangxiaspis guangxiensis and three other linear dimensions of the cranidium, showing positive allometry of the frontal area and glabellar width, and slight negative allometry of the palpebral lobe as the occipital-glabellar length increased, n  =  27

Figure 6 —Bivariate relationships between occipital-glabellar length of G...

Published: 01 May 2010
Figure 6 —Bivariate relationships between occipital-glabellar length of Guangxiaspis guangxiensis and three other linear dimensions of the cranidium, showing positive allometry of the frontal area and glabellar width, and slight negative allometry of the palpebral lobe as the occipital-glabellar
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Table 2 —Reduced Major Axes for relationships among linear variables indic...

Published: 01 May 2010
Table 2 —Reduced Major Axes for relationships among linear variables indicating significant allometry in the shape of the glabella, and in the lengths of the palpebral lobe, frontal area and genal spines during meraspid and holaspid growth of Guangxiaspis guangxiensis . Each analysis based on log
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Figure7—Bivariate relationships between axial pygidial length of Guangxiaspis guangxiensis and two other linear dimensions of the pygidium, the width and the length of the pygidial spine, n  =  27 for length/width comparison, n  =  14 for length/pygidial spine length comparison. There is no marked allometry in the pygidial length/width relationship

Figure 7 —Bivariate relationships between axial pygidial length of Guangx...

Published: 01 May 2010
Figure 7 —Bivariate relationships between axial pygidial length of Guangxiaspis guangxiensis and two other linear dimensions of the pygidium, the width and the length of the pygidial spine, n  =  27 for length/width comparison, n  =  14 for length/pygidial spine length comparison
Journal Article

Onset of Maturity and Ontogenetic Tagmatization of the Pygidium in the Development of Lonchopygella megaspina (Trilobita, Later Furongian, Cambrian)

Xuejian Zhu, Nigel C. Hughes, Shanchi Peng
Published: 01 May 2013
Journal of Paleontology (2013) 87 (3): 472–483.
DOI: https://doi.org/10.1666/12-073.1
... considered to be related but more basal among leiostegiinids include forms such as Guangxiaspis guangxiensis Zhou in Zhou et al., 1977 , with ten holaspid thoracic segments ( Zhu et al., 2010 ). This inference is supported by a presently unpublished articulated basal mansuyine trilobite from the same...
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Journal Article

Satunarcus , a new late Cambrian trilobite genus from southernmost Thailand and a reevaluation of the subfamily Mansuyiinae Hupé, 1955

Shelly J. Wernette, Nigel C. Hughes, Paul M. Myrow, Apsorn Sardsud
Published: 01 September 2020
Journal of Paleontology (2020) 94 (5): 867–880.
DOI: https://doi.org/10.1017/jpa.2020.23
..., 1975 , pl. 43, figs. 1, 7, 8). Dictyella conica Shergold, Laurie, and Shergold, 2007 .—Two cranidia and two pygidia (Shergold et al., 2007 , figs. 27.a, 27.c, 27.j, 27.o, 27.r). Guangxiaspis guangxiensis Zhou in Zhou et al., 1977 .—Two cranidia and two pygidia (Zhu et al., 2010 , fig. 5.9...
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View PDF for article title, Satunarcus , a new late Cambrian trilobite genus from southernmost Thailand and a reevaluation of the subfamily Mansuyiinae Hupé, 1955
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A new stemmed echinoderm from the Furongian of China and the origin of Glyptocystitida (Blastozoa, Echinodermata)

SAMUEL ZAMORA, COLIN D. SUMRALL, XUE-JIAN ZHU, BERTRAND LEFEBVRE
Published: 03 March 2016
Geological Magazine (2017) 154 (3): 465–475.
DOI: https://doi.org/10.1017/S001675681600011X
.... Zhu X. J. , Hughes N. C. & Peng S. C. 2010 . Ventral structure and ontogeny of the late Furongian (Cambrian) trilobite Guangxiaspis guangxiensis Zhou, 1977...
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Journal Article

The first aglaspidid sensu stricto from the Cambrian of China (Sandu Formation, Guangxi)

RUDY LEROSEY-AUBRIL, JAVIER ORTEGA-HERNÁNDEZ, XUEJIAN ZHU
Published: 15 January 2013
Geological Magazine (2013) 150 (3): 565–571.
DOI: https://doi.org/10.1017/S0016756812001045
.... Zhu X. J. , Hughes N. C. & Peng S. C. 2010 . Ventral structure and ontogeny of the late Furongian (Cambrian) trilobite Guangxiaspis guangxiensis Zhou, 1977...
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Ontogeny of a New Species of the Cambrian Series 3 (Middle Cambrian) Trilobite Genus Liostracina Monke, 1903 from North China and the Taxonomic Position of the Superfamily Trinucleoidea

Tae-Yoon S. Park, Ji-Hoon Kihm, Imseong Kang, Duck K. Choi
Published: 01 March 2014
Journal of Paleontology (2014) 88 (2): 395–402.
DOI: https://doi.org/10.1666/13-048
... , Beijing . (In Chinese) Zhu X.-J. Hughes N. C. Peng S.-C. 2010 . Ventral structure and ontogeny of the late Furongian (Cambrian) trilobite Guangxiaspis...
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View PDF for article title, Ontogeny of a New Species of the Cambrian Series 3 (Middle Cambrian) Trilobite Genus Liostracina Monke, 1903 from North China and the Taxonomic Position of the Superfamily Trinucleoidea
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The trouble with trilobites: classification, phylogeny and the cryptogenesis problem

John R. Paterson
Published: 20 June 2019
Geological Magazine (2020) 157 (1): 35–46.
DOI: https://doi.org/10.1017/S0016756819000426
... of the Association of Australasian Palaeontologists 34 , 243 – 53 . Zhu X , Hughes NC and Peng S ( 2010 ) Ventral structure and ontogeny of the late Furongian (Cambrian) trilobite Guangxiaspis guangxiensis Zhou, 1977 and the diphyletic origin of the median suture . Journal...
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Cambrian rocks and faunas of the Wachi La, Black Mountains, Bhutan

NIGEL C. HUGHES, PAUL M. MYROW, N. RYAN MCKENZIE, D. A. T. HARPER, O. N. BHARGAVA, S. K. TANGRI, K. S. GHALLEY, C. M. FANNING
Published: 14 September 2010
Geological Magazine (2011) 148 (3): 351–379.
DOI: https://doi.org/10.1017/S0016756810000750
.... 2010 . Ventral structure and phylogeny of the late Furongian (Cambrian) trilobite Guangxiaspis guangxiensis Zhou 1977 and the diphyletic origin of the median suture . Journal of Paleontology 84 , 492 – 503 . Zhu...
View PDF for article title, Cambrian rocks and faunas of the Wachi La, Black Mountains, Bhutan
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