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Maotianshan Shale

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Journal Article
Journal: PALAIOS
Published: 01 February 2005
PALAIOS (2005) 20 (1): 3–26.
...JEAN VANNIER; JUNYUAN CHEN Abstract Three categories of fossil aggregates are recognized in the Lower Cambrian Maotianshan Shale biota from SW China: (1) elliptical aggregates with randomly distributed exoskeletal remains of typically small- to medium-size bivalved arthropods (e.g., ostracode-like...
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First thumbnail for: Early Cambrian Food Chain: New Evidence from Fossi...
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FIGURE 11—Anomalocaridids, Maotianshan, lower Cambrian Maotianshan Shale, Yunnan Province, SW China; ba = bivalved arthropod; e = lateral eye; g = gut; ra = raptorial appendages. Scale bar = 1 cm. (A) ELRC 20001, almost complete juvenile specimen showing the frontal raptorial appendages and details of the digestive system (white arrows indicate assumed lobe-like digestive glands on both sides of the gut). (B, C) Details of raptorial appendages (ELRC 10116 and ELRC 21047, respectively)
Published: 01 February 2005
FIGURE 11 —Anomalocaridids, Maotianshan, lower Cambrian Maotianshan Shale, Yunnan Province, SW China; ba = bivalved arthropod; e = lateral eye; g = gut; ra = raptorial appendages. Scale bar = 1 cm. (A) ELRC 20001, almost complete juvenile specimen showing the frontal raptorial appendages
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FIGURE 7—Other elliptical aggregates, lower Cambrian Maotianshan Shale, Yunnan Province, SW China, scale bar = 5 mm. (A) ELRC Ma90001, with numerous trilobite fragments, general view, Shankoucun. (B) Unnumbered specimen (Maotianshan Field Museum) with mostly small hyoliths, general view, Ma'anshan; same as Fig. 5B. (C) ELRC Ma90002 with small hyoliths and colored background, general view, Ma'anshan
Published: 01 February 2005
FIGURE 7 —Other elliptical aggregates, lower Cambrian Maotianshan Shale, Yunnan Province, SW China, scale bar = 5 mm. (A) ELRC Ma90001, with numerous trilobite fragments, general view, Shankoucun. (B) Unnumbered specimen (Maotianshan Field Museum) with mostly small hyoliths, general view, Ma'anshan
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FIGURE 12—Elongate aggregates, Ma'anshan, lower Cambrian Maotianshan Shale, Yunnan Province, SW China; c = hyolith conch; cb = colored background; o = operculum. Scale bar = 5 mm in A, C, 2 mm in B, and 1 mm in D, E. (A) ELRC Ma90058. (B, E) ELRC Ma90018b. (C, D) ELRC Ma90021
Published: 01 February 2005
FIGURE 12 —Elongate aggregates, Ma'anshan, lower Cambrian Maotianshan Shale, Yunnan Province, SW China; c = hyolith conch; cb = colored background; o = operculum. Scale bar = 5 mm in A, C, 2 mm in B, and 1 mm in D, E. (A) ELRC Ma90058. (B, E) ELRC Ma90018b. (C, D) ELRC Ma90021
Journal Article
Published: 15 March 2018
Journal of the Geological Society (2018) 175 (4): 659–666.
... constrained owing to lack of datable rock materials within the Maotianshan Shale that yields the fossils. Here we integrate secondary ion mass spectrometry (SIMS) and chemical ablation isotope dilution thermal ionization mass spectrometry (CA-ID-TIMS) U–Pb analyses of detrital zircons from the Maotianshan...
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First thumbnail for: Geochronological constraint on the Cambrian Chengj...
Second thumbnail for: Geochronological constraint on the Cambrian Chengj...
Third thumbnail for: Geochronological constraint on the Cambrian Chengj...
Journal Article
Journal: Geology
Published: 01 October 2008
Geology (2008) 36 (10): 755–758.
... of the role of early mineral replication of soft tissues versus the conservation of primary organic remains. Most prior work focused on soft-bodied fossils from the two most important BST biotas, those of the Burgess Shale (Canada) and Maotianshan Shale (Chengjiang, China). Fossils from these two deposits do...
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First thumbnail for: Cambrian Burgess <span class="search-highlight">Sh...
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Journal Article
Journal: Paleobiology
Published: 01 November 2011
Paleobiology (2011) 37 (4): 563–576.
...David Casenove; Taichiro Goto; Jean Vannier Abstract The Burgess Shale-type Lagerstätten of the Early Cambrian Maotianshan Shale record an apparently sudden conquest of pelagic niches by ten phyla of metazoans. One of these phyla is Chaetognatha, a group of predatory marine worms. Given their role...
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First thumbnail for: Relation between anatomy and lifestyles in Recent ...
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Figure 3
Published: 23 February 2015
Figure 3 Millimeter-scale bioturbation levels in the Wheeler, Spence, and Maotianshan shales. A, Ichnofabric indices (ii) for Wheeler Shale, Wheeler Amphitheatre, Utah. n= 1485. B, Ichnofabric indices (ii) for Spence Shale. Composite of samples collected
Journal Article
Journal: Paleobiology
Published: 01 May 2010
Paleobiology (2010) 36 (2): 303–317.
... was that there was a “Cambrian Information Revolution,” a coevolutionary increase in the information content of the marine environment and in the ability of and necessity for organisms to obtain and process this information. A preliminary analysis of the Maotianshan Shale (Chengjiang) biota indicates that the distribution...
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First thumbnail for: Information landscapes and sensory ecology of the ...
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Journal Article
Journal: PALAIOS
Published: 01 January 2009
PALAIOS (2009) 24 (12): 826–839.
... depositional environments and the composition and preservation of their respective fossil assemblages. In general, the Maotianshan Shale is characterized by superimposed couplets of laminated background and thin event mudstone layers representing two distinct taphofacies, A and B, respectively. Fossils...
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First thumbnail for: QUANTITATIVE ANALYSIS OF TAPHOFACIES AND PALEOCOMM...
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FIGURE 4—Elliptical aggregates dominated by bradoriid arthropods, lower Cambrian Maotianshan Shale, Yunnan Province, SW China. Scale bar = 5 mm in A–C, 1 mm in D, and 500 μm in E–G. (A, D, E) ELRC 23001, general view and details of carapaces, Maotianshan. (B) ELRC 23002b, general view, Maotianshan. (C) ELRC 90027a, specimen with colored background and drop-like shape, Maotianshan. (F, G) Kunmingella maotianshanensis, two specimens (not from aggregates) to show the general morphology of carapace and soft body of bradoriids (white arrow points anteriorly), Ercaicun, near Haikou
Published: 01 February 2005
FIGURE 4 —Elliptical aggregates dominated by bradoriid arthropods, lower Cambrian Maotianshan Shale, Yunnan Province, SW China. Scale bar = 5 mm in A–C, 1 mm in D, and 500 μm in E–G. (A, D, E) ELRC 23001, general view and details of carapaces, Maotianshan. (B) ELRC 23002b, general view, Maotianshan
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FIGURE 6—Elliptical aggregates dominated by waptiid arthropods, lower Cambrian Maotianshan Shale, Yunnan Province, SW China. Scale bar = 5 mm; a = antenna; c = carapace; fr = furcal rami; is = Isoxys remains; st = segmented trunk; ta = trunk appendages; wa = waptiid remains. (A) Unnumbered specimen (Maotianshan Field Museum), general view, Ma'anshan. (B) ELRC Sk90060, general view, Shankoucun. (C) ELRC Sk90061, general view, Shankoucun. (D) Unnumbered specimen (Maotianshan Field Museum), details showing waptiid remains and reddish background, Ma'anshan. (E) Details of wrinkled carapaces, Ma'anshan. (F, G) waptiids with preserved segmented trunk as in inferred life attitude, ELRC Sk21001 from Shankoucun and ELRC 23002, respectively (white arrow points anteriorly)
Published: 01 February 2005
FIGURE 6 —Elliptical aggregates dominated by waptiid arthropods, lower Cambrian Maotianshan Shale, Yunnan Province, SW China. Scale bar = 5 mm; a = antenna; c = carapace; fr = furcal rami; is = Isoxys remains; st = segmented trunk; ta = trunk appendages; wa = waptiid remains. (A) Unnumbered
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Figure 1
Published: 23 February 2015
Lagerstätte; 9, Latham Shale; 10, Kinzers Formation; 11, Parker Slate; 12, Sirius Passet; 13, Orsten; 14, Maotianshan Shale.
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FIGURE 1—Exoskeletal accumulations that differ from the three types of aggregates described in this paper from the lower Cambrian, Maotianshan Shale, Yunnan Province, SW China; br = bradoriid; bu = worm burrow; ef = exoskeletal fragments; hy = hyolith conch; tr = trilobite; w = waptiid. Scale bar = 5 mm. (A) Hyolithid conchs and other exoskeletal fragments (e.g., trilobites) oriented by currents, Shankoucun. (B) Condensation layer crowded with small hyolithid shells, Maotianshan. (C) Condensation layer with numerous waptiid carapaces scattered on the bedding-plane surface, Shankoucun
Published: 01 February 2005
FIGURE 1 —Exoskeletal accumulations that differ from the three types of aggregates described in this paper from the lower Cambrian, Maotianshan Shale, Yunnan Province, SW China; br = bradoriid; bu = worm burrow; ef = exoskeletal fragments; hy = hyolith conch; tr = trilobite; w = waptiid. Scale bar
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FIGURE 5—Line drawings of three elliptical aggregates containing bradoriids (Kunmingella) and small hyoliths, lower Cambrian Maotianshan Shale, Yunnan Province, SW China. L, S = axes of elliptical aggregate; ca = conch axis; hl = hinge line of carapace; α = angle between long axis of aggregate (L) and carapace hinge-line (hl) of conch axis (ca). (A) ELRC 23001; same as Fig. 4A. (B) ELRC 23002a, Ma'anshan. (C). Unnumbered specimen (Maotianshan Field Museum), Ma'anshan. (D–F) Rosette diagrams showing orientation of well-preserved skeletal elements from A–C, respectively; n = number of measured specimens
Published: 01 February 2005
FIGURE 5 —Line drawings of three elliptical aggregates containing bradoriids ( Kunmingella ) and small hyoliths, lower Cambrian Maotianshan Shale, Yunnan Province, SW China. L, S = axes of elliptical aggregate; ca = conch axis; hl = hinge line of carapace; α = angle between long axis of aggregate
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Geologic settings of fossil site and composition of fossil assemblage from Chengjiang background mudstone beds (BGB): (A) fossil locality and (B) stratigraphy of Yu’anshan Formation, Haikou, Kunming, China; (C) background beds intercalated with event beds of Maotianshan Shale Member in drill core from Jinning, ~20 km away from Haikou; (D) photograph of sampling quarry; and (E) doughnut plot showing relative abundances of fossil groups. Mb.—Member.
Published: 12 July 2024
Figure 1. Geologic settings of fossil site and composition of fossil assemblage from Chengjiang background mudstone beds (BGB): (A) fossil locality and (B) stratigraphy of Yu’anshan Formation, Haikou, Kunming, China; (C) background beds intercalated with event beds of Maotianshan Shale Member
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Figure 2
Published: 23 February 2015
Slate, n= 7; Sirius Passet, n= 2; Maotianshan Shale, n= 19. Orsten fauna not included in figure because of ambiguous data (see Supplementary Table 1).
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Figure 2.
Published: 24 November 2014
Figure 2. Sclerites of Wiwaxia . (a–d) from the lower Cambrian (Series 2, Stage 3) Maotianshan Shale Member, Yu’anshan Formation ( Eoredlichia–Wudingaspis Zone) in the Mafang section, Haikou near Kunming, Yunnan Province; (e) from the middle Cambrian
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FIGURE 8—Pear-shaped elliptical aggregate containing waptiid remains with hyolith specimens concentrated at one end (see explanation in text), ELRC Sk90001, Shankoucun, lower Cambrian Maotianshan Shale, Yunnan Province, SW China; c = conch; op = operculum. Scale bar = 10 mm in A and B, 5 mm in C. (A, B) General view and line drawing. (C) Close-up view (area indicated by white arrow in A showing small cluster of complete hyoliths (conch and operculum in connection)
Published: 01 February 2005
FIGURE 8 —Pear-shaped elliptical aggregate containing waptiid remains with hyolith specimens concentrated at one end (see explanation in text), ELRC Sk90001, Shankoucun, lower Cambrian Maotianshan Shale, Yunnan Province, SW China; c = conch; op = operculum. Scale bar = 10 mm in A and B, 5 mm in C
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Sedimentological and preservational characteristics within event mudstone layers in the study area (Mafang quarry, Maotianshan Shale Member). A, Polished slabs with multiple background (dark) and event mudstone (light) layers. B, Outstretched and articulated trilobite Eoredlichia intermedia with antennae (arrow). C, Mafangscolex sinensis (priapulid) with proboscis (arrow). D, Lingulid brachiopod Diandongia pista specimen, showing mantle structures. E, Soft-bodied Stellostomites eumorpha (enigmatic animal), showing well-preserved internal alimentary canals in the coiled sac. All scale bars, 1 cm.
Published: 14 October 2013
Figure 2.  Sedimentological and preservational characteristics within event mudstone layers in the study area (Mafang quarry, Maotianshan Shale Member). A, Polished slabs with multiple background (dark) and event mudstone (light) layers. B, Outstretched and articulated trilobite Eoredlichia