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Naraoia

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<span class="search-highlight">Naraoia</span> ? sp. indet. (IMNH 555&#x2F;1725), collected by L.J. Krumenacker from th...
Published: 01 September 2023
Figure 12. Naraoia ? sp. indet. (IMNH 555/1725), collected by L.J. Krumenacker from the Two-Mile Canyon locality, Spence Shale Member, Langston Formation (Cambrian: Wuliuan), Idaho, USA: ( 1, 2 ) specimen in dorsal view and explanatory drawing. ca, cephalic appendages; cep, cephalon; mk, median
Journal Article
Published: 01 November 2004
Journal of Paleontology (2004) 78 (6): 1138–1145.
...-bottom communities, but were thought to have become extinct in the Late Ordovician. The unique holotype specimen of Naraoia bertiensis n. sp. comes from a Konservat–Lagerstätte deposit renowned for its eurypterid fauna (the Williamsville Member of the Bertie Formation). Naraoia bertiensis lacks thoracic...
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<span class="search-highlight">Naraoia</span> spinosa ?  Zhang and Hou, 1985  from the Yu&#x27;anshan Formation (lower...
Published: 01 October 2014
Fig. 10.— Naraoia spinosa ? Zhang and Hou, 1985 from the Yu'anshan Formation (lower Cambrian series 2, stage 3), Kunming, China (teaching collection, Department of Geological Sciences, University of Saskatchewan). A ) Right-posterior portion of the cephalon showing the glabella and caecum
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Figure  3 — <span class="search-highlight">Naraoia</span> bertiensis  n. sp. (ROM 56013) from the Bertie Formatio...
Published: 01 November 2004
Figure 3 — Naraoia bertiensis n. sp. (ROM 56013) from the Bertie Formation. 1 – 3, Part, overall dorsal view (low-angle light). 1, Specimen covered with ammonium chloride. 2, Specimen photographed in natural conditions. 3, Ventral view, detail of the wide cephalic doublure (high-angle
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Figure  4 —Reconstruction of  <span class="search-highlight">Naraoia</span> bertiensis  n. sp. with main axes of ...
Published: 01 November 2004
Figure 4 —Reconstruction of Naraoia bertiensis n. sp. with main axes of symmetry
Journal Article
Published: 01 September 2023
Journal of Paleontology (2023) 97 (5): 1025–1048.
...Figure 12. Naraoia ? sp. indet. (IMNH 555/1725), collected by L.J. Krumenacker from the Two-Mile Canyon locality, Spence Shale Member, Langston Formation (Cambrian: Wuliuan), Idaho, USA: ( 1, 2 ) specimen in dorsal view and explanatory drawing. ca, cephalic appendages; cep, cephalon; mk, median...
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Journal Article
Journal: PALAIOS
Published: 01 February 2006
PALAIOS (2006) 21 (1): 15–25.
...? Can Burgess Shale-type deposits be based on the presence of a few nonmineralized carapaces (e.g., Caron et al., 2004 )? Because Naraoia is one of the most widespread and long-ranging (middle Early Cambrian to late Silurian) non-mineralizing arthropods (e.g., Walcott, 1912 , 1931 ; Whittington...
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Journal Article
Published: 10 July 2020
Geological Magazine (2021) 158 (3): 509–517.
... that are comparable to those seen in the Cambrian nektaspid Naraoia . The rare occurrence of T. tazagurtensis sp. nov. in the Fezouata Shale and the distribution of other liwiids suggest that these liwiids were originally minor members of open-marine communities during the Cambrian Period, and migrated into colder...
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Journal Article
Journal: PALAIOS
Published: 01 July 2007
PALAIOS (2007) 22 (4): 360–372.
.... Identifiable, nonbiomineralized taxa include components of a Burgess Shale–type biota with red and green algae, primitive sponges, and the arachnomorph arthropod Naraoia compacta . Also exceptionally preserved are the filamentous appendages of a large ptychopariid trilobite and assemblages of oriented...
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Journal Article
Published: 01 March 2001
Journal of the Geological Society (2001) 158 (2): 211–218.
... been recognized, i.e. Kunmingella–Isoxys–Naraoia assemblage at Chengjiang, Kunmingella – Cricocosmia assemblage at Haikou, and Kunmingella – Wutingaspis – Obolus assemblage at Anning and Wuding. These sites yield new and striking specimens, such as a new tentacular animal, brachiopods with pedicles...
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Journal Article
Journal: Geology
Published: 01 November 1999
Geology (1999) 27 (11): 987–990.
...Christopher Nedin Abstract The giant Cambrian form Anomalocaris is considered to have been a raptoral predator of trilobites. However, doubt has been raised about its ability to successfully predate on strongly biomineralized forms (durophagy). A specimen of the trilobite Naraoia from the Early...
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TABLE 2 —Comparison of Chengjiang and Kaili deposits based on naraoiid ento...
Published: 01 February 2006
TABLE 2 —Comparison of Chengjiang and Kaili deposits based on naraoiid entombment orientations with respect to bedding. P = bedding-parallel, L = laterally compressed specimen parallel to bedding, O = obliquely oriented, V = vertically oriented, F = folded over. Naraoia longicaudata and N
Journal Article
Journal: PALAIOS
Published: 01 July 2010
PALAIOS (2010) 25 (7): 463–467.
... are common in Chengjiang naraoiids and rare in the other two deposits ( Lin, 2006 ). The composition of the three dimensionally preserved gut contents of Naraoia spinosa from Chengjiang was determined by Bergström et al. (2007) based on X-ray diffraction. This study investigates the dark-colored...
FIGURES
Journal Article
Journal: PALAIOS
Published: 01 October 2014
PALAIOS (2014) 29 (10): 512–524.
...Fig. 10.— Naraoia spinosa ? Zhang and Hou, 1985 from the Yu'anshan Formation (lower Cambrian series 2, stage 3), Kunming, China (teaching collection, Department of Geological Sciences, University of Saskatchewan). A ) Right-posterior portion of the cephalon showing the glabella and caecum...
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Journal Article
Journal: Paleobiology
Published: 01 January 2002
Paleobiology (2002) 28 (1): 155–171.
... diverticula in the Upper Cambrian trilobite Pterocephalia , and similarly disposed structures appear to be present in other Cambrian trilobites or their relatives; e.g., Olenoides ( Whittington 1980 ), Naraoia ( Whittington 1977 ), and Phytophilaspis ( Ivantsov 1999 ). Given the case for trilobites...
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Representative fossils from the Mafang quarry. All scale bars, 5 mm. A, Con...
Published: 14 October 2013
, Diandongia pista (brachiopod, BA11-410). E, Archisaccophyllia kunmingensis (cnidarian, BA9-50). F, Naraoia spinosa (arthropod, BA4-289), showing three-dimensional preservation of cephalic diverticulae and midgut. G, Waptia ovata (arthropod, BA10-86) with antennae and eyes preserved. H, Details
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Figure 2. EDX analyses of naraoiids from the Chengjiang (orange line), Kail...
Published: 01 July 2010
on naraoiid diverticulae from the Chengjiang Biota, including Misszhouia longicaudata (YPM 224056, orange line) and Naraoia spinosa (NIGP 147861, blue line), indicated with arrows. Scale bars  =  2 mm.
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Palaeogeographical distribution of nektaspids during the (a) Cambrian, (b) ...
Published: 10 July 2020
 2.7, 2.11). The Silurian species Naraoia bertensis Caron et al . 2004 is marked by asterisk. Distribution data based on Whittington ( 1977 ), Robison ( 1984 ), Dzik & Lendzion ( 1988 ), Hammann et al . ( 1990 ), Fortey & Theron ( 1994 ), Hou & Bergström ( 1997 ), Chen et al . ( 1997
Journal Article
Published: 31 July 2014
Geological Magazine (2015) 152 (2): 351–357.
... impressions on the exoskeleton only and that of the digestive tract is hypothetical. (f) Naraoia (Nektaspidida), lower Cambrian, Chengjiang, China. (g) Burgessia , middle Cambrian, Burgess Shale, Canada. Abbreviations: D4 – digestive gland associated...
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Journal Article
Journal: PALAIOS
Published: 01 July 2007
PALAIOS (2007) 22 (4): 448–453.
... the pygidial shield ( Fig. 3G ). In other examples, the arthropods Naraoia and Xandarella usually have their exoskeleton, antennae, exopods, and endopods preserved in separate layers ( Fig. 3H ). The effects of compaction in forming exoskeletal folds have been noted ( Ramsköld et al., 1996 ). Without...
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