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Polykladichnus

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Journal Article
Journal: PALAIOS
Published: 22 May 2019
PALAIOS (2019) 34 (5): 271-279.
... of the trace fossil Polykladichnus . Some gutter-like surface traces are similar to the trace fossil Archaeonassa . Perinereis burrows and trails occur mainly in the mixed flat, less frequently in the mud flat or sand flats. Potentially abundant occurrences of some analogous fossil burrows and trails...
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Journal Article
Published: 01 May 2006
Journal of Sedimentary Research (2006) 76 (5): 771-782.
... with bar elevation (i.e., upper, middle, or lower intertidal), tidal-bank slope, and the local hydraulic processes. The distribution of animal traces is also influenced by the duration of intertidal exposure and sedimentation rates. Polykladichnus - and Skolithos -like traces characterize upper-subtidal...
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The distribution of  <b>Polykladichnus</b>.
in > PALAIOS
Published: 22 May 2019
Table 2.— The distribution of Polykladichnus.
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The distribution of  <b>Polykladichnus</b>.
in > PALAIOS
Published: 22 May 2019
Table 2.— The distribution of Polykladichnus.
Journal Article
Journal: PALAIOS
Published: 01 January 2010
PALAIOS (2010) 25 (1): 46-58.
... to Arenicolites and Skolithos , but morphologies resembling Polykladichnus , Planolites , Palaeophycus , and Thalassinoides were formed under differing sedimentary conditions and over different time scales. In the rock record, such ichnological diversity might be interpreted as indicating paleoecological...
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Journal Article
Journal: PALAIOS
Published: 01 July 2007
PALAIOS (2007) 22 (4): 433-438.
..., maintained by open burrows accreted by the animal's mucous. Chironomid-larvae burrows were small and Y-shaped (e.g., Polykladichnus -like) or Y-shaped with basal branches ( Thalassinoides -like) and were 20 cm deep. The larvae moved up and down from the oxygenated zone (“sounding” behavior) to exploit food...
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Series: SEPM Special Publication
Published: 01 January 2007
DOI: 10.2110/pec.07.88.0195
EISBN: 9781565762909
..., Dactyloidites, Didymaulichnus, Diplocraterion, Chondrites, Cruziana, Helminthorhaphe, Macaronichnus, Ophiomorpha, Parahaentzschelinia, Palaeophycus, Planolites, Polykladichnus, Protovirgularia, Rhizocorallium, Rosselia, Schaubcylindrichnus, Scolicia, Siphonichnus, Taenidium, Teichichnus, and Thalassinoides...
FIGURES | View All (13)
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FIGURE 4 —General form of burrows of chironomid larvae at Cooking Lake, Alb...
in > PALAIOS
Published: 01 July 2007
FIGURE 4 —General form of burrows of chironomid larvae at Cooking Lake, Alberta. From left are shown Arenicolites -, Polykladichnus -, and Thalassinoides -like burrows ( Thalassinoides are the two rightmost). Scale indicated is approximately 1–2 cm
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Schematic diagram of an intertidal point-bar assemblage (substrate is silty...
Published: 01 May 2006
of the nereid worm Nereis virens and diversicolor and the bivalve Macoma balthica . Nereis produces Polykladichnus , Palaeophycus , and Planolites -like traces, and Macoma balthica makes burrow forms similar to the ichnogenera Siphonichnus . The middle-intertidal zone is dominated by the amphipod
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Photos of uncommon trace fossils present within the middle McMurray Formati...
Published: 01 March 2016
ethology. (B). A low-diversity trace fossil suite with prominent Teichichnus ( Te ). (C). A low-diversity trace fossil suite with inferred Polykladichnus ( Po ).
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FIGURE 11 —Resin casts taken from A) sandflats of Kouchibouguac Lagoon, and...
in > PALAIOS
Published: 01 January 2009
Arenicolites , Polykladichnus , and Skolithos . B) Very low diversity of burrowing organisms with only Nereis burrows present, which resemble sinuous Skolithos . Burrows are associated with interface feeding at surface, resulting in stellate-feeding impressions ( Fig. 10J )
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Modern traces observed in the Shepody River sediments.  A)  Skolithos  (Sk)...
Published: 01 May 2006
Figure 5 Modern traces observed in the Shepody River sediments. A) Skolithos (Sk) and Polykladichnus (Pk), made by Heteromastus , vertical face, scale = 3 cm. B) Siphonichnus (Si), created by Macoma balthica , vertical face, scale = 3 cm. C) Fin trace (? Undichnia ), plan view, scale
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Photos of modern traces. The black scale bar in all photos is 5 cm long.  A...
Published: 01 April 2012
) deposited during freshet (July 2009). C) Lined Arenicolites-like trace produced by a nereid polychaete (unlined burrows were also observed). The upper left part of the burrow shows a branching morphology, which is typical of Polykladichnus; another burrow type commonly made by nereid polychaetes. D
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FIGURE 5. Burrow morphologies produced by  Alitta virens  in large experime...
in > PALAIOS
Published: 01 January 2010
. D) Y-shaped burrow similar to Polykladichnus . E) Mud-lined, vertical burrow (mlvb) similar to Palaeophycus or Thalassinoides . F) Mud-filled vertical burrows (vb), connecting to mud-lined and mud-filled subhorizontal burrows (hb) at depth; sediment depth  =  70 mm.
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Soft-sediment traces within intertidal mud flat.  A )  Arenicolites  formed...
in > PALAIOS
Published: 01 April 2015
by Cerebratulus sp . Scale bar  =  5 cm. D ) Polykladichnus produced by Nereis sp . Scale bar  =  2.5 cm. E ) Stellate interface deposit feeding trace produced by Nereis sp. Scale bar  =  2 cm. F ) Coenobichnus/Diplichnites surface trace going up the crest of a ripple produced by hermit crabs. Scale bar
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X-radiograph images of box cores and a location map showing the positions o...
Published: 01 April 2012
cores are mainly simple vertical structures, and can be classified as Arenicolites, Skolithos, Palaeophycus, or Polykladichnus. 1) Box core 1 consists of sand (mainly current-rippled sand) and lacks bioturbation. Consequently, annual sedimentation cycles cannot reliably be interpreted. 2) Box core 2
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Various burrow-making organisms observed in the Shepody River point bars. S...
Published: 01 March 2006
to the ichnogenus Siphonichnus ( Si ). C) Bedding-plane view of Siphonichnus ( Si ). D) Nereis virens ( N ) and associated burrows E) resembling the ichnogenus Polykladichnus ( Pk ). F–H) Corophium volutator burrows. F) Very densely packed, U-shaped Corophium burrows. One example shows minor
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X-radiographs of box cores collected from channel bars in Zone 2. The locat...
Published: 01 June 2015
mud with muddy current ripples. Generally bioturbation is of low intensity (BI 1–2) and consists of Planolites , Polykladichnus (Pk), and Skolithos . F) Alternating beds of sandy mud with muddy current ripples and bioturbated (BI 1–2) muds with Planolites and Skolithos . G) Beds of muddy
Image
X-radiographs of box cores collected from channel bars in Zone 1. The locat...
Published: 01 June 2015
bioturbation intensity (BI 1–3). The trace suite consists of diminutive Arenicolites (Ar), Polykladichnus (Pk), and threadworm burrows. Wood debris (wd) occurs near the bottom of the image. C) Current-ripple-laminated and flaser-bedded sand with a thin bedset of bioturbated (BI 2) muddy sand
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X-ray images of box cores (images A to D) and photos (images E to G) taken ...
Published: 01 November 2009
are thin mud flasers. Burrows similar to the trace fossils Planolites (Pl), Polykladichnus (Po), and Skolithos (Sk) crosscut the sedimentary structures. B) Wave ripples (wr) and larger oscillation-generated structures (or) in sand. Lighter-colored horizons indicate more mud-rich beds. Note