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Psilonichnus

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Journal Article
Journal: PALAIOS
Published: 01 June 2008
PALAIOS (2008) 23 (6): 370–379.
..., and walking-leg impressions along the burrow walls. The burrows are classified as Psilonichnus isp. based on their morphology and environmental occurrence. In the Ferris Formation, Psilonichnus is found within multistory channel deposits and is associated with lithofacies that indicate strong tidal influence...
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Series: SEPM Short Course Notes
Published: 01 January 2007
DOI: 10.2110/pec.07.52.0335
EISBN: 9781565761407
... fluvial to a lower intertidal sandbar (sandwave) field. The Psilonichnus Ichnofacies in the Iwaki Formation consists of suites comprising the single ichnospecies Psilonichnus quietis (Myo Myint 2001). This reflects an ichnocoenose characterized by the low diversity but high abundance...
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Journal Article
Journal: PALAIOS
Published: 01 April 2006
PALAIOS (2006) 21 (2): 187–196.
...ELIZABETH A. NESBITT; KATHLEEN A. CAMPBELL Abstract The ichnogenus Psilonichnus and its named ichnospecies are evaluated for their utility in paleoenvironmental reconstructions. A combined ichnological-sedimentological model for shoreface-estuarine-fluvial settings is presented herein to show...
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Journal Article
Published: 01 September 2002
Journal of Paleontology (2002) 76 (5): 892–901.
...ELIZABETH A. NESBITT; KATHLEEN A. CAMPBELL Abstract Psilonichnus lutimuratus n. ichnosp. is described from a Pliocene estuarine-mouth depositional environment ( Skolithos ichnofacies) of the Olympic Peninsula, Washington, U.S.A. These simple Y-, I-, and J-shaped, mud-lined burrows occur in situ...
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Journal Article
Published: 01 March 1988
Journal of Paleontology (1988) 62 (2): 168–172.
Journal Article
Published: 01 September 1987
Bulletin of Canadian Petroleum Geology (1987) 35 (3): 333–357.
Journal Article
Published: 01 March 1984
Journal of Paleontology (1984) 58 (2): 333–350.
.... Nonetheless, most such dwelling structures have been studied little and remain essentially unnamed. The ichnogenus Psilonichnus Fuersich is amenable to the taxonomic concept of several forms of crab burrows; presently recognized ichnospecies include P. tubiformis Fuersich and P. upsilon (n. ichnosp...
Journal Article
Journal: PALAIOS
Published: 01 April 2000
PALAIOS (2000) 15 (2): 142–151.
..., rarely branch, and have an unconstricted apertural opening, they have been classified as Psilonichnus upsilo . Type A and B. Psilonichnus upsilo . Type A is generally 1 to 3 cm in diameter and is infilled with laminated sediment. In general, P. upsilo . Type A is observed in ancient point-bar deposits...
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Fast Fourier Transform analysis for  A)  <b>Psilonichnus</b>  from Willapa Bay, Wa...
Published: 01 July 2015
Fig. 5.— Fast Fourier Transform analysis for A) Psilonichnus from Willapa Bay, Washington, and B) Thalassinoides from Miocene Amazonia. In both examples, the frequency that is ascribed to tidally modulated sedimentation is indicated by an asterisk.
Image
FIGURE 4 —Outcrop examples of  <b>Psilonichnus</b>  isp. in the Upper Cretaceous F...
in > PALAIOS
Published: 01 June 2008
FIGURE 4 —Outcrop examples of Psilonichnus isp. in the Upper Cretaceous Ferris Formation, west of Seminoe Reservoir. A) Fine-grained to medium-grained estuarine dunes with Fe-oxide-stained burrows. B) Cross section of elliptical burrow showing Fe-oxide lining. C) Cross section of more circular
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FIGURE 6 —Comparison of Paleocene  <b>Psilonichnus</b>  with Hydrostone casts of m...
in > PALAIOS
Published: 01 June 2008
FIGURE 6 —Comparison of Paleocene Psilonichnus with Hydrostone casts of modern Ocypode quadrata from Galveston, Texas. A) Terminal end of burrow cast of O. quadrata showing bulbous expansion, B) Terminal end of Paleocene specimen from the Ferris Formation
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FIGURE 7 —Tidal facies present in estuarine barforms in which  <b>Psilonichnus</b>...
in > PALAIOS
Published: 01 June 2008
FIGURE 7 —Tidal facies present in estuarine barforms in which Psilonichnus has been found. A) Inclined heterolithic stratification in a Cretaceous channel. B) Fossil logs preserved at the base of a series of estuarine bedforms in a channel. Bedforms in the background are the same as in C. C) Mud
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FIGURE 9 — Camborygma  vs.  <b>Psilonichnus</b> . Photographs and schematic diagra...
in > PALAIOS
Published: 01 June 2008
FIGURE 9 — Camborygma vs. Psilonichnus . Photographs and schematic diagrams of crayfish and crab burrows from casts and published examples ( Hasiotis and Mitchell, 1993 ; Gingras et al., 2000 ), showing key architectural differences. Photograph of Psilonichnus from estuarine barform
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FIGURE 1 —Ichnofacies distribution of the ichnogenus  <b>Psilonichnus</b>  (black ...
in > PALAIOS
Published: 01 April 2006
FIGURE 1 —Ichnofacies distribution of the ichnogenus Psilonichnus (black bar) across an integrated ichnological-sedimentological framework for shoreface to shelf environments in static equilibrium, and for estuarine to fluvial environments in dynamic equilibrium. Note that the substrate
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FIGURE 2 —Diagrams of the four named  <b>Psilonichnus</b>  ichnospecies, redrawn f...
in > PALAIOS
Published: 01 April 2006
FIGURE 2 —Diagrams of the four named Psilonichnus ichnospecies, redrawn from photographs, illustrating ichnotaxonomic characteristics and sedimentological settings. Gray shading=enclosing mudstone or siltstone strata; stippled pattern=sandstone; dark-gray shading=smooth mud lining produced
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Figure  2 —Isolated individual burrows of  <b>Psilonichnus</b> lutimuratus  n. ich...
Published: 01 September 2002
Figure 2 —Isolated individual burrows of Psilonichnus lutimuratus n. ichnosp. collected from UWBM locality B6644, housed for comparative purposes in the Burke Museum collection, University of Washington. Specimen numbers 1 – 3 collected from lower Facies 1 deposits ( Campbell and Nesbitt, 2000
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Figure  3 — 1,  In situ  <b>Psilonichnus</b> lutimuratus  n. ichnosp. in outcrop, ...
Published: 01 September 2002
Figure 3 — 1, In situ Psilonichnus lutimuratus n. ichnosp. in outcrop, North Point Grenville section, Quinault Formation, Washington, U.S.A. Cliff face, vertical section view of densely packed traces (UWBM locality B6644) in wave-rippled to parallel-laminated sandstone, with thin mudstone
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Figure  4 —Stacked horizons of in situ  <b>Psilonichnus</b> lutimuratus  n. ichnos...
Published: 01 September 2002
Figure 4 —Stacked horizons of in situ Psilonichnus lutimuratus n. ichnosp. in vertical section, North of Point Grenville, Washington, U.S.A. (UWBM locality B6644). 1, Detailed drawing (to scale) of ichnofabric. Arrows on diagram mark tide-flood modulated mud drapes that followed storm events
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FIGURE 12 —Photograph of top of  <b>Psilonichnus</b>  “burrow apartments,” overlai...
in > PALAIOS
Published: 01 December 2000
FIGURE 12 —Photograph of top of Psilonichnus “burrow apartments,” overlain by laterally continuous, burrow-free, storm-flood units of wave-rippled to parallel-laminated sandstone (cf. Fig. 11 ) in NPG section. Scale = 11 cm
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FIGURE 1 —Location map of Willapa Bay, Washington.  <b>Psilonichnus</b> upsilo . A...
in > PALAIOS
Published: 01 April 2000
FIGURE 1 —Location map of Willapa Bay, Washington. Psilonichnus upsilo . A and B commonly are observed in outcrop at Bone River and between Goose Point and Pickernell Creek