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Walcott-Rust Quarry

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Journal Article
Published: 01 March 2011
Journal of Paleontology (2011) 85 (2): 369–391.
...James C. Brower Abstract The Walcott-Rust Quarry echinoderm fauna lived at the base of a carbonate ramp in moderately deep water (Benthic Assemblage 5 of Boucot and others) below wave base for all or most storms but within the photic zone. The inhabitants of the soft substrate were buried rapidly...
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Journal Article
Published: 01 July 2010
Journal of Paleontology (2010) 84 (4): 626–645.
... region were positioned high above the seafloor, and incomplete stem segments up to about 800 mm long are known. The Walcott-Rust Quarry cladids all possessed wider food grooves than the camerates, so they were able to catch larger food particles. The column of Calceocrinus barrandii Walcott, 1883...
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Journal Article
Published: 01 January 2008
Journal of Paleontology (2008) 82 (1): 57–77.
...JAMES C. BROWER Abstract Iocrinus trentonensis Walcott, 1883 is characterized by the widest food grooves and the largest covering plates of any of the Walcott-Rust Quarry crinoids, which indicates that the animal captured relatively large food particles with large and widely separated tubefeet...
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Journal Article
Published: 01 January 2005
Journal of Paleontology (2005) 79 (1): 152–174.
.... Variation in number of brachs in the arms of C. varibrachialus is comparable to that of many Ordovician cladids. Specimens of C. varibrachialus from the Kope Formation of the Cincinnati, Ohio, area possess more numerous primibrachs than animals from the Walcott-Rust Quarry, although the two populations...
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Journal Article
Published: 01 March 1999
Journal of Paleontology (1999) 73 (2): 288–305.
...Carlton E. Brett; Thomas E. Whiteley; Peter A. Allison; Ellis L. Yochelson Abstract The Walcott-Rust Quarry, at Trenton Falls. New York, has yielded a large number of well-preserved, fully articulated fossils from the lower third of the Middle Ordovician Rust Formation, Trenton Group. Along...
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Figure  6 —Photographs of  Merocrinus  from <span class="search-highlight">Walcott</span>-<span class="search-highlight">Rust</span> <span class="search-highlight">Quarry</span>; all specim...
Published: 01 July 2010
Figure 6 —Photographs of Merocrinus from Walcott-Rust Quarry; all specimens from MCZ and coated with ammonium chloride. 1 – 4 , M. curtus ( Ulrich, 1879 ), arranged in order of decreasing aboral cup height to display changes in shapes of cup, cup plates, and arm plates: 1 , CD interray
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Figure  5 —Figured specimens of roots and stems from <span class="search-highlight">Walcott</span>-<span class="search-highlight">Rust</span> <span class="search-highlight">Quarry</span>; u...
Published: 01 January 2005
Figure 5 —Figured specimens of roots and stems from Walcott-Rust Quarry; unless otherwise indicated, specimens are from MCZ; crinoids lightly coated with ammonium chloride. 1 – 9, 12, 13, Stems and holdfasts placed in Cincinnaticrinus varibrachialus with little doubt; 1, stem of small
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Figure  13 —Frequency graphs for primi- and secundibrachs of  Cincinnaticri...
Published: 01 January 2005
Figure 13 —Frequency graphs for primi- and secundibrachs of Cincinnaticrinus varibrachialus from the Walcott-Rust Quarry and the Kope Formation in and around Cincinnati, Ohio. Mean, standard deviation, coefficient of variation, range, number of rays or half-rays, and number of specimens: Free
Journal Article
Published: 01 January 2013
Journal of Paleontology (2013) 87 (1): 16–43.
... example. The Dunleith assemblages are much more diverse with greater ecological complexity than seen in the relatively deep water fauna from the Upper Ordovician Trenton Group of the Walcott-Rust Quarry in New York (Benthic Assemblage 5). 22 5 2012 The Paleontological Society 2013 T he...
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Table  2 —Equation data for crown volume and food-gathering system of  Ecte...
Published: 01 January 2008
Table 2 —Equation data for crown volume and food-gathering system of Ectenocrinus simplex (Hall). The equations indicated by a, b, and c are for the Walcott-Rust Quarry, Galena, and Combined samples, respectively. Combined sample equations are only calculated if the equations for the Walcott
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Rarefaction and relative abundance distributions for Dunleith and <span class="search-highlight">Walcott</span>-R...
Published: 01 January 2013
Figure 11 Rarefaction and relative abundance distributions for Dunleith and Walcott-Rust Quarry. 1 , rarefaction graph showing rarefied diversities and upper and lower 95 percent confidence limits; the confidence limits overlap at lower sample sizes but become completely separate at a sample
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Table  3 . Paleoecological data for bryozoans and other organisms from the ...
Published: 01 March 2011
Table 3 . Paleoecological data for bryozoans and other organisms from the Walcott-Rust Quarry. Living bryozoans are filter feeders and the size of the food particles ingested is limited by their mouth size, and this is assumed to apply for fossil forms (McKinney and Jackson, 1991, p. 119–144
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Number of species at various levels within the Dunleith Formation and the W...
Published: 01 January 2013
Table 5 Number of species at various levels within the Dunleith Formation and the Walcott-Rust Quarry.
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Results of rarefaction analyses for Dunleith samples, echinoderm assemblage...
Published: 01 January 2013
Table 2 Results of rarefaction analyses for Dunleith samples, echinoderm assemblages, all samples from Dunleith Formation and Walcott-Rust Quarry.
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Figure  7 —Scatterplots for cup growth of  Cincinnaticrinus varibrachialus ...
Published: 01 January 2005
Figure 7 —Scatterplots for cup growth of Cincinnaticrinus varibrachialus from the Walcott-Rust Quarry. The equations are listed in equations 1–3 of Table 1 . Note wide variation, especially for cup height and proximal cup width
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Table  1 —Equation data for aboral cup, brachs and ramulars of  Ectenocrinu...
Published: 01 January 2008
Table 1 —Equation data for aboral cup, brachs and ramulars of Ectenocrinus simplex (Hall) for Walcott-Rust Quarry sample. Student's t values for exponents that are significantly larger or smaller than the isometric value at the 0.05 and 0.01 probability levels are denoted by * and **
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Figure  15 —Graphs of crown volume and the food gathering system variables ...
Published: 01 January 2008
Figure 15 —Graphs of crown volume and the food gathering system variables for Ectenocrinus simplex . All equations were fitted to the combined samples from the Walcott-Rust Quarry and the Galena Group. The ontogenies of the crinoids from both samples are homogeneous for these relationships
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Figure  8 —Scatterplots for primibrach growth of  Cincinnaticrinus varibrac...
Published: 01 January 2005
Figure 8 —Scatterplots for primibrach growth of Cincinnaticrinus varibrachialus from the Walcott-Rust Quarry. See equations 15 and 16 of Table 1 for statistical data. Brachial width grows more rapidly and shows less variation than brachial height
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Table  3 —Student's  t  values comparing exponents and logarithms of initia...
Published: 01 January 2008
Table 3 —Student's t values comparing exponents and logarithms of initial intercepts of equations for Walcott-Rust Quarry and Galena samples of Ectenocrinus simplex . Degrees of freedom for all tests is 36. Student's t value that is significant at the 0.05 probability level is denoted by *
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Figure  11 —Scatterplots for growth of size and capacity of food-gathering ...
Published: 01 January 2005
Figure 11 —Scatterplots for growth of size and capacity of food-gathering system in Cincinnaticrinus varibrachialus from the Walcott-Rust Quarry. Equations 6, 8, 10, and 12 of Table 2 contain the statistics. All equations consistently overestimate the data for the two smallest specimens