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Placerias Quarry

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Journal Article
Journal: PALAIOS
Published: 01 October 2000
PALAIOS (2000) 15 (5): 373–386.
...ANTHONY R. FIORILLO; KEVIN PADIAN; CHAYANIN MUSIKASINTHORN Abstract The Placerias Quarry of northeastern Arizona is one of the most diverse Triassic vertebrate fossil localities in the world. Several long-standing hypotheses are tested about depositional environment, paleoecology...
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FIGURE 2 —Carbonate nodule and clay zone of  <b>Placerias</b>  <b>Quarry</b> (with long w...
in > PALAIOS
Published: 01 October 2000
FIGURE 2 —Carbonate nodule and clay zone of Placerias Quarry (with long white pointer showing a carbonate nodule), also showing the overlying clay-rich olive gray mudstone. 135 cm of the mudstone, and 45 cm of the carbonate nodule and clay zone were exposed during the 1992 excavation. The short
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FIGURE 1 —General distribution of 528 recorded skull elements of  <b>Placerias</b>...
in > PALAIOS
Published: 01 October 2000
FIGURE 1 —General distribution of 528 recorded skull elements of Placerias gigas at the Placerias Quarry near St. Johns, Arizona (A). General location of the Placerias Quarry (B). Both maps are from Camp and Welles (1956)
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FIGURE 9 —Element survivorship curves for (A)  <b>Placerias</b> , (B)  Stagonolepi...
in > PALAIOS
Published: 01 October 2000
FIGURE 9 —Element survivorship curves for (A) Placerias , (B) Stagonolepis , (C) Desmatosuchus , and (D) Postosuchus , from the Placerias Quarry. (E) is the element survivorship graph for right elements (white bars), left elements (gray bars), and total number of elements (including fused
Journal Article
Journal: PALAIOS
Published: 01 December 2007
PALAIOS (2007) 22 (6): 598–611.
...MICHELLE M. CASEY; NICHOLAS C. FRASER; MICHAŁ KOWALEWSKI Abstract The Virginia Solite Quarry occurrence of exceptionally abundant and uniquely preserved specimens of the tetrapod Tanytrachelos ahynis offers an opportunity to quantify multiple aspects of vertebrate taphonomy. Presence or absence...
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Journal Article
Journal: PALAIOS
Published: 01 December 2007
PALAIOS (2007) 22 (6): 651–666.
...TIMOTHY S. MYERS; GLENN W. STORRS Abstract The Mother's Day Quarry, in the lower part of the Upper Jurassic Morrison Formation of south-central Montana, contains a low-diversity assemblage dominated by immature diplodocoid sauropods. The sauropod bones lie within a ∼3-m-thick, massive, sandy...
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TABLE 1 —Summary of frequency of bone modification features of a sample of ...
in > PALAIOS
Published: 01 October 2000
TABLE 1 —Summary of frequency of bone modification features of a sample of Placerias bones (N = 300) and other non- Placerias vertebrate taxa (N = 100) from Placerias Quarry, near St. Johns, Arizona. The abbreviations for fracture patterns SP, LO, TR refer to spiral, longitudinal
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FIGURE 8 —Ternary diagram showing the observed versus the predicted frequen...
in > PALAIOS
Published: 01 October 2000
FIGURE 8 —Ternary diagram showing the observed versus the predicted frequencies of Voorhies Groups for the three most common macrovertebrate taxa from Placerias Quarry: Placerias , aetosaurs, and rauisuchians. The predicted frequency points for each taxon were derived from Camp (1956) , Walker
Journal Article
Journal: PALAIOS
Published: 01 October 2015
PALAIOS (2015) 30 (10): 743–757.
... and Eucynodontia had previously not been found in Argentine Triassic quarries. The bonebed is preserved in a mudflow deposit interbedded with calcic-Argillisols in the medial-distal zone of a distributary fluvial system (DFS). The accumulation is characterized by small-sized skeletal fragments (skulls, jaws...
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Journal Article
Published: 01 January 2017
Journal of Paleontology (2017) 91 (1): 162–178.
...Andrew B. Heckert; Nicholas C. Fraser; Vincent P. Schneider Abstract We describe a new species of the aetosaur Coahomasuchus , C . chathamensis , based on an incomplete, but largely articulated, anterior portion of a skeleton recovered from a quarry in the Upper Triassic Pekin Formation of Chatham...
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FIGURE 4 —Photograph of tool marks (A), made during fossil preparation, on ...
in > PALAIOS
Published: 01 October 2000
FIGURE 4 —Photograph of tool marks (A), made during fossil preparation, on a bone from Placerias Quarry, the most common feature found on bones from this site. Photograph of bone illustrating weathering stage 2 (B). Note the extensive cracking of the outer, cortical layer of bone. Photograph
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Distribution of  Paleorhinus  and  Rutiodon -grade phytosaurs (including  L...
Published: 01 July 2005
America. (c) Germanic basin, Europe. In all cases, large black text indicates formation in which taxon point occurrence is recorded. Paleorhinus and Rutiodon co-exist at two or possibly three localities: the Tecovas Formation (alongside Metoposaurus ); the Bluewater Creek Formation at the Placerias
Journal Article
Journal: Geology
Published: 03 January 2020
Geology (2020)
... to coincide with the faunal turn- over. We also included fossil data from the Placerias Quarry in Arizona and Hayden Quarry in New Mexico (Fig. 1), two additional high-precision U-Pb dated localities, to expand our spatial sampling. Analytical Error Analytical error came from three sources...
Series: Geological Society, London, Special Publications
Published: 01 January 2013
DOI: 10.1144/SP379.7
EISBN: 9781862396395
... Gower (2000) questioned the validity of some of Long & Murry’s (1995) identification of material (i.e. Long & Murry 1995 , figs 125 & 136) from the Placerias Quarry to Postosuchus , but I agree with Long and Murry in attributing those elements to Postosuchus , as the morphology...
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Series: Geological Society, London, Special Publications
Published: 01 January 2013
DOI: 10.1144/SP379.3
EISBN: 9781862396395
...; Ramezani et al. 2011 ), Petrified Forest National Park, AZ, USA. (Fig. 1 ). UCMP 28343, partial surangular and articular; loc. A269, Placerias Quarry, upper Blue Mesa Member of the Chinle Formation, c. 223 Ma ( Ramezani et al. 2011 ; Parker & Martz 2011 ), AZ, USA (Fig. 1 ). TTU-P11614...
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Journal Article
Published: 04 November 2005
Canadian Journal of Earth Sciences (2005) 42 (7): 1339–1345.
... biochronology of the Chinle Group (Upper Triassic), western United States . New Mexico Museum of Natural History & Science Bulletin , 3 : 327 – 329 . Lucas S.G. Heckert A.B. Hunt A.P. 1997 . Stratigraphy and biochronological significance of the Late Triassic Placerias Quarry, eastern...
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Journal Article
Published: 01 March 2012
Journal of Paleontology (2012) 86 (2): 368–390.
... is designated NCSM locality NCPALEO1904 and it lies on the east flank of a quarry operation near Moncure in Chatham County, North Carolina (detailed locality data are on file at NCSM) ( Fig. 1 ). Strata exposed at the quarry consisted of ∼33 m of “red-bed” siliciclastics at the time the stratigraphic section...
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Journal Article
Published: 01 July 2005
Geological Magazine (2005) 142 (4): 327–354.
... America. (c) Germanic basin, Europe. In all cases, large black text indicates formation in which taxon point occurrence is recorded. Paleorhinus and Rutiodon co-exist at two or possibly three localities: the Tecovas Formation (alongside Metoposaurus ); the Bluewater Creek Formation at the Placerias...
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Journal Article
Journal: PALAIOS
Published: 01 May 2008
PALAIOS (2008) 23 (5): 289–297.
.... , Padian , K. , and Musikasinthorn , C. , 2000 , Taphonomy and depositional setting of the Placerias Quarry (Chinle Formation: Late Triassic, Arizona) : PALAIOS , 15 . 373 – 386 . Gill , J.R. , and Cobban , W.A. , 1973 , Stratigraphy and geologic history of the Montana Group...
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Series: Geological Society, London, Special Publications
Published: 01 January 2013
DOI: 10.1144/SP379.17
EISBN: 9781862396395
... that taxon also occurs ( Langer 2005 ). The palaeokarst fissure fills of Cromhall Quarry in southern England have produced a single probable aetosaur paramedian osteoderm (AUP 11300: Fraser 1988 ) referred to Aetosaurus by Lucas et al. (1999) , although this identification is questionable based...
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