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Phacops rana

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Journal Article
Published: 01 July 1992
Journal of Paleontology (1992) 66 (4): 692-693.
Journal Article
Published: 01 March 1988
Journal of Paleontology (1988) 62 (2): 311-312.
Journal Article
Journal: Paleobiology
Published: 01 January 2013
Paleobiology (2013) 39 (1): 109-122.
... status of this species previously known as Phacops rana , see Struve 1990 ). The specimens were collected by Thomas Whiteley from a single, local assemblage in the Murder Creek bed of the Ludlowville Formation (Devonian Hamilton Group), which outcrops along Murder Creek near Darien, Genesee County, New...
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Trilobite molt ensembles. A) Eldredgeops <b>rana</b> (Green, 1832); Middle Devonia...
in > PALAIOS
Published: 01 May 2012
FIGURE 8— Trilobite molt ensembles. A) Eldredgeops rana (Green, 1832); Middle Devonian, Ledyard Shale; western New York (adapted from Speyer and Brett, 1985 , fig. 3C, p. 91). Trilobites are, on average, ∼2.0 cm across. B) Phacops saberensis torkozensis Schraut, 2000; molt ensemble, showing
Journal Article
Published: 21 July 2015
Geological Magazine (2015) 153 (3): 357-387.
... that tapers further backwards laterally and only 15 dorsoventral files compared to 18 files (maximum 4–5 lenses per file) for Phacops ( Phacops ) turco praecedens. Eldredgeops rana tindoufensis (Burton & Eldredge, 1974 ) from the upper Eifelian – lower Givetian...
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Journal Article
Published: 16 May 2013
Geological Magazine (2013) 150 (6): 1002-1021.
... assigned to Trimerocephalus , Dianops and Phacops sensu lato are described from this area and comparisons are made with closely allied species from Morocco and Europe. The trilobite assemblages of the ‘Argiles de Marhouma’ Formation are considered to be Frasnian–Famennian in age. These new occurrences have...
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Journal Article
Journal: Paleobiology
Published: 01 January 2004
Paleobiology (2004) 30 (3): 471-481.
.... This is quite parallel to the situation Eldredge documented for Phacops rana from New York State ( Eldredge 1972 ). The lack of shape variation in successive populations suggests that neither the reduction of the number of lenses nor the increase in variation of this trait can be imputed to shape change...
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Journal Article
Published: 01 January 2008
Bulletin de la Société Géologique de France (2008) 179 (1): 89-95.
.... ( 1976 ). “ The sensory fields and life mode of Phacops rana (Green, 1832) .” Trans. Roy. Soc. Edinburgh , 69 , 337 – 367 . Schraut G. ( 2000 ). “ Eine neue Unterart von Phacops (Phacops) sparsinodosus Struve , 1970 aus dem Mittel-Devon von Marokko .” Senckenb. lethaea , 80 , 525...
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Journal Article
Journal: PALAIOS
Published: 01 August 2002
PALAIOS (2002) 17 (4): 394-402.
... went unrecognized until Speyer and Brett (1985) published their interpretation of assemblages of Phacops rana (Green) from the Middle Devonian of New York State. Trilobite clusters are composed of articulated exoskeletons, usually of a single species, that represent molts and/or carcasses...
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Journal Article
Published: 01 March 2001
Journal of Paleontology (2001) 75 (2): 346-350.
... Trilobiten . vii + 148 p., 4 pls. Berlin . Clarke , J. M. 1889 . The structure and development of the visual area in the trilobite Phacops rana Green . Journal of Morphology , 2 : 253 – 270 . Clarkson , E. N. K. 1973 . Morphology and evolution of the eye in Upper Cambrian...
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Journal Article
Journal: AAPG Bulletin
Published: 01 October 1957
AAPG Bulletin (1957) 41 (10): 2175-2191.
..., Leptocoelia, Rhipidomella, Leptaena, Camaraotoechia, Schuchertella, Phacops rana Green , Dal-manites meeki Walcott, and Favosites . The Trematospira zone is not known to occur north of the McColley Canyon section, apparently largely if not entirely because of dolomitization of the limestone...
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Journal Article
Journal: Geology
Published: 01 January 2002
Geology (2002) 30 (1): 15-18.
... ichnofabrics : Annual Review of Earth and Planetary Sciences , v. 21 p. 205 – 225 . Eldredge , R.N. , 1972 , Systematics and evolution of Phacops rana (Green, 1832) and Phacops iowensis Delo, 1935 (Trilobita) from the Middle Devonian of North America : American Museum of Natural History...
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Journal Article
Journal: AAPG Bulletin
Published: 01 October 1957
AAPG Bulletin (1957) 41 (10): 2298-2311.
... fossils. —Fossils, except for Centerfield bioherm, locally surprisingly few in Mahantango. Nevertheless, there is sparse Hamilton fauna with such well known fossils as Mucrospirifer mucronatus, Tropidoleptus carinatus , and Phacops rana. Relationships. —The lower beds of the Mahantango grade...
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Journal Article
Published: 01 November 2001
Journal of Paleontology (2001) 75 (6): 1141-1151.
.... One of the first cladograms ever published featuring fossils was used to illustrate inter-relationships between species of the Devonian genus Phacops ( Eldredge, 1972 ). Possibly the first application to a wholly fossil group of the computer-based parsimony analysis known as PAUP—now used routinely...
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Journal Article
Journal: Geology
Published: 01 May 2013
Geology (2013) 41 (5): 607-610.
... to assess their origin. Our collection of spotted trilobites consists of more than 25 mostly complete Eldredgeops rana from five localities within the Middle Devonian (Givetian) Hamilton Group in central and western New York ( Fig. 1 ). The majority of specimens ( n = 23) are from a private creek...
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Journal Article
Journal: Paleobiology
Published: 01 November 2018
Paleobiology (2018) 44 (4): 638-659.
... of Phacops rana (Green, 1832) and Phacops Iowensis Delo, 1935 (Trilobita) from the Middle Devonian of North America . Bulletin of the American Museum of Natural History 147 : 45 – 114 . Eldredge , N. 2001 . The nature and origin of supraspecific taxa revisited—with special reference...
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Journal Article
Journal: Paleobiology
Published: 01 January 2004
Paleobiology (2004) 30 (2): 179-202.
... Phacops rana provided the first explicit application of Mayr's allopatric speciation model to paleontological data, and of course Eldredge and Gould (1972) formally introduced the theory of punctuated equilibria in the following year. The major contributions of this approach have been to emphasize...
FIGURES
Journal Article
Journal: PALAIOS
Published: 01 May 2012
PALAIOS (2012) 27 (5): 326-345.
...FIGURE 8— Trilobite molt ensembles. A) Eldredgeops rana (Green, 1832); Middle Devonian, Ledyard Shale; western New York (adapted from Speyer and Brett, 1985 , fig. 3C, p. 91). Trilobites are, on average, ∼2.0 cm across. B) Phacops saberensis torkozensis Schraut, 2000; molt ensemble, showing...
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