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Psephophorus

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Journal Article
Published: 22 February 2013
Geological Magazine (2013) 150 (5): 767–782.
...MASSIMO DELFINO; TORSTEN M. SCHEYER; FRANCESCO CHESI; TAMARA FLETCHER; RICHARD GEMEL; STEWART MACDONALD; MÁRTON RABI; STEVEN W. SALISBURY Abstract Psephophorus polygonus Meyer, 1847, the first fossil leatherback turtle to be named, was described on the basis of shell ossicles from the middle...
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Journal Article
Published: 01 March 1974
Journal of Paleontology (1974) 48 (2): 279–303.
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Ossicles of  <span class="search-highlight">Psephophorus</span> polygonus  Meyer,  1847  from Devínska Nová Ves (...
Published: 22 February 2013
Figure 1. Ossicles of Psephophorus polygonus Meyer, 1847 from Devínska Nová Ves (Slovakia). (a–d) External, lateral and extremities views of the ossicles forming a longitudinal ridge (MTM V 61.1216/a); note that in lateral view the edge of the ridge
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Overview of thin-sections of the ossicles of  <span class="search-highlight">Psephophorus</span>
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Published: 22 February 2013
Figure 4. Overview of thin-sections of the ossicles of Psephophorus polygonus in normal transmitted light. Note thickness of ossicles and the diploe structure that is retained in all three specimens. (a) Flat polygonal ossicle (NHMW 1848
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Histology of the ossicles of  <span class="search-highlight">Psephophorus</span> polygonus . Images in
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Published: 22 February 2013
Figure 5. Histology of the ossicles of Psephophorus polygonus . Images in (a, c, g) normal transmitted light, (d, e, h) polarized light, and (b, f) in polarized light with additional lambda compensator. (a, b) The external cortex of ossicle
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Comparison of histological sections of flat polygonal and ridge ossicles of...
Published: 22 February 2013
Figure 7. Comparison of histological sections of flat polygonal and ridge ossicles of Psephophorus polygonus and Dermochelys coriacea , with interpretative sketches of the distribution of external and marginal bone tissue versus interior core and internal bone
Journal Article
Published: 26 September 2017
Geological Magazine (2018) 155 (7): 1596–1620.
...), and the histological structure of the bone is spongy ( Fig. 6m ) as described in Psephophorus (Delfino et al . 2013 ). DAK-58/7 is polygonal, elongated (nearly complete), relatively smooth, without either carina or radiate ornamentation ( Fig. 6i , j). The dorsal surface is poorly undulated, roughly marked...
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Journal Article
Published: 23 August 2017
Journal of Paleontology (2017) 91 (6): 1228–1243.
... deposits of South Carolina were two partial carapaces of the dermochelyid turtle Psephophorus . One (ChM PV9102) is from the upper middle Eocene Cross Member of the Tupelo Bay Formation and the other (ChM PV7808) is from the overlying lower upper Eocene Harleyville Formation ( Fig. 1 ; Weems et al., 2016...
Journal Article
Published: 01 July 2013
Journal of Paleontology (2013) 87 (4): 570–588.
... remains are known. Remains of sea turtles are fairly common in the Calvert Formation and represent three taxa. These are the dermochelyid Psephophorus calvertensis Palmer 1909 , the primitive cheloniid Procolpochelys grandaeva ( Leidy 1851 ), and the advanced cheloniid Trachyaspis lardyi...
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Journal Article
Published: 01 November 2004
Journal of Paleontology (2004) 78 (6): 1163–1178.
... and Protostega ; Williston, 1898 ; Wieland, 1906 ). The scapular blade and acromion diverge at an angle of 101 degrees directly above the glenoid cavity. As in some dermochelyids (e.g., Psephophorus Weems, 1974 ) there is no extended or constricted “neck” separating the glenoid from the diverging scapular...
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Journal Article
Published: 01 September 2004
Journal of Paleontology (2004) 78 (5): 989–1013.
..., 1761 ). Prominent fossil taxa representing Dermochelyidae include Eosphargis and Psephophorus from the Eocene of Europe ( Wood et al., 1996 ), whereas Pandermochelys may also include the Cretaceous marine turtles of the Protostegidae ( Hirayama, 1994 , 1998 ). The oldest undisputed...
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Series: GSA Field Guides
Published: 21 March 2019
DOI: 10.1130/2019.0053(01)
EISBN: 9780813756530
... Provenance Hard shell sea turtle (family Cheloniidae) carapace and plastron fragments are found, probably deriving from the Oligocene form Carolinachelys . A single ossicle of the extinct leatherback (Dermochelyidae) Psephophorus sp. is also known from this locality. Fossil birds are represented...
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Journal Article
Published: 01 March 2010
Journal of Paleontology (2010) 84 (2): 231–247.
.... Gans , T. S. Parsons (eds.), Biology of the Reptilia , Volume  4 , Academic Press New York . Weems , R. E. , 1974 , Middle Miocene sea turtles ( Syllomus , Procolpochelys , Psephophorus ) from the Calvert Formation : Journal of Paleontology , 48 . 278 – 303 . Weems , R...
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Series: GSA Field Guide
Published: 01 January 2017
DOI: 10.1130/2017.0047(03)
EISBN: 9780813756479
... Molidae Monacanthidae Mola sp. Ranzania sp. Aluterus sp. Perciformes Labridae Scombridae Sciaenidae Tautoga onitis Thunnus sp. Sciaenops ocellatus Pogonias multidentatus Reptilia Testudines Dermochelyidae Cheloniidae Psephophorus sp. Procolpochelys grandaeva Syllomus aegyptiacus...
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Series: GSA Field Guide
Published: 01 January 2017
DOI: 10.1130/2017.0047(05)
EISBN: 9780813756479
... - - - Scomberomorus sp. - X X X X Sphoeroides sp. - - - - X Sphyraena cf. S. barracuda X X X X - TURTLES Apalone sp. - - - X - Procolopochelys grandaeva - X - - - Psephophorus calvertensis X - - X - Trachyaspis lardyi X X X - X...
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