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marginifera

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Figure  5 — 1–7,  <span class="search-highlight">Marginifera</span> septentrionalis  Tschernyschew, 1902 ;  1,  D...
Published: 01 July 2008
Figure 5 — 1–7, Marginifera septentrionalis Tschernyschew, 1902 ; 1, D-1f-18, ventral view of an incomplete ventral valve, ×2; 2, D-1f-19, posterior view of an incomplete ventral valve, ×2; 3, D-1f-22, ventral view of an incomplete valve, ×2; 4, D-37f-17, posterior view of an incomplete
Image
Reflected-light photomicrographs of selected conodonts from the Famennian s...
Published: 01 October 2011
zones. E) Polygnathus aff. nodocostatus upper view, BHS, middle Palmatolepis crepida to upper P. marginifera zones. F) Polygnathus semicostatus upper view, BHS, middle Palmatolepis crepida to upper P. marginifera zones. G) Polygnathus semicostatus, upper view, BCS, middle Palmatolepis crepida to upper P
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Famennian conodont zonation (CZ) after  Spalletta  et al.  (2017)  with spa...
Published: 29 October 2024
marginifera marginifera ; u , Palmatolepis marginifera utahensis ; v , Scaphiggnathus velifer velifer ; t , Palmatolepis rugosa trachytera . *** Pseudopolygnathus granulosus ; s , Palmatolepis gracilis sigmoidalis ; s , Polygnathus styriacus ; m , Palmatolepis gracilis manca ; e , Palmatolepis
Journal Article
Published: 01 June 1993
Bulletin of Canadian Petroleum Geology (1993) 41 (2): 139–149.
... facies or because of a hiatus in deposition. The Lower crepida to Upper marginifera zones occur in the lower part of the Wabamun Group. The absence of the Uppermost marginifera Zone and Lower and Upper trachytera and Lower and Upper postera zones in the upper part of this group in the Peace River region...
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Fossils from Tyler formation  A.  Jonesina  cf.  arcuata , Left valve (×60)...
Published: 01 August 1959
Plate I. Fossils from Tyler formation A. Jonesina cf. arcuata , Left valve (×60) B. Hilboldtina multiplicata , Right valve (×60) C. Same as B. Dorsal view (×60) D. Cypridopsis fabulina , Right valve (×60) E. Same as D. Dorsal view (×60) F. Marginifera haydenensis , Ventral view (×1.5
Journal Article
Published: 01 February 2004
Journal of Paleontology (2004) 78 (2): 371–387.
... member of the Long Rapids Formation correlates with the Lower to Uppermost crepida zones. A sequence from high in the rhomboidea Zone to within the Lower marginifera to perhaps slightly into the Upper marginifera Zone occurs in the upper member of the formation. Sixteen species are described, of which...
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Journal Article
Journal: Economic Geology
Published: 01 April 1998
Economic Geology (1998) 93 (2): 184–200.
... mineralization events during the middle Famennian: the older event is the Lower-Upper marginifera Zone or "North Trench zone" and "East zone," and the younger event is the Uppermost marginifera-trachytera Zone or "Main zone." The other Gataga deposits, although somewhat less well defined, are roughly...
Journal Article
Published: 01 December 1996
Bulletin of Canadian Petroleum Geology (1996) 44 (4): 683–694.
... les plus supérieures marginifera à trachytera inférieur. La couche d’argilite est recouverte abruptement, par moyen de résidu de déflation pyritisé, par les schistes de faciès, euxinique “au large” des membres inférieurs de schistes des formations Bakken et Exshaw, qui contiennent des conodontes des...
Journal Article
Published: 01 March 1994
Bulletin of Canadian Petroleum Geology (1994) 42 (1): 55–62.
... to Lower marginifera zones. The peritidal and evaporitic carbonates of the lower Costigan are about 34 m thick and do not contain diagnostic fossils. The upper Costigan ranges in thickness between 6 and 8 m and is composed of marine, shallow water limestones that include minor depositional discontinuities...
Published: 01 January 1991
DOI: 10.1130/SPE256-p155
.... Only the lower part of the upper member is exposed, and near Norwood, Michigan, it yielded conodonts of the Lower marginifera Zone. The widespread Famennian floating plant Protosalvinia (Foerstia) has not yet been found in outcrops of the Antrim, and should not be expected to occur except...
Journal Article
Published: 01 January 1968
Journal of Paleontology (1968) 42 (1): 1–32.
...R. E. Grant Abstract Silicified shells with spines preserved allow analysis of spine distribution as a specific character in the genus Marginifera Waagen and confirm validity of Waagen's (1884) six species. The animal lived with the ventral valve down, the adult shell partly buried, but many spines...
Image
Figure  6 —Digital mirrored inverse SEM images of conodont molds in shale m...
Published: 01 January 2009
; 15 , OSU 52,978. 13 , Polygnathus planirostratus Dreesen and Dusar, OSU 52,979. 16 , Polygnathus szulczewskii Matyja, OSU 52,980. 17 , Polygnathus pennatulus Ulrich and Bassler, OSU 52,981. 18, 19, Palmatolepis marginifera marginifera (Helms). 18 , OSU 52,982; 19 , OSU 52,983. 20, 21
Journal Article
Published: 01 September 2000
Journal of Paleontology (2000) 74 (5): 969–975.
... conodonts extends the known range from the triangularis Zone to the marginifera Zone making these the youngest tentaculitids reported to date. This study indicates that in China the tentaculitids Striatostyliolina became extinct in the crepida Zone, Homoctenus in the rhomboidea Zone...
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Journal Article
Published: 01 July 2008
Journal of Paleontology (2008) 82 (4): 811–822.
...Figure 5 — 1–7, Marginifera septentrionalis Tschernyschew, 1902 ; 1, D-1f-18, ventral view of an incomplete ventral valve, ×2; 2, D-1f-19, posterior view of an incomplete ventral valve, ×2; 3, D-1f-22, ventral view of an incomplete valve, ×2; 4, D-37f-17, posterior view of an incomplete...
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Famennian biostratigraphic species. (a)  Palmatolepis triangularis  Sannema...
Published: 25 November 2013
) Palmatolepis glabra prima Ziegler & Huddle, 1969 ; (f) Palmatolepis rhomboidea Sannemann, 1955 ; (g) Palmatolepis gracilis gracilis Branson & Mehl, 1934 ; (h) Palmatolepis marginifera marginifera Helms, 1959 ; (i) Polygnathus glaber bilobatus Ziegler
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Paleogeographic map including upper lower Famennian (Palmatolepis crepida b...
Published: 01 October 2011
FIGURE 3— Paleogeographic map including upper lower Famennian (Palmatolepis crepida biozone) to lower middle Famennian (P. marginifera biozone) facies of the western United States, showing the Dugway Range as well as other localities mentioned in text. RMTS  =  Robert Mountains Thrust System
Journal Article
Published: 01 January 2009
Journal of Paleontology (2009) 83 (1): 70–79.
...; 15 , OSU 52,978. 13 , Polygnathus planirostratus Dreesen and Dusar, OSU 52,979. 16 , Polygnathus szulczewskii Matyja, OSU 52,980. 17 , Polygnathus pennatulus Ulrich and Bassler, OSU 52,981. 18, 19, Palmatolepis marginifera marginifera (Helms). 18 , OSU 52,982; 19 , OSU 52,983. 20, 21...
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Series: Geological Society, London, Special Publications
Published: 01 January 2016
DOI: 10.1144/SP423.3
EISBN: 9781862399556
... Abstract Microvertebrate samples from the Upper Devonian Hojedk section, southeastern Iran, and the Napier Formation, northwestern Australia, have yielded scales of agnathan thelodonts, dated as early/mid-Famennian ( crepida–marginifera/trachytera conodont zones). These scales are referred...
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Journal Article
Published: 29 October 2024
Journal of the Geological Society (2025) 182 (1): jgs2024-125.
... marginifera marginifera ; u , Palmatolepis marginifera utahensis ; v , Scaphiggnathus velifer velifer ; t , Palmatolepis rugosa trachytera . *** Pseudopolygnathus granulosus ; s , Palmatolepis gracilis sigmoidalis ; s , Polygnathus styriacus ; m , Palmatolepis gracilis manca ; e , Palmatolepis...
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Series: Geological Society, London, Special Publications
Published: 01 January 2007
DOI: 10.1144/SP278.11
EISBN: 9781862395268
... and massive shedding of mass flows, conglomerates and turbidites into adjacent pelagic basins. Data from Oulmés and other Meseta regions suggest a timing of tectophases as early Middle Famennian (starting within the marginifera Zone) and Upper Famennian (starting within the Middle expansa Zone...
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