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Quarterly Journal of the Geological Society of London, 1928
With the exception of certain pyritized ammonites from a few horizons, notably the Tropidoceratids discussed below, the specimens from the Belemnite Marls are not in a good state of preservation. Some, like the Polymorphites of the lineatus type, from Bed 112, or Phricodoceras ...
L. Spath
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With the exception of certain pyritized ammonites from a few horizons, notably the Tropidoceratids discussed below, the specimens from the Belemnite Marls are not in a good state of preservation. Some, like the Polymorphites of the lineatus type, from Bed 112, or Phricodoceras ...
L. Spath
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, 2020
A bed-by-bed biostratigraphical study of two key Californian outcrop sections of the Jurassic–Cretaceous transition interval is presented. The studied succession is characterized by the occurrence of abundant buchiid bivalves and a discontinuous ammonite
V. Zakharov, M. Rogov
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A bed-by-bed biostratigraphical study of two key Californian outcrop sections of the Jurassic–Cretaceous transition interval is presented. The studied succession is characterized by the occurrence of abundant buchiid bivalves and a discontinuous ammonite
V. Zakharov, M. Rogov
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Palaios, 2019
Ammonites are iconic members of Jurassic and Cretaceous marine communities, but many questions remain about their ecology. Because it contains a diverse assemblage of well-preserved macro- and microfossils, the upper Maastrichtian Owl Creek Formation ...
K. Ferguson +3 more
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Ammonites are iconic members of Jurassic and Cretaceous marine communities, but many questions remain about their ecology. Because it contains a diverse assemblage of well-preserved macro- and microfossils, the upper Maastrichtian Owl Creek Formation ...
K. Ferguson +3 more
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American Journal of Science, 2018
Ammonites, as well as other fauna, were common in methane seeps of the Late Cretaceous Western Interior Seaway (WIS) of North America. Biogeochemical processes at the seeps, in particular the anaerobic oxidation of methane, produced a dissolved inorganic
N. Landman +6 more
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Ammonites, as well as other fauna, were common in methane seeps of the Late Cretaceous Western Interior Seaway (WIS) of North America. Biogeochemical processes at the seeps, in particular the anaerobic oxidation of methane, produced a dissolved inorganic
N. Landman +6 more
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Volumina Jurassica, 2018
Study of the sections near the Mikhaylov (Ryazan region) has made it possible to improve the infrazonal subdivision of the Middle Callovian – Lower Oxfordian of the European Russia by ammonites.
D. Kiselev, M. Rogov
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Study of the sections near the Mikhaylov (Ryazan region) has made it possible to improve the infrazonal subdivision of the Middle Callovian – Lower Oxfordian of the European Russia by ammonites.
D. Kiselev, M. Rogov
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Cretaceous research (Print), 2017
In a well-exposed succession of Cenomanian through lower Turonian strata at Pecinov (Bohemian Cretaceous Basin, Czech Republic), a detailed study of ammonite and inoceramid assemblages was undertaken for the first time and combined with a revision of ...
M. Košťák +5 more
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In a well-exposed succession of Cenomanian through lower Turonian strata at Pecinov (Bohemian Cretaceous Basin, Czech Republic), a detailed study of ammonite and inoceramid assemblages was undertaken for the first time and combined with a revision of ...
M. Košťák +5 more
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PALAIOS, 1995
Many constructional and taphonomic incongruencies dissolve if ammonites are modeled as active Cartesian divers, whose last septum remained a rubber-like, uncalcified membrane until the next chamber cycle began. If the prochoanitic invagination of the septal mantle served as a gas gland able to produce gas at or above ambient pressure, the chamber ...
A. Seilacher, Michael Labarbera
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Many constructional and taphonomic incongruencies dissolve if ammonites are modeled as active Cartesian divers, whose last septum remained a rubber-like, uncalcified membrane until the next chamber cycle began. If the prochoanitic invagination of the septal mantle served as a gas gland able to produce gas at or above ambient pressure, the chamber ...
A. Seilacher, Michael Labarbera
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The Ammonites of the Green Ammonite Beds of Dorset
Quarterly Journal of the Geological Society of London, 1936I. Introduction. As on previous occasions when I have had the privilege of examining the ammonites of the Lower Lias of Charmouth, collected by Dr. W. D. Lang, I propose to discuss the identifications, given in his stratigraphical account; also to comment on the generic classification and the phylogenetic relationships of the ...
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