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The Carboniferous Period
Abstract: Only the GSSPs for the Bashkirian (base of the Pennsylvanian), Visean and Tournaisian (base of the Mississippian) have been formalized, although the latter now has complications.
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Morphospace occupation of ammonoids over the Devonian-Carboniferous boundary
KurzfassungIn einer Fallstudie wird eine stratophänetische Analyse der aufeinanderfolgenden Ammonoideen-Faunen aus den Cephalopodenkalken des höchsten Devon und untersten Karbon im RheinischenExpand
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Heterochrony in the evolution of Late Devonian Ammonoids
In the goniatite family Prionoceratidae, the transition from Mirnirnitoceras to Balvia provides a n example of rapid size decrease resulting from progenesis. In the Prionoceras-Mirnirnitoceras stockExpand
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Stratigraphy of the tectonically imbricated lithological succession of the Neves Corvo mine area, Iberian Pyrite Belt, Portugal
Biostratigraphic research, based on palynomorphs and ammonoids, of the tectonically imbricated lithological succession of the Neves Corvo mine, in the Portuguese part of the Iberian Pyrite Belt, hasExpand
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The Devonian nekton revolution
Klug, C., Kroger, B., Kiessling, W., Mullins, G.L., Servais, T., Frýda, J., Korn, D. & Turner, S. 2009: The Devonian nekton revolution. Lethaia, 10.1111/j.1502-3931.2009.00206.x TraditionalExpand
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EARLY EVOLUTIONARY TRENDS IN AMMONOID EMBRYONIC DEVELOPMENT
During the Devonian Nekton Revolution, ammonoids show a progressive coiling of their shell just like many other pelagic mollusk groups. These now extinct, externally shelled cephalopods derived fromExpand
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Palaeotethys seawater temperature rise and an intensified hydrological cycle following the end-Permian mass extinction
Abstract The end-Permian mass extinction has been associated with severe global warming. Main stage volcanism of the Siberian Traps occurred at or near the extinction interval and has been proposedExpand
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The A‐mode sutural ontogeny in prolecanitid ammonoids
The generally accepted theory of a U-mode sutural ontogeny of prolecanitid ammonoids and their descendants is refuted. The basic suture formula of the order Prolecanitida is E A L U I (not E L U2 U1Expand
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