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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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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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Normal giants? Temporal and latitudinal shifts of Palaeozoic marine invertebrate gigantism and global change
During and after the Cambrian explosion, very large marine invertebrate species have evolved in several groups. Gigantism in Carboniferous land invertebrates has been explained by a peak inExpand
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High resolution stratigraphy of the Devonian-Carboniferous transitional beds in the Rhenish Mountains
Abstract. The Devonian-Carboniferous Boundary sections at Hasselbachtal, Oese, Apricke, and Ober-Rodinghausen, all located at the northern margin of the Rhenish Mountains, were measured in detail. AExpand
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Evolution of the Goniatitaceae and Visean-Namurian biogeography
Evolutionary lineages within the Carboniferous ammonoid superfamily Goniatitaceae can be recognized using cladistic and stratophenetic analyses, showing that both approaches lead to coincidingExpand
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Die Ammonoideen-Fauna derPlatyclymenia annulata-Zone vom Kattensiepen (Oberdevon, Rheinisches Schiefergebirge)
  • D. Korn
  • Biology, Geography
  • 1 December 2002
KurzfassungVon der Lokalität Kattensiepen bei Warstein-Suttrop wird eine aus elf Arten bestehende Ammonoideen-Fauna derPlatyclymenia annulata-Zone beschrieben:Gundolficeras rotersi n.Expand
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The origin of ammonoid locomotion
Evolution of the coiled ammonoid conch from the uncoiled bactritid conch was probably coupled with changes in ma− noeuvrability and swimming velocity. The gradual transformation of uncoiled to coiledExpand
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