Results 31 to 40 of about 11,709 (248)
Early Cretaceous ammonites and dinoflagellates from the Western Tatra Mountains, Poland [PDF]
Acta Palaeontologica Polonica, 2020 The first Early Cretaceous (Valanginian–Hauterivian) ammonite fauna from the lower part of the Kościeliska Marl Formation (Wściekły Żleb Member) of the Lower Sub-Tatric (Krížna) Nappe, in the Lejowa Valley of the Tatra Mountains are described.
Zdeněk Vašíček +6 more
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Rivista Italiana di Paleontologia e Stratigrafia, 2004 Based on a continuous succession of ammonite and calcareous nannofossil assemblages, the main purpose of this paper is the correlation between ammonite and calcareous nannofossil zone boundaries in two expanded sections from the Basque-Cantabrian area ...
NICOLA PERILLI +2 more
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Evolutionary tradeoffs, Pareto optimality and the morphology of ammonite shells
BMC Systems Biology, 2015 BackgroundOrganisms that need to perform multiple tasks face a fundamental tradeoff: no design can be optimal at all tasks at once. Recent theory based on Pareto optimality showed that such tradeoffs lead to a highly defined range of phenotypes, which ...
Avichai Tendler, A. Mayo, U. Alon
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The ammonites of the Middle Jurassic Cranocephalites beds of East Greenland. Appendix: pages 129-145 [PDF]
Geological Survey of Denmark and Greenland Bulletin, 2015 Appendix: Description of a new Bajocian (Middle Jurassic) ammonite species, Cranocephalites tvaerdalensis sp.nov., from Geographical Society Ø, North-East Greenland. A new Cranocephalites species, C. tvaerdalensis sp. nov., is described.
P. Alsen
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Rivista Italiana di Paleontologia e Stratigrafia, 2004 In the Ricla area (Zaragoza, Aragonese Branch of the Iberian Range), at the top of the Yátova Formation, grey-reddish wackestone limestones grade into yellow-green siliciclastic limestones of the Aldealpozo Formation.
SIXTO R. FERNÁNDEZ-LÓPEZ +1 more
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, 2017 A juvenile specimen of the ammonite Pseudaspidoceras from the Early Turonian of the Goulmima area in the Province of Er-Rachida in south-eastern Morocco shows clear evidence of predation by a tooth-bearing vertebrate. Most of the body chamber is missing,
A. Gale, W. Kennedy, D. Martill
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Geologica Carpathica, 2017 Euthymi, Crassicostatum and Callisto ammonite subzones, correlable with Paramimounum, Picteti, and Alpillensis subzones and probably with the Late Berriasian Otopeta Subzone of the Boissieri Standard Zone have been recognized in calcareous clays of the ...
Arkadiev Vladimir V. +6 more
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Rivista Italiana di Paleontologia e Stratigrafia, 2005 In the context of updating biostratigraphic analysis in the Upper Kimmeridgian-lowermost Berriasian from the whole of the Tunisian Dorsale (NE Tunisia), new results obtained from the Jebel Oust reference section are presented.
MABROUK BOUGHDIRI +5 more
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Cretaceous Research, 1981 Abstract Ammonite faunas consisting of Neolobites vibrayeanus (d'Orbigny), Calycoceras (Calycoceras) naviculare (Mantell), C. (Lotzeites(?)) sp., Pseudocalycoceras lattense Thomel, Metoicoceras geslinianum (d'Orbigny) and Euomphaloceras septemseriatum (Cragin) from Saumur, within the type area of the Turonian stage, are described from the collections
Kennedy, W, Juignet, P
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SYNTHESIS OF CALCAREOUS NANNOFOSSIL EVENTS IN TETHYAN LOWER AND MIDDLE JURASSIC SUCCESSIONS
Rivista Italiana di Paleontologia e Stratigrafia, 1999 This paper is a synthesis of calcareous nannofossil biostratigraphy for the Lower and Middle Jurassic of the Mediterranean Province based on several sections from Northern and Central Italy.
EMANUELA MATTIOLI, ELISABETTA ERBA
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