Observations onAstiericeras astierianum(d'Orbigny, 1842) (Cretaceous Ammonoidea)
Geological Magazine, 1986 AbstractAstiericeras astierianum(d'orbigny, 1842) is redescribed, the type material illustrated for the first time and the range of intraspecific variation and striking sexualdimorphism documented. Previous suggestions that the early ontogeny ofAstiericerassupports derivation fromDouvilleicerasde Grossouvre, 1894 of the Douvilleiceratinae are in error:
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Additional records of scaphitid ammonites from the basal upper Maastrichtian (Upper Cretaceous) of eastern Poland [PDF]
, 2008 New records of rare and/or poorly known scaphitid ammonites are presented from the basal upper Maastrichtian (Upper Cretaceous) white chalk exposed at Chelm quarry, Lublin Upland (eastern Poland).
Dubicka, Z., Jagt, J.W.M., Machalski, M.
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Giant scaphitid ammonites from the Maastrichtian of Europe [PDF]
, 1999 Giant scaphitid ammonites from the Maastrichtian of Europe have generally been assigned to Acanthoscaphites NOWAK, 1911. Prior to the present study, this genus comprised five species: A. tridens (KNER, 1848), A. varians (LOPUSKI, 1911), A. verneuilianus (
Jagt, J.W.M. +2 more
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La posición sistemática del orden Ammonoidea
Revista del Museo de La PlataSi quisiéramos comprobar la influencia de la especialización profesionalsobre la orientación mental de dos clases distintas de estudiosos, podríamospreguntar a un geólogo y a un zoólogo: ? ¿Qué se entiende por Ammonites?
Enrique Fossa Mancini
doaj
Stratigraphical interpretation of Chalk Group macrofossils from Sheet 266 (Marlborough) : May 2011 [PDF]
, 2011 Macrofossils from surface and outcrop exposures of the Chalk Group on Sheet 266 (Marlborough) were collected in May 2011 in connection with the resurvey of that district.
Woods, M.A.
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Ammonites from the latest Aalenian-earliest Bathonian of La Baume (Castellane area, SE France): palaeontology and biostratigraphy [PDF]
, 2018 Middle Jurassic strata are naturally exposed around the village called La Baume, near Castellane (Alpes de Haute Provence, SE France). We have realized both a detailed log and a bed-by-bed sampling for ammonite biostratigraphy in a 68 metres thick ...
Cecca, Fabrizio +3 more
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Spatial distribution of oncocerid cephalopods on a Middle Devonian bedding plane suggests semelparous life cycle. [PDF]
Sci Rep, 2020 Pohle A, Fuchs D, Korn D, Klug C.
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Excursion Le Crétacé de l'Arc de Castellane (SE France) (25- 28 août 2010)
, 2010 International audienceLe développement de la stratigraphie événementielle (événements anoxiques océaniques globaux, " crises tectoniques ", eustatisme, renouvellement biologiques, etc.), conduit à la recherche de référentiels de terrain.
Bulot, Luc Georges +2 more
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The ammonite genus Diaziceras Spath, 1921, from the Campanian of KwaZulu-Natal, South Africa, and Madagascar [PDF]
, 2012 The ammonite genus Diaziceras Spath, 1921, and the type species, D. tissotiaeforme are revised and referred to the subfamily Lenticeratinae Hyatt, 1900, of the family Sphenodiscidae Hyatt, 1900.
Kennedy, William James +1 more
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La posición sistemática del orden Ammonoidea
Revista del Museo de La Plata, 1936 Si quisiéramos comprobar la influencia de la especialización profesional sobre la orientación mental de dos clases distintas de estudiosos, podríamos preguntar a un geólogo y a un zoólogo: —¿Qué se entiende por Ammonites? Con toda probabilidad, el geólogo respondería algo así: —Los ammonites son conchas fósiles, generalmente simétricas y regularmente ...
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