Results 61 to 70 of about 927 (147)

Nouveaux exemples de dimorphisme chez les Ancyloceratina (Ammonoidea) de l'Hauterivien vocontien

, 1995
New examples of dimorphism inside Vocontian Hauterivian Ancyloceratina (Ammonoidea). The existence of dimorphic pairs demonstrated already inside the heteromorphic ammonite populations from Hauterivian and Barremian ages : (Avram, 1984 ; Aguirre-Urreta ...
Ropolo, P., Gonnet, R.
core   +1 more source

Fig. 53. Triainoceratidae from the Red Ironstone Formation, all reproduced from d in The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)

, 2021
Fig. 53. Triainoceratidae from the Red Ironstone Formation, all reproduced from d'Archiac & de Verneuil (1842). A. Sandbergeroceras costatum (d'Archiac & de Verneuil, 1842). B. Sandbergeroceras incertum (d'Archiac & de Verneuil, 1842).
Korn, Dieter, Bockwinkel, Jürgen
core   +1 more source

MIDDLE TRIASSIC CERATITIDS (AMMONOIDEA) COLLECTED BY C. RENZ FROM HYDRA (GREECE)

Rivista Italiana di Paleontologia e Stratigrafia, 2017
This paper  is focused on the description of an assemblage of ceratitids collected more than 50 years ago by C. Renz from the Han-Bulog Limestone of Hydra (Greece), up to the present never described.
MARCO BALINI
doaj   +1 more source

Fig. 17. Pharciceras kayseri Wedekind, 1918, specimen SMF.Mbg.2317 in The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)

, 2021
Fig. 17. Pharciceras kayseri Wedekind, 1918, specimen SMF.Mbg.2317 (Welsch 1913 Coll.) from Oberscheld (Prinzkessel Mine), reproduction from Wedekind (1918: pl. 20 fig. 2).
Korn, Dieter, Bockwinkel, Jürgen
core   +1 more source

The early gephuroceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)

European Journal of Taxonomy, 2022
The ammonoids of the suborder Gephuroceratina from the Roteisenstein (Red Ironstone) Formation of the area around Dillenburg (eastern Rhenish Mountains) are revised, mainly based on historical collections stored in the Museum für Naturkunde, Berlin. The
Dieter Korn, Jürgen Bockwinkel
doaj   +1 more source

Sexual dimorphism in the Bathonian morphoceratid ammonite Polysphinctites tenuiplicatus [PDF]

Acta Palaeontologica Polonica, 2016
Asphinctites tenuiplicatus [M] and Polysphinctites secundus [m] from the Asphinctites tenuiplicatus Zone (Early Bathonian), are usually considered as a sexual dimorphic pair, although authors describe them as separate species.
Horacio Parent, Michał Zatoń
doaj   +1 more source

Data from: An ecomorphospace for the Ammonoidea

, 2017
The fossil conchs of ammonoids provide valuable information about the life habits of this extinct group. A new conch measurement, the apertural surface area, is introduced here along with modelled sizes of the buccal mass and the hyponome, based on ...
Walton, Sonny, Korn, Dieter, Walton, Sonny A.   +2 more
core   +1 more source

L'origine des Hemihoplitidae téthysiens testée par la cladistique (Ancyloceratina, Ammonoidea, Cretaceous inférieur) : un événement migratoire ? [PDF]

, 2014
The Late Barremian Hemihoplitidae (Ancyloceratina, Ammonoidea) are widely known in the northern Tethyan Margin and the Essaouira-Agadir Basin (Morocco). Their rapid evolution and diversification make them one of the key groups for that period, but their ...
Bersac, Stéphane, Bert, Didier
core   +1 more source

Linked collectors and determiners for: The early gephuroceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea).

Natural history specimen data linked to collectors and determiners held within, "The early gephuroceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)".
Bionomia
core   +3 more sources

The stratigraphic position of " Ammonites " consobrinus d'Orbigny (Deshayesitidae, Ammonoidea) in the lower Aptian of Cassis-La Bédoule (SE France)

, 1998
Recent investigations in the Les Fourniers section (La Bédoule), within the historical lower Aptian (Bedoulian) stratotype-area, enabled us to collect complete specimens of Deshayesites consobrinus (d'Orbigny) corresponding to the original illustration ...
Ropolo, P., Cecca, Fabrizio, Gonnet, R.
core   +1 more source