The balancing act of Nipponites mirabilis (Nostoceratidae, Ammonoidea): Managing hydrostatics throughout a complex ontogeny. [PDF]
PLoS ONE, 2020 Nipponites is a heteromorph ammonoid with a complex and unique morphology that obscures its mode of life and ethology. The seemingly aberrant shell of this Late Cretaceous nostoceratid seems deleterious. However, hydrostatic simulations suggest that this
David J Peterman +2 more
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Ontogeny of highly variable ceratitid ammonoids from the Anisian (Middle Triassic) [PDF]
PeerJ, 2021 Ammonoids reached their greatest diversity during the Triassic period. In the early Middle Triassic (Anisian) stage, ammonoid diversity was dominated by representatives of the family Ceratitidae.
Eva Alexandra Bischof +3 more
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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
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The old and the new plankton: ecological replacement of associations of mollusc plankton and giant filter feeders after the Cretaceous? [PDF]
PeerJ, 2018 Owing to their great diversity and abundance, ammonites and belemnites represented key elements in Mesozoic food webs. Because of their extreme ontogenetic size increase by up to three orders of magnitude, their position in the food webs likely changed ...
Amane Tajika +2 more
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Flexispinites nov. gen. (Taramelliceratinae, Ammonoidea)
, 1984 (Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Gerhard Schairer
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RAIMONDICERAS RAIMONDII (GABB, 1877) (AMMONOIDEA): ESTUDIO TAXONÓMICO PRELIMINAR
Biotempo, 2019 De una colección taxonómica de referencia depositada en el Departamento de Paleontología del Museo de Historia Natural “Vera Alleman Haeghebaert” de la Universidad Ricardo Palma, Lima, Perú, se identifi có, registró y describió diez y siete ejemplares del género Raimondiceras Spath, 1924, de los cuales doce ejemplares fueron atribuidos a la especie ...
Vera Alleman Haeghebaert
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Reproductive biology and anatomy of ammonites [PDF]
Scientific ReportsAmmonoid anatomy is still poorly known and every new record of a specimen with soft tissue-preservation yields valuable information. In view of the impressive morphological disparity of ammonoids, we can also expect some disparity in soft tissue anatomy.
Christian Klug +6 more
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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
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Postmortem transport in fossil and modern shelled cephalopods [PDF]
PeerJ, 2018 The chambered shells of cephalopod mollusks, such as modern Nautilus and fossil ammonoids, have the potential to float after death, which could result in significant postmortem transport of shells away from living habitats. Such transport would call into
Margaret M. Yacobucci
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3D-Analysis of a non-planispiral ammonoid from the Hunsrück Slate: natural or pathological variation? [PDF]
PeerJ, 2017 We herein examine the only known non-planispirally coiled early Devonian ammonoid, the holotype specimen of Ivoites opitzi, to investigate if the host was encrusted in vivo and if these sclerobionts were responsible for the trochospiral coiling observed ...
Julia Stilkerich +2 more
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