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Article . 2025
License: CC BY
Data sources: Datacite
ZENODO
Article . 2025
License: CC BY
Data sources: Datacite
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The Tithonian ammonite fauna of the transect Cerro Lotena-Cerro Granito, Vaca Muerta Formation, Argentina. II. Family Simoceratidae

Authors: Parent, Horacio; Garrido, Alberto C.; Schweigert, Guenter; Scherzinger, Armin;

The Tithonian ammonite fauna of the transect Cerro Lotena-Cerro Granito, Vaca Muerta Formation, Argentina. II. Family Simoceratidae

Abstract

A new female specimen of the genus Volanoceras Geyssant, from the lower Zitteli Zone of the section Cerro Granito-I (southern Neuquén Basin, Argentina) is described as V. krantzense Cantú-Chapa. This specimen shows the sequence of ornamental stages (prosocline ribs with pseudo-furcations – periumbilical and ventrolateral tumid tubercles – periumbilical tubercles and ventrolateral clavi) as is known from the holotype (upper Zitteli Zone), but with slightly different timing and reaching a larger adult size. The large size and tumid sculpture of the present specimen are indicative of an early transient of the species, yet retaining these features closely similar to its ancestor Volanoceras aesinense (Meneghini). The male of the species from the Zitteli Zone of Pampa Tril is refigured, showing the expected complete identity of its phragmocone with that of the female at comparable diameter.

Keywords

Volanoceras krantzense, Sexual dimorphism, Neuquén Basin, Phyletic evolution

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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