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Poyato-Ariza, F JAuthorBermúdez-Rochas DAuthor

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March 23, 2021
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Cenomanian transgression in the Basque-Cantabrian Basin (northern Spain) and associated faunal replacement

Publicated to:Cuadernos de geología ibérica = Journal of iberian geology: an international publication of earth sciences. 40 (3): 489-506 - 2014-01-01 40(3), DOI: 10.5209/rev_JIGE.2014.v40.n3.42819

Authors: Lopez-Horgue, M A; Poyato-Ariza, F J; Cavin, L; Bermudez-Rochas, D D

Affiliations

Museum Hist Nat, Dept Geol & Palaeontol, CH-1211 Geneva 6, Switzerland - Author
Natural History Museum of Geneva - Author
Univ Autonoma Madrid, Dept Biol, Unidad Paleontol, E-28049 Madrid, Spain - Author
Univ Basque Country, UPV EHU, Zientzia & Teknol Fak, Leioa 48940, Basque Country, Spain - Author
Univ Cantabria, Fac Educ, Area Didact CC, Santander 39005, Spain - Author
Universidad Autónoma de Madrid - Author
Universidad de Cantabria - Author
Universidad del País Vasco - Author
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Abstract

© 2014, Universidad Complutense de Madrid. All rights reserved. The available data concerning the environmental changes and faunal replacements that occurred during the Cenomanian marine transgression in the North of Iberia are integrated and discussed on the basis of new evidence from the invertebrate and vertebrate fossil record. New stratigraphical data and the reassessment of known stratigraphic sections support the correlation of the Cenomanian carbonate-ramp successions from the Iberian margin to the centre of the Basque-Cantabrian Basin during a major transgressive episode. This new stratigraphical framework is the key to understand the changing oceanographic conditions in the area that resulted from a progressive inundation of the Iberian continental platform. This transgression seems to have triggered major faunal replacements in this particular geographic area, starting out around the Albian-Cenomanian transition. Ammonite faunal replacement led to a new radiation of this group that spread out rapidly until their new decline around the Cenomanian-Turonian boundary. A new record of Calycoceras (Newboldiceras) asiaticum spinosum and the first record of a Pachyrhizodontidae indet. (Actinopterygii, Teleostei, Crossognathiformes) from the Iberian Peninsula are reported here from the Cenomanian basal units of the major Late Cretaceous transgressive episode. The two new specimens come from the same level in an outer marine ramp succession near Amurrio, Basque Country, northern Spain, and are representatives of the Cenomanian faunal turnover. The new record of a pachyrhizodontoid fish from the Cretaceous of Iberia is an indication of the ichthyofaunal replacement in this part of the world. The relict fish faunas from the Early Cretaceous of the former island of Iberia were mostly formed by basal neopterygian taxa closely related to those of the marine Jurassic of other parts of Europe. During the Early-Late Cretaceous transition they were replaced by the teleostean-based new stock that constitutes the basis of the Late Cretaceous, Cenozoic, and Recent faunas.

Keywords

AcanthoceratoideaCenomanianFaunal replacementIberiaMarine transgressionPachyrhizodontidae

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Cuadernos de geología ibérica = Journal of iberian geology: an international publication of earth sciences due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2014, it was in position 16/46, thus managing to position itself as a Q2 (Segundo Cuartil), in the category Geology. Notably, the journal is positioned en el Cuartil Q2 para la agencia Scopus (SJR) en la categoría Geology.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2025-08-07:

  • WoS: 8
  • Scopus: 9

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-08-07:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 12.

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 0.25.
  • The number of mentions on the social network Facebook: 1 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.

Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Switzerland.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: Last Author (BERMUDEZ ROCHAS, DAVID DIDIER).