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Article: Biostratigraphy and evolution of larger rotaliid foraminifera in the Cretaceous–Palaeogene transition of the southern Oman Mountains

Papers in Palaeontology - Volume 7 Issue 1 - Cover
Publication: Palaeontology
Volume: 7
Part: 1
Publication Date: Febuary 2021
Page(s): 1 26
Author(s): Vicent Vicedo, Raquel Robles‐Salcedo, Josep Serra‐Kiel, Cristian Hidalgo, Philippe Razin, and Carine Grélaud
DOI: 10.1002/spp2.1281
Addition Information

How to Cite

VICEDO, V., ROBLES‐SALCEDO, R., SERRA‐KIEL, J., HIDALGO, C., RAZIN, P., GRéLAUD, C. 2021. . Papers in Palaeontology, 7, 1, 1-26. DOI: /doi/10.1002/spp2.1281

Author Information

  • Vicent Vicedo - Departament de Paleontologia Museu de Ciències Naturals de Barcelona Passeig Picasso s/n 08003 Barcelona Spain
  • Raquel Robles‐Salcedo - Departament de Paleontologia Museu de Ciències Naturals de Barcelona Passeig Picasso s/n 08003 Barcelona Spain
  • Josep Serra‐Kiel - Department of Earth & Ocean Dynamics Facultat de Ciències de la Terra Universitat de Barcelona Martí Franquès s/n 08028 Barcelona Spain
  • Cristian Hidalgo - Departament de Paleontologia Museu de Ciències Naturals de Barcelona Passeig Picasso s/n 08003 Barcelona Spain
  • Philippe Razin - ENSEGID, Bordeaux INP, G&E, EA, 4592 University of Bordeaux III allée F. Daguin 33607 Pessac Cedex France
  • Carine Grélaud - ENSEGID, Bordeaux INP, G&E, EA, 4592 University of Bordeaux III allée F. Daguin 33607 Pessac Cedex France

Publication History

  • Issue published online: 08 March 2021
  • Manuscript Accepted: 24 April 2019
  • Manuscript Received: 11 October 2018

Funded By

Museu de Ciències Naturals de Barcelona (MCNB)

Online Version Hosted By

Wiley Online Library
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Abstract

A site in the western flank of Jabal Ja'alan (Oman Mountains) reveals an exceptional succession across the Cretaceous–Palaeogene boundary. The sampled interval comprises a series of carbonates deposited in shallow‐water platform environments and belonging to the Murka Formation, which lies between the Simsima and Abat formations of latest Cretaceous and Thanetian age, respectively. The larger foraminifera recovered from this interval belong essentially to the group of larger rotaliids (Rotaliidae). Two new genera and two new species are here described, Praelockhartia neoakbari gen. et sp. nov. and Rotaliidium parvum gen. et sp. nov. The former shows a very characteristic architecture of an umbilicus with strong piles and two types of umbilical cavities, while the latter has characteristic dorsal supplementary chamberlets. Other species such as Rotalia cf. jacobiRotorbinella hensoniRotospirella conica and Lockhartia sp. complete the rotaliid assemblage. The entire assemblage can be considered to be of late Danian age and to belong to shallow benthic zone SBZ 2. The larger rotaliids appear to have recovered and diversified earlier than any other larger benthic foraminifera in the region after the K–Pg crisis. The rotaliids from the Murka Formation also appear to be linked to the Lockhartiinae and to play a special role in improving our understanding of subsequent diversification in the Lockhartia Sea. A new subfamily, Praelockhartiinae, is erected to accommodate all primitive forms that are architecturally close to lockhartiines.

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