The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Per Ahlberg

Per Ahlberg

Professor emeritus

Per Ahlberg

A blind trilobite with Baltic affinities from Cambrian Series 3 of the Iberian Chains, Spain, and its stratigraphical and palaeobiogeographical significance

Author

  • Juan B. Chirivella Martorell
  • Eladio Linan
  • Per Ahlberg
  • Rodolfo Gozalo

Summary, in English

Three cranidia of a conocoryphid trilobite are described from the lower Caesaraugustan Regional Stage (upper part of provisional Cambrian Stage 5 within Cambrian Series 3) in the Iberian Chains, Spain. The material is from the upper part of the Mansilla Formation and the base of the overlying Murero Formation. It closely resembles Bailiella tenuicincta (Linnarsson, 1879), which has previously been described from the Ptychagnostus gibbus (Cambrian Stage 5) and lower P. atavus zones (lower Drumian Stage) of Baltica (Sweden and Bornholm), and from the P. atavus Zone of West Avalonia (Newfoundland). The record of B. cf. tenuicincta from the Mediterranean margin of West Gondwana provides additional evidence for considering the Acado-Baltic region a discrete biogeographical province, at least during the Cambrian 5 and Drumian ages.

Department/s

  • Lithosphere and Biosphere Science

Publishing year

2015

Language

English

Pages

175-180

Publication/Series

GFF

Volume

137

Issue

3

Document type

Journal article

Publisher

Taylor & Francis

Topic

  • Geology

Keywords

  • Trilobites
  • Conocoryphidae
  • systematics
  • correlation
  • palaeobiogeography
  • middle Cambrian
  • Iberian Chains
  • Spain

Status

Published

ISBN/ISSN/Other

  • ISSN: 2000-0863