Where: France (47.9° N, 3.6° E: paleocoordinates 38.0° N, 13.8° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Deshayesites forbesi ammonoid zone, Argiles à Plicatules Formation, Early/Lower Aptian (121.4 - 122.5 Ma)

• The accompanying ammonite fauna indicates a stratigraphical position between the top of the Deshayesites forbesi Zone and the Deshayesites deshayesi Zone. However, the preservation of these four specimens, as calcareous moulds of relatively large size, differs from that typically encountered in the form of pyritic nucleus and could be characteristic of a particular level within the Argiles à Plicatules. The holotype of Roloboceras transiens Casey, 1961, with the same preservation and from the same locality, suggests a stratigraphical position of this level in the top of the Deshayesites forbesi Zone, Roloboceras hambrovi Subzone.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified lithology not reported

Size class: macrofossils

Preservation: mold/impression

Reposited in the MNHN

Primary reference: C. Baudouin, G. Delanoy, J. A. Moreno-Bedmar, A. Pictet, J. Vermeulen, G. Conte, R. Gonnet, P. Boselli, and M. Boselli. 2016. Revision of the Early Cretaceous genera Heminautilus Spath, 1927, and Josanautilus Martínez & Grauges, 2006 (Nautilida, Cenoceratidae). Carnets de Géologie 16(5):61-212 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 180753: authorized by Matthew Clapham, entered by Matthew Clapham on 31.07.2016

Creative Commons license: CC BY (attribution)