Mont-Jean Horizon, Romme, massif des Bornes, Haute-Savoie (Cretaceous of France)

Where: France (46.0° N, 6.6° E: paleocoordinates 35.5° N, 15.3° E)

• coordinate stated in text

• small collection-level geographic resolution

When: Bostan Member (Grès verts helvétiques Formation), Late/Upper Aptian (122.5 - 113.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, phosphatic sandstone

Size class: macrofossils

Preservation: replaced with phosphate

Primary reference: M. Delamette, J. Charollais, D. Decrouez and M. Caron. 1997. Les grès verts helvétiques (Aptien moyen-Albien supérieur) de Haute-Savoie, Valais et Vaud (Alpes occidentales franco-suisses). Publications du Département de Géologie et Paléontologie. Section des Sciences de la Terre 23:1-400 [L. Villier/L. Villier/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 56677: authorized by Loic Villier, entered by Loic Villier on 22.11.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Acanthohoplitidae
Hypacanthoplites plesiotypicus Fritel 1906 ammonite