Chiaserna - Mt Catria summit road, Maiolica Fm, Bed 273 (Cretaceous of Italy)

Where: Italy (43.5° N, 12.7° E: paleocoordinates 29.8° N, 18.6° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Maiolica Formation, Late/Upper Valanginian (140.2 - 136.4 Ma)

• The uppermost Berriasian to lowermost Hauterivian interval is 140 m thick. 307 beds have been sampled, key-numbered 100 to 407 (bottom to top). Only the ammonite bearing beds are listed. Beds 238-329: S. verrucosum zone, upper Valanginian

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, white lime mudstone

• The pelagic Maiolica Fm is part of the succession that was deposited in a structural basin that originated through rifting in the Lower Jurassic.
• The Maiolica Fm is a well - bedded chertbearing mudstone, white in colour.

Size class: macrofossils

Primary reference: P. Faraoni, D. Flore, A. Marini, G. Pallini, and N. Pezzoni. 1997. Valanginian and early Hauterivian ammonite successions in the Mt Catria group (Central Apennines) and the Lessini Mts (Southern Alps), Italy. Palaeopelagos 7:59-100 [M. Aberhan/S. Nurnberg]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 65540: authorized by Martin Aberhan, entered by Sabine Nürnberg on 22.09.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

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Cephalopoda
 Ammonitida - Neocomitidae
Rodighieroites sp.
Rodighieroites sp. Company 1987 ammonite
 Ammonitida - Olcostephanidae
Valanginites bachelardi