bed 31 Colle Tordina section (Italy) (Jurassic of Italy)

Where: Ancona, Italy (43.8° N, 13.0° E: paleocoordinates 30.6° N, 19.2° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: superiore Member (Bugarone Formation), Early/Lower Tithonian (150.8 - 145.0 Ma)

• Semiforme Zone

•Bed 30 of the same section does not contain ammonites.

• bed-level stratigraphic resolution

Environment/lithology: basinal (); lithified wackestone

• Pelagic carbonate swell

Size classes: macrofossils, microfossils

Preservation: mold/impression, original calcite, replaced with calcite

Collection methods: quarrying,

• Repository: APAT - Agenzia per la Protezione dell'Ambiente e per i Servizi Tecnici. Collezioni Paleontologiche. Roma

•Museo di Paleontologia. Università "La Sapienza" Roma.

Primary reference: F. Cecca, S. Cresta, G. Pallini and M. Santantonio. 1986. Biostratigrafia ed ammoniti del Dogger-Malm di Colle Tordina (Monti della Rossa, Appennino marchigiano). Bollettino del Servizio Geologico d'Italia 104:177-204 [F. Cecca/F. Cecca/F. Cecca]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 46386: authorized by Fabrizio Cecca, entered by Fabrizio Cecca on 12.01.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

• Phylloceratina and Lytoceratina, quite abundant, are not included in the list because not determined.
unclassified
  -
Cephalopoda
 Ammonitida - Haploceratidae
"Haploceras (Haploceras) carachtheis" = Hypolissoceras carachtheis Zeuschner 1846 ammonite
microconch morphotype
"Haploceras (Haploceras) carachtheis" = Hypolissoceras carachtheis Zeuschner 1846 ammonite
macroconch morphotype elimatum
Pseudolissoceras "A" Spath 1925 ammonite
Pseudolissoceras bavaricum Barthel 1962 ammonite
 Ammonitida - Oppeliidae
 Ammonitida - Ataxioceratidae
"? Subplanitoides mediterraneus" = Usseliceras (Subplanitoides)
"? Subplanitoides mediterraneus" = Usseliceras (Subplanitoides) ammonite
New determination of ammonites previously identified as different forms assigned to "Subplanitoides"
 Ammonitida - Simoceratidae