San Giovanni Ilarione (Eocene of Italy)

Where: Italy (45.5° N, 11.2° E: paleocoordinates 39.2° N, 9.6° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: CP14a nannofossil zone, Lutetian (47.8 - 41.3 Ma)

• Simultaneous presence of Reticulofenestra umbilicus and Chiasmolithus solitus indicates that the assemblage belongs to the Biozone CP14a of Okada & Bukry (1980) and thus suggests a Lutetian age. (Note: this would be latest Lutetian; PJW.)

• bed-level stratigraphic resolution

Environment/lithology: lithified, shelly/skeletal, yellow limestone

• Yellow biocalcarenite

Size class: macrofossils

Collection methods: Repository: Nicolis collection and Palermo (specimens cannot be found, according to Dieni, 2012)

Primary reference: A. de Gregorio. 1880. Fauna di S. Giovanni Ilarione (Parisiano). Parte 1a: Cefalopodi e Gasteropodi 1-110 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 171516: authorized by Matthew Clapham, entered by Matthew Clapham on 11.07.2015, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Sorbeoconcha - Eocypraeidae
"Cypraea (Aricia) mazzepae n. sp." = Cypropterina mazzepae2
"Cypraea (Aricia) mazzepae n. sp." = Cypropterina mazzepae2 De Gregorio 1880 snail
Cephalopoda
 Nautilida - Hercoglossidae
"Nautilus hilarionis n. sp." = Cimomia hilarionis, Cimomia imperialis1
"Nautilus hilarionis n. sp." = Cimomia hilarionis de Gregorio 1880 nautiloid
Cimomia imperialis1 Sowerby 1812 nautiloid
Part of De Gregorio's Nautilus hilarionis
 Nautilida - Nautilidae
"Nautilus centralis" = Eutrephoceras (Simplicioceras) centrale Sowerby 1812 nautiloid