Nummulitic limestone, Valle dell'Onte (Oligocene of Italy)

Where: Italy (45.5° N, 11.8° E: paleocoordinates 42.7° N, 10.1° E)

• outcrop-level geographic resolution

When: Early/Lower Oligocene (33.9 - 28.4 Ma)

• STRATIGRAPHIC RELATIONS: From the coralligneous and nummulitic limestone (unknown lithostratigraphic unit) of the Early Oligocene age that overlies the uppermost part "Marne a briozoi" of the Marna di Priabona Fm. AGE: Early Oligocene. Age justified on the basis of calcareous nannoplankton. STRATIGRAPHIC POSITION: From an outcrop of approximately 5 m thickness at the base (immediately above underlying Late Eocene marl), within 40 m thick local section.

• bed-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified, shelly/skeletal, calcareous limestone

• ENVIRONMENT: Shallow marine carbonate reef environment.
• SPECIFIC LITHOLOGY: Nummulitic and coral-rich limestoe. LITHIFICATION: Lithified, on the basis of figured specimens.

Size class: macrofossils

Collection methods: surface (in situ),

• COLLECTOR: Unknown. REPOSITORY: Padova University, Italy.

Primary reference: M. Fornaseiro and G. Vicariotto. 1995. Fossil cuttlebones in the Vicentinian Priabonian (Late Eocene, Veneto Region, NE Italy). Mem. Sci. Geol. 47:173-178 [A. Hendy/A. Hendy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 81044: authorized by Austin Hendy, entered by Austin Hendy on 28.05.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Includes Bivalvia and Gastropoda. NOMENCLATURE: Nomenclature for molluscs appears slightly antiquated but taxa are identified to species-level.
Bivalvia
 Arcida - Glycymerididae
Glycymeris pulvinata Lamarck 1805 clam
 Pectinida - Pectinoidae
 Cardiida - Chamidae
 Cardiida - Cardiidae
 Lucinida - Lucinidae
Gastropoda
 Architaenioglossa - Ampullinidae
 Neogastropoda - Conidae
Conus diversiformis Deshayes 1824 cone shell
 Cypraeoidea - Cypraeidae
"Cypraea splendens" = Cypraeorbis splendens
"Cypraea splendens" = Cypraeorbis splendens Grateloup 1840 cowry
 Sorbeoconcha - Potamididae
Tympanotonos stroppus Brongniart 1823 horn snail
 Sorbeoconcha - Diastomatidae
Diastoma costellatum Lamarck 1804 snail
 Sorbeoconcha - Cerithiidae
Cerithium calculosum Basterot 1825 cerith snail
 Tectibranchia - Akeridae
 Trochoidea - Trochidae
"Trochus lucasianus" = Tectus lucasianus
"Trochus lucasianus" = Tectus lucasianus Brongniart 1823 top snail