Lombardian Alps, Zu Limestone Formation (Triassic of Italy)

Where: Italy (46.0° N, 10.0° E: paleocoordinates 30.7° N, 14.2° E)

• coordinate estimated from map

• basin-level geographic resolution

When: Zu Limestone Formation, Rhaetian (208.5 - 201.3 Ma)

• formation-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified carbonate and lithified marl

• The Zu Limestone Formation represents a nearly one km-thick sequence of bedded carbonate, marl and shale.

Size class: macrofossils

Primary reference: C. A. McRoberts, C. R. Newton, and A. Allasinaz. 1995. End-triassic bivalve extinction: Lombardian alps, Italy. Historical Biology 9:297-317 [M. Aberhan/S. Nurnberg/S. Nurnberg]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 38168: authorized by Martin Aberhan, entered by Sabine N├╝rnberg on 17.04.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

 Arcida - Parallelodontidae
Parallelodon hettangiensis Terquem 1855 clam
 Pectinida - Entoliidae
 Pectinida - Dimyidae
Atreta intusstriata Emmrich 1853 scallop
 Pectinida - Pectinoidae
"Chlamys valoniensis" = Praechlamys valoniensis Defrance 1825 scallop
 Pectinida - Limidae
Plagiostoma punctatum Sowerby 1818 file clam
 Pectinida - Plicatulidae
 Ostreida - Gryphaeidae
 Ostreida - Ostreidae
 Ostreida - Pteriidae
Pteria deshayesi pearl oyster
Rhaetavicula contorta Portlock 1843 pearl oyster
 Ostreida - Bakevelliidae
 Ostreida - Pinnidae
 Mytilida - Mytilidae
 Megalodontida - Megalodontidae
 Cardiida - Arcticidae
 Cardiida - Palaeocarditidae
 Cardiida - Cardiidae
Protocardia rhaetica Merian 1853 cockle
 Pandorida - Laternulidae
 Pholadomyida - Pholadomyidae
 Lucinida - Lucinidae
 Trigoniida - Myophoriidae
 Trigoniida - Trigoniidae
 Protobranchia - Nuculanidae
Nuculana borsoni pointed nut clam