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 Nürnberg on 17.04.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Nuculanida - Nuculanidae
Nuculana borsoni pointed nut clam
 Trigoniida - Trigoniidae
? Trigonia azzarolae Stoppani 1865 clam
 Trigoniida - Myophoriidae
Myophoria liasica Stoppani 1857 clam
Myophoria inflata Emmrich 1853 clam
 Lucinida - Lucinidae
 Pholadomyida - Pholadomyidae
Pholadomya margaritata Stoppani 1857 clam
"Palaeocardita munita" = Pholadomya munita Stoppani 1857 clam
Homomya lariana Stoppani 1857 clam
 Pandorida - Laternulidae
 Megalodontida - Megalodontidae
 Cardiida - Arcticidae
 Cardiida - Cardiidae
Protocardia rhaetica Merian 1853 cockle
 Cardiida - Palaeocarditidae
 Mytilida - Mytilidae
"Modiolus minutus" = Mytilus minutus Goldfuss 1837 mussel
 Arcida - Parallelodontidae
Parallelodon hettangiensis Terquem 1855 clam
 Ostreida - Pinnidae
 Ostreida - Pteriidae
Rhaetavicula contorta Portlock 1843 pearl oyster
 Ostreida - Bakevelliidae
Gervillia inflata Schafhaeutl 1851 oyster
 Ostreida - Gryphaeidae
 Ostreida - Ostreidae
Lopha haidingeriana Emmrich 1853 oyster
"Ostrea" hinnites Stoppani 1865 oyster
 Pectinida - Dimyidae
Atreta intusstriata Emmrich 1853 scallop
 Pectinida - Limidae
Plagiostoma praecursor Quenstedt 1856 file clam
Plagiostoma punctatum Sowerby 1818 file clam
 Pectinida - Plicatulidae
Plicatula archiaci Stoppani 1865 scallop
 Pectinida - Pectinoidae
"Chlamys valoniensis" = Praechlamys valoniensis Defrance 1825 scallop
 Pectinida - Entolioidesidae
"Entolium cf. hehlii" = Calvaentolium hehlii
"Entolium cf. hehlii" = Calvaentolium hehlii D'Orbigny 1870 scallop
  - Aviculidae
"Pteria deshayesi" = Avicula deshayesi
"Pteria deshayesi" = Avicula deshayesi Terquem 1855 clam