B4-Portezuelo Ancho Pass, Bed 1282, Mendoza (Jurassic of Argentina)

Where: Mendoza, Argentina (35.1° S, 70.1° W: paleocoordinates 35.5° S, 30.3° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Puchenque Formation, Pliensbachian (190.8 - 182.7 Ma)

• within the Fanninoceras ammonite Zone

• bed-level stratigraphic resolution

Environment/lithology: marine; sandstone and shale

• sandstones and shales in fining-upward sequences, with coarser sandstones and conglomerates bearing abundanat plant debris near the base; sample from shell bed

Size class: macrofossils

Collection methods: surface (in situ),

Primary reference: S. E. Damborenea. 1987. Early Jurassic Bivalvia of Argentina: Part 1, Stratigraphical introduction and superfamilies Nuculanacea, Arcacea, Mytilacea and Pinnacea. Palaeontographica A199(1-3):23-111 [W. Kiessling/W. Kiessling]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 33733: authorized by Arnold Miller, entered by Karen Layou on 06.08.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
  -
Bivalvia indet.
Bivalvia indet. Linnaeus 1758 clam
 Ostreida - Malleidae
Isognomon sp.
Isognomon sp. Lightfoot 1786 oyster
 Pectinida - Neitheoidae
Weyla unca
Weyla unca Philippi 1899 scallop
 Pectinida - Pectinoidae
Eopecten ? hartzi
Eopecten ? hartzi Rosenkrantz 1957 scallop
Anthozoa
 Scleractinia - Montlivaltiidae
? Montlivaltia sp.
? Montlivaltia sp. Lamouroux 1821 stony coral