C4-Arroyo Niraico, North Central Neuquen (Jurassic of Argentina)

Where: Neuquen, Argentina (37.1° S, 70.4° W: paleocoordinates 35.3° S, 31.3° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Toarcian (182.7 - 174.1 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; carbonate and claystone

• uffs with fossiliferous silicified clays intercalated

Size class: macrofossils

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 33827: authorized by Arnold Miller, entered by Karen Layou on 07.08.2003, edited by Sabine Nürnberg

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Nuculanida - Nuculanidae
Nuculana cf. ovum Sowerby 1825 pointed nut clam
 Mytilida - Mytilidae
 Pectinida - Propeamussiidae
Parvamussium pumilum Lamarck 1819 mud scallop
 Pectinida - Entoliidae
Entolium mapuche Damborenea 2002 scallop
 Pectinida - Neitheoidae
Weyla (Lywea) unca Philippi 1899 scallop
Weyla (Weyla) alata von Buch 1838 scallop
W. (Weyla) alata angustecostata
 Pectinida - Pectinoidae
Eopecten ? hartzi Rosenkrantz 1957 scallop
 Ostreida - Pinnidae
Pinna (Pinna) cf. folium Young and Bird 1822 oyster
 Ostreida -
"Pteriacea indet." = Pterioidea
"Pteriacea indet." = Pterioidea Gray 1847 oyster
 Ostreida - Posidoniidae
 Arcida - Cucullaeidae