Snowshoe Formation, Oregon, USA (Locality 516) (Jurassic of the United States)

Where: Oregon (44.0° N, 119.5° W: paleocoordinates 34.8° N, 59.8° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Snowshoe Formation, Bajocian (170.3 - 168.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; gray mudstone and gray lime mudstone

• dark gray mudstone with limestone nodules (dark gray calcilutite)

Size class: microfossils

Primary reference: E. A. Pessagno, Jr. and C.D. Blome. 1980. Upper Triassic and Jurassic Pantanelliinae from California, Oregon, and British Columbia. Micropaleontology 26(3):225-273 [A. Miller/K. Layou/D. Schramm]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 32741: authorized by Arnold Miller, entered by Karen Layou on 14.07.2003, edited by Adam Kocsis

Creative Commons license: CC BY (attribution)

Taxonomic list

• Abundance data given as rare (1-2 specimens); common (3-5 specimens); and abudant (6+ specimens). Data recorded as 1, 3, 6 specimens for rare, common, and abundant, respectively.
Protozoa
 Nassellaria - Parvicingulidae
Parvicingula matura2 Pessagno and Whalen 1982 radiolarian
 Nassellaria - Hsuidae
Hsuum mirabundum2, "Lupherium officerense" = Parahsuum officerense2
Hsuum mirabundum2 Pessagno and Whalen 1982 radiolarian
"Lupherium officerense" = Parahsuum officerense2 Pessagno and Whalen 1982 radiolarian
 Actinommacea - Xiphostylidae
Xiphostylus spp.1 Haeckel 1881 radiolarian
Xiphostylus logdellensis1 Pessagno et al. 1989 radiolarian
 Spumellaria - Pantanelliidae
Gorgansium sp. Pessagno and Blome 1980 radiolarian
Pantanellium sp. Pessagno 1977 radiolarian
Trillus elkhornensis Pessagno and Blome 1980 radiolarian
Zartus dickinsoni n. sp. radiolarian
Zartus imlayi n. sp. radiolarian
Zartus jonesi radiolarian
Zartus sp. Pessagno and Blome 1980 radiolarian
Zartus thayeri n. sp. Pessagno and Blome 1980 radiolarian
Zartus jurassicus Pessagno and Blome 1980 radiolarian
 Spumellaria - Parvivaccidae
Lanubus spp.1 Pessagno and Yang 1989 radiolarian