PBDB Collection

Snowshoe Formation, Oregon, USA (Locality 554) (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). samples are from 2 separate limestone nodules

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 32733: 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 abundant (6+ specimens). Data recorded as 1, 3, and 6 specimens for rare, common and abundant respectively.

Show authors, comments, and common names

Protozoa
Spumellaria - Pantanelliidae	Zartus dickinsoni, Zartus jonesi n. sp., Zartus sp., Zartus jurassicus n. sp., Trillus elkhornensis, Gorgansium vallieri, Gorgansium sp., Pantanellium sp. Zartus dickinsoni radiolarian Zartus jonesi n. sp. radiolarian Zartus sp. Pessagno and Blome 1980 radiolarian Zartus jurassicus n. sp. Pessagno and Blome 1980 radiolarian Trillus elkhornensis Pessagno and Blome 1980 radiolarian Gorgansium vallieri radiolarian Gorgansium sp. Pessagno and Blome 1980 radiolarian Pantanellium sp. Pessagno 1977 radiolarian
Spumellaria - Parvivaccidae	Lanubus spp.¹, Lanubus holdsworthi¹ Lanubus spp.¹ Pessagno and Yang 1989 radiolarian Lanubus holdsworthi¹ Pessagno et al. 1989 radiolarian
Actinommacea - Xiphostylidae	Xiphostylus spp.¹, Xiphostylus halli¹, Xiphostylus aff. halli¹, Xiphostylus whalenae¹, Xiphostylus fragilis¹, Archaeocenosphaera spp.¹, Triactoma spp.¹ Xiphostylus spp.¹ Haeckel 1881 radiolarian Xiphostylus halli¹ Pessagno et al. 1989 radiolarian Xiphostylus aff. halli¹ Pessagno et al. 1989 radiolarian Xiphostylus whalenae¹ Pessagno et al. 1989 radiolarian Xiphostylus fragilis¹ Pessagno et al. 1989 radiolarian Archaeocenosphaera spp.¹ Pessagno et al. 1989 radiolarian Triactoma spp.¹ Rüst 1885 radiolarian
Nassellaria - Parvicingulidae	Parvicingula matura² Parvicingula matura² Pessagno and Whalen 1982 radiolarian
Nassellaria - Bagotidae	? Droltus probosus² ? Droltus probosus² Pessagno and Whalen 1982 radiolarian
Nassellaria - Hsuidae	"Lupherium officerense" = Parahsuum officerense², Lupherium snowshoense², Hsuum belliatulum², Hsuum aff. mirabundum² "Lupherium officerense" = Parahsuum officerense² Pessagno and Whalen 1982 radiolarian Lupherium snowshoense² Pessagno and Whalen 1982 radiolarian Hsuum belliatulum² Pessagno and Whalen 1982 radiolarian Hsuum aff. mirabundum² Pessagno and Whalen 1982 radiolarian

¹Pessagno et al. 1989; ²Pessagno and Whalen 1982