Section 2, SM-51, Stanley Mountain, California (Jurassic of the United States)

Where: California (35.1° N, 120.2° W: paleocoordinates 30.5° N, 65.5° W)

• coordinate based on nearby landmark

• hand sample-level geographic resolution

When: Unit 2 Formation (Volcanopelagic Succession Group), Late/Upper Tithonian (150.8 - 145.0 Ma)

• Zone 4 alpha - revision of chronostratigraphic assignment based on Baumgarnter et al. (1995) and Kiessling et al. (1999)

• bed-level stratigraphic resolution

Environment/lithology: basinal (siliceous); lithified limestone

• Manganiferous limestone lens

Size class: microfossils

Preservation: original silica

Collection methods: bulk, hydrochloric,

• Radiolarians only

Primary reference: D. M. Hull. 1997. Upper Jurassic Tethyan and Southern Boreal radiolarians from western North America. Micropaleontology 43(S2):1-202 [W. Kiessling/W. Kiessling/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 50747: authorized by Wolfgang Kiessling, entered by Wolfgang Kiessling on 20.05.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Protozoa
 Nassellaria - Parvicingulidae
Parvicingula obstinata, Parvicingula aff. obstinata, "Praeparvicingula aff. excelsa" = Parvicingula excelsa, Parvicingula colemani, Parvicingula gracila, Parvicingula turrita, Parvicingula bluefordae, Praeparvicingula saltata, Praeparvicingula gemmata, ? Praeparvicingula nebulosa
"Praeparvicingula aff. excelsa" = Parvicingula excelsa Pessagno and Blome 1984 radiolarian
Parvicingula colemani Pessagno and Blome 1984 radiolarian
Parvicingula gracila Hull 1995 radiolarian
Parvicingula turrita Rüst 1898 radiolarian
Parvicingula bluefordae Hull 1995 radiolarian
Praeparvicingula gemmata Hull 1995 radiolarian
? Praeparvicingula nebulosa Hull 1995 radiolarian
 Actinommacea - Xiphostylidae
Suna ehrenbergi
Suna ehrenbergi radiolarian
 Spumellaria - Patulibracchiidae
Homoeoparonaella glinesi, Homoeoparonaella scurrae
 Spumellaria - Orbiculiformidae
Orbiculiforma sp., "Orbiculiforma teres" = Orbiculiformella teres
Orbiculiforma sp. Pessagno 1973 radiolarian
"Orbiculiforma teres" = Orbiculiformella teres Hull 1997 radiolarian
 Spumellaria - Tritrabidae
"Neoparonaella volatica" = Neoparonaella delicata
"Neoparonaella volatica" = Neoparonaella delicata Yang 1993 radiolarian
 Spumellaria - Parvivaccidae
Parvivacca marina, Nolita ramosa, Acusten ordinarius, Acastea dura, Acastea remusa
Parvivacca marina radiolarian
Nolita ramosa radiolarian
Acusten ordinarius radiolarian
Acastea dura radiolarian
Acastea remusa radiolarian
 Spumellaria - Emiluviidae
? Emiluvia pessagnoi
? Emiluvia pessagnoi Foreman 1973 radiolarian
ssp. multipora