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