Section 2, SM-50, 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 layer

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 50746: 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
Tripocyclia foremanae, Suna ehrenbergi, Archaeocenosphaera sp.
Tripocyclia foremanae Pessagno et al. 1989 radiolarian
Suna ehrenbergi radiolarian
Archaeocenosphaera sp. Pessagno et al. 1989 radiolarian
 Nassellaria - Hsuidae
Hsuum naturale
Hsuum naturale radiolarian
 Nassellaria - Parvicingulidae
Caneta hsui, Praeparvicingula aff. packsaddlensis, Praeparvicingula saltata, ? Praeparvicingula nebulosa, Praeparvicingula gemmata, Parvicingula broqueta, Parvicingula cf. khabakovi, Parvicingula obstinata, Parvicingula aff. obstinata, Parvicingula whalenae, Parvicingula gracila, Parvicingula corona, Parvicingula cf. corona, "Parvicingula jonesi" = Parvicingula jonesi, "Parvicingula corralensis" = Parvicingula jonesi, Parvicingula turrita, Parvicingula blowi, "Praeparvicingula aff. excelsa" = Parvicingula excelsa, Parvicingula bluefordae
Caneta hsui Pessagno 1977 radiolarian
? Praeparvicingula nebulosa Hull 1995 radiolarian
Praeparvicingula gemmata Hull 1995 radiolarian
Parvicingula gracila Hull 1995 radiolarian
Parvicingula corona Hull 1995 radiolarian
Parvicingula cf. corona Hull 1995 radiolarian
"Parvicingula jonesi" = Parvicingula jonesi Pessagno 1977 radiolarian
"Parvicingula corralensis" = Parvicingula jonesi Pessagno 1977 radiolarian
Parvicingula turrita Rüst 1898 radiolarian
Parvicingula blowi Pessagno 1977 radiolarian
"Praeparvicingula aff. excelsa" = Parvicingula excelsa Pessagno and Blome 1984 radiolarian
Parvicingula bluefordae Hull 1995 radiolarian
 Nassellaria - Amphipyndacidae
Triversus sp.
Triversus sp. Takemura 1986 radiolarian
 Nassellaria - Eucyrtiidae
"Minocapsa horokanaiensis" = Tetracapsa horokanaiensis
"Minocapsa horokanaiensis" = Tetracapsa horokanaiensis Kawabata 1988 radiolarian
 Nassellaria - Ultranaporidae
Napora lomoalta
Napora lomoalta radiolarian
 Nassellaria - Williriedellidae
Zhamoidellum parva, Hiscocapsa acuta
Zhamoidellum parva radiolarian
Hiscocapsa acuta radiolarian
 Spumellaria - Angulobracchiidae
Angulobracchia purisimaensis, Paronaella nipomoensis, Paronaella egregia, "Fluegelium inornata" = Paronaella inornata, Paronaella coalescenda
Angulobracchia purisimaensis Pessagno 1977 radiolarian
Paronaella egregia radiolarian
"Fluegelium inornata" = Paronaella inornata Hull 1997 radiolarian
Paronaella coalescenda Kiessling 1999 radiolarian
 Spumellaria - Emiluviidae
? Emiluvia pessagnoi
? Emiluvia pessagnoi Foreman 1973 radiolarian
ssp. multipora
 Spumellaria - Patulibracchiidae
Homoeoparonaella glinesi, Homoeoparonaella scurrae, Homoeoparonaella elegans, Patulibracchium sp.
Homoeoparonaella elegans Pessagno 1977 radiolarian
ssp. yangi
Patulibracchium sp. Pessagno 1971 radiolarian
 Spumellaria - Parasaturnalidae
Parasaturnalidae indet.
Parasaturnalidae indet. Kozur and Mostler 1972 radiolarian
 Spumellaria - Tritrabidae
Tritrabs exotica, Tritrabs casmaliaensis
Tritrabs exotica Pessagno 1977 radiolarian
Tritrabs casmaliaensis Pessagno 1977 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 incontraria, Nolita ramosa, Parvivacca marina, Parvivacca varica
Acusten ordinarius radiolarian
Acastea dura radiolarian
Acastea incontraria radiolarian
Nolita ramosa radiolarian
Parvivacca marina radiolarian
Parvivacca varica radiolarian
 Spumellaria - Hagiastridae
Crucella theokaftensis, Crucella aff. messinae
Crucella theokaftensis Baumgartner 1980 radiolarian
Crucella aff. messinae Pessagno 1971 radiolarian