UCMP B-2228, San Lorenzo River (Eocene of the United States)

Where: Santa Cruz County, California (37.2° N, 122.1° W: paleocoordinates 36.8° N, 110.1° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Butano Formation, Bartonian (41.3 - 38.0 Ma)

• Stratigraphically 15 feet above center of Butano anticline and 145 feet below top of Butano formation, at stream level, toward top of a 6-foot gray siltstone member.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified siltstone

Size class: macrofossils

Reposited in the UCMP

Primary reference: F. R. Sullivan. 1962. Foraminifera from the type section of the San Lorenzo Formation, Santa Cruz County, California. University of California Publications in Geological Sciences 37(4):233-352 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 185234: authorized by Matthew Clapham, entered by Matthew Clapham on 17.04.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Foraminifera
 Globigerinoidea - Globorotaliidae
Globorotalia crassata
Globorotalia crassata Cushman 1925
ssp. aequa
 Globigerinoidea - Globigerinidae
Globigerina decepta, Globigerina ouachitaensis, "Globigerina triloculinoides" = Subbotina triloculinoides
Globigerina decepta Martin 1943
Globigerina ouachitaensis Howe and Wallace 1932
"Globigerina triloculinoides" = Subbotina triloculinoides Plummer 1926
 Buliminoidea - Buliminidae
Bulimina ovata, Virgulina dibollensis, Virgulina bramlettei, "Bifarina eleganta" = Siphogenerinoides eleganta
Bulimina ovata d'Orbigny 1846
Virgulina dibollensis Cushman and Applin 1926
Virgulina bramlettei Galloway and Morrey 1929
"Bifarina eleganta" = Siphogenerinoides eleganta Plummer 1926
  - Hantkeninidae
Hantkenina alabamensis
 Globigerinaceae - Heterohelicidae
Amphimorphina ignota, Amphimorphina aff. ignota, Rectoguembelina cf. trinitatensis
Amphimorphina ignota Cushman and Siefgus 1939
Amphimorphina aff. ignota Cushman and Siefgus 1939
Rectoguembelina cf. trinitatensis Cushman and Renz 1948
Nodosariata
 Vaginulinida - Vaginulinidae
? Saracenaria cf. acutiauricularis, Lenticulina cf. convergens
? Saracenaria cf. acutiauricularis Fichtel and Moll 1798
 Robertinida - Epistominidae
Epistomina eocenica
Epistomina eocenica Cushman and Hanna 1927
 Nodosariida - Nodosariidae
Frondicularia tenuissima, Lagena vulgaris, Nodosaria pyrula, Nodosaria longiscata, Dentalina spinosa, Dentalina nasuta, Dentalina cf. legumen, Dentalina cooperensis, Dentalina pauperata, Dentalina jarvisi, Dentalina consobrina, Planularia caribbeana, Robulus sp., Robulus cf. terryi, Robulus insuetus, Robulus clericii, Robulus cf. clypeiformis, Robulus alatolimbatus, Robulus kincaidi, Robulus inornatus
Lagena vulgaris Williamson 1848
Nodosaria pyrula d'Orbigny 1826
Nodosaria longiscata d'Orbigny 1846
Dentalina spinosa d'Orbigny 1846
Dentalina nasuta Cushman 1939
Dentalina cooperensis Cushman 1935
Dentalina pauperata d'Orbigny 1846
Dentalina jarvisi Cushman and Todd 1945
Dentalina consobrina d'Orbigny 1846
Planularia caribbeana Bermudez 1949
Robulus sp. Montfort 1808
Robulus cf. terryi Coryell and Embich 1937
Robulus insuetus Cushman and Stainforth 1947
Robulus clericii Fornasini 1895
ssp. acies
Robulus cf. clypeiformis d'Orbigny 1846
Robulus alatolimbatus Guembel 1868
Robulus kincaidi Beck 1943
Robulus inornatus d'Orbigny 1846
 Polymorphinida - Ellipsoidinidae
Ellipsonodosaria "sp. A", Ellipsonodosaria atlantisae, Ellipsonodosaria cf. alexanderi, Ellipsonodosaria spinulosa
Ellipsonodosaria "sp. A" Silvestri 1900
 Polymorphinida - Plectofrondiculariidae
Plectofrondicularia cf. vaughani, Plectofrondicularia trinitatensis, Plectofrondicularia kerni
Plectofrondicularia trinitatensis Cushman and Jarvis 1929
Foraminifera
 Lituolida - Haplophragmoididae
Haplophragmoides obliquicameratus, Haplophragmoides flagleri
Haplophragmoides flagleri Cushman and Hedberg 1941
ssp. trinitatensis
 Lituolida - Lituolidae
Ammobaculites cubensis, Vulvulina curta
Ammobaculites cubensis Cushman and Bermudez 1937
Vulvulina curta Cushman and Siegfus 1935
 Asterigerinacea - Asterigerinidae
Asterigerina crassaformis
Asterigerina crassaformis Cushman and Siegfus 1935
 Buliminacea - Uvigerinidae
Uvigerina garzaensis
Uvigerina garzaensis Cushman and Siegfus 1939
Tubothalamea
 Miliolida - Miliolidae
Spiroloculina lamposa
Foraminifera
 Trochamminacea - Trochamminidae
Trochammina albertensis
Trochammina albertensis Wickenden 1932
 Lituolacea - Ataxophragmiidae
Martinottiella eocenica, Karreriella mediaaquaensis
Martinottiella eocenica Cushman and Bermudez 1947
 Textulariina - Prolixoplectidae
Plectina garzaensis
Plectina garzaensis Cushman and Siegfus 1935
 Astrorhizacea - Rhabdamminidae
Rhabdammina eocenica
Rhabdammina eocenica Cushman and Hanna 1927
 Astrorhizacea - Bathysiphonidae
Bathysiphon eocenica
Bathysiphon eocenica Cushman and Hanna 1927
  - Spiroplectamminidae
Spiroplectammina eocenica
Spiroplectammina eocenica Cushman and Barksdle 1930
  -
Marginulina munda, Pseudoglandulina ovata
Marginulina munda Cushman 1938
Pseudoglandulina ovata Cushman and Applin 1926
  - Chilostomellidae
Pullenia eocenica, Pullenia quinqueloba, Sphaeroidina gredalensis, Chilostomelloides oviformis, Chilostomelloides ovicula, Chilostomella hadleyi
Pullenia eocenica Cushman and Siegfus 1939
Pullenia quinqueloba Reuss 1851
ssp. angusta
Chilostomelloides oviformis Sherborn and Chapman 1886
Chilostomella hadleyi Keijzer 1945
Globothalamea
 Rotaliida - Anomalinidae
Anomalina garzaensis, Anomalinoides cf. globosa
Anomalina garzaensis Cushman and Siegfus 1939
 Rotaliida - Gavelinellidae
Gyroidina orbicularis
Gyroidina orbicularis d'Orbigny 1865
var. planata
 Rotaliida - Eouvigerinidae
Nodogenerina sp., Nodogenerina wegemanni, Nodogenerina adolphina
Nodogenerina adolphina d'Orbigny 1846
 Rotaliida - Discorbidae
Eponides umbonatus, Eponides lodoensis
Eponides umbonatus Reuss 1851
Eponides lodoensis Martin 1943
ssp. martini
 Rotaliida - Cibicididae
Cibicides cushmani
Cibicides cushmani Nuttall 1930