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

Anomalinidae
  - Anomalinidae
Anomalina garzaensis Cushman and Siegfus 1939
Ellipsonodosaria
  - Ellipsoidinidae
Ellipsonodosaria spinulosa
  - Ellipsoidinidae
Ellipsonodosaria
  - Ellipsoidinidae
Haplophragmiina
 Lituolacea - Haplophragmoiidae
Haplophragmoides flagleri Cushman and Hedberg 1941
ssp. trinitatensis
Ammobaculites cubensis Cushman and Bermudez 1937
Bifarina
  -
Bifarina eleganta Plummer 1926
Chilostomellidae
  - Chilostomellidae
Pullenia quinqueloba Reuss 1851
ssp. angusta
Pullenia eocenica Cushman and Siegfus 1939
Chilostomella hadleyi Keijzer 1945
Rotaliina
 Chilostomellacea - Heterolepidae
 Planorbulinacea - Cibicididae
Cibicides cushmani Nuttall 1930
 Buliminacea - Uvigerinidae
Uvigerina garzaensis Cushman and Siegfus 1939
 Buliminacea - Buliminidae
Bulimina ovata d'Orbigny 1846
Virgulina dibollensis Cushman and Applin 1926
Virgulina bramlettei Galloway and Morrey 1929
 Discorbacea - Eponididae
Eponides lodoensis Martin 1943
ssp. martini
Eponides umbonatus Reuss 1851
 Rotaliacea - Rotaliidae
Gyroidina orbicularis d'Orbigny 1865
var. planata
 Asterigerinacea - Asterigerinidae
Asterigerina crassaformis Cushman and Siegfus 1935
Hantkenina
  -
 Globigerinaceae - Globigerinidae
Globigerina ouachitaensis Howe and Wallace 1932
Globigerina decepta Martin 1943
 Globigerinaceae - Globorotaliidae
Globorotalia crassata Cushman 1925
ssp. aequa
Nodogenerina
  -
Amphimorphina
  -
Amphimorphina ignota Cushman and Siefgus 1939
Amphimorphina aff. ignota Cushman and Siefgus 1939
Spiroplectammina
  - Spiroplectamminidae
Spiroplectammina eocenica Cushman and Barksdle 1930
 Globigerinina - Heterohelicidae
Rectoguembelina cf. trinitatensis Cushman and Renz 1948
Pseudoglandulina
  -
Pseudoglandulina ovata Cushman and Applin 1926
Textulariina
 Astrorhizacea - Rhizamminidae
Rhabdammina eocenica Cushman and Hanna 1927
 Astrorhizacea - Bathysiphonidae
Bathysiphon eocenica Cushman and Hanna 1927
 Textulariacea - Valvulinidae
Martinottiella eocenica Cushman and Bermudez 1947
 Textulariacea - Textulariidae
Vulvulina curta Cushman and Siegfus 1935
 Textulariina - Prolixoplectidae
Plectina garzaensis Cushman and Siegfus 1935
Textulariina
 Trochamminacea - Trochamminidae
Trochammina albertensis Wickenden 1932
Chilostomelloides
  -
Chilostomelloides oviformis Sherborn and Chapman 1886
Robertinina
 Robertinacea - Epistominidae
Epistomina eocenica Cushman and Hanna 1927
Lagenina
 Nodosariacea - Nodosariidae
Nodosaria longiscata d'Orbigny 1846
Nodosaria pyrula d'Orbigny 1826
Lagena vulgaris Williamson 1848
Dentalina spinosa d'Orbigny 1846
Dentalina jarvisi Cushman and Todd 1945
Dentalina consobrina d'Orbigny 1846
Dentalina nasuta Cushman 1939
Dentalina cooperensis Cushman 1935
Dentalina pauperata d'Orbigny 1846
Robulus sp. Montfort 1808
Robulus cf. clypeiformis d'Orbigny 1846
Robulus alatolimbatus Guembel 1868
Robulus clericii Fornasini 1895
ssp. acies
Robulus inornatus d'Orbigny 1846
Robulus cf. terryi Coryell and Embich 1937
Robulus kincaidi Beck 1943
Robulus insuetus Cushman and Stainforth 1947
? Saracenaria cf. acutiauricularis Fichtel and Moll 1798
Planularia caribbeana Bermudez 1949
Marginulina munda Cushman 1938
Plectofrondicularia
  -
Foraminferea
 Miliolida - Spiroloculinidae