Toledo Bend Core Microfossils Danville Formation (Eocene of the United States)

Where: Sabine/Newton County, Louisiana/Texas (31.2° N, 93.6° W: paleocoordinates 32.0° N, 85.8° W)

• coordinate estimated from map

When: Danville Landing Member, Late/Upper Eocene (37.2 - 33.9 Ma)

• upper Jacksonian

• group of beds-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; concretionary, gypsiferous, yellow, blue, argillaceous, silty, calcareous claystone

• inner sublittoral zone of a nearshore open-marine environment. The large number of species present and the large number of specimens per unit volume of sediment inidicate favorable living conditiona and a slow rate of deposition. Wilbert (1953) presents a map showing the maximum advance of the Jacksonian sea
• "blue to yellow, calcareous, gypsiferous, fossiliferous, argillaceous, concretionary clay and mudstone."

•

•"data assembled from surface sections and shallow borings indicates a thickness of at least 100ft."

Size classes: macrofossils, microfossils

Preservation: replaced with pyrite

Collection methods: core, sieve,

Primary reference: D. R. Anderson. 1965. Biostratigraphy of the Vicksburgian Equivalent at Toledo Bend Dam Site, Louisiana and Texas. Transactions of The Gulf Coast Association of Geological Societies 15:61-71 [L. Ivany/P. Wall/P. Wall]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 45017: authorized by Linda Ivany, entered by Patrick Wall on 28.09.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Furgenkoina dibollensis
Ostracoda
 Podocopida - Cytherettidae
Cytheretta alexanderi
Cytheretta alexanderi Howe and Chambers 1935 ostracod
 Podocopida - Trachyleberididae
Buntonia israelskyi, Trachyleberis montgomeryensis, Henryhowella floriensis, Brachycythere mississippiensis
 Podocopida - Hemicytheridae
Echinocythereis jacksonensis
 Podocopida - Candonidae
Paracypris franquesi
Paracypris franquesi Howe and Chambers 1935 ostracod
Foraminifera
  - Spiroplectamminidae
Spiroplectammina mississippiensis
Tubothalamea
 Miliolida - Cornuspiridae
Cornuspira sp.
Cornuspira sp. Schultze 1854
 Miliolida - Miliolidae
Pyrgo inornata
Pyrgo inornata
ssp. danvillensis
 Miliolida - Hauerinidae
Triloculina rotunda, Triloculina pinguis, Massilina pratti, Quinqueloculina sp., Quinqueloculina hauerina, Quinqueloculina danvillensis, Quinqueloculina seminulum
Quinqueloculina sp. d'Orbigny 1826
Foraminifera
 Buliminoidea - Buliminidae
Robertina howei, Buliminella elegantissima, Buliminella basistriata, Globobulimina sp.
Globobulimina sp. Cushman 1927
 Rotaliina - Turrilinidae
Turrilina robertsi
 Rotaliina - Bolivinidae
"Bolivina" jacksonensis, "Bolivina" alazanensis, "Bolivina" ouachitaensis, "Bolivina" cf. louisiana, "Bolivina" gracilis
"Bolivina" gracilis Cushman and Applin 1926
 Buliminacea - Siphogenerinoididae
Sagrina howei
 Buliminacea - Uvigerinidae
Uvigerina gardnerae, Uvigerina gardnerae, Uvigerina jacksonensis
Uvigerina gardnerae
ssp. texana
 Rotaliina - Cassidulinidae
Cassidulina armosa
 Rotaliina - Fursenkoinidae
Fursenkoina recta
 Nodosariacea - Glandulinidae
Glandulina laevigata
Glandulina laevigata d'Orbigny 1826
 Rotaliina - Siphoninidae
Siphonina danvillensis, Siphonina jacksonensis
Nodosariata
 Vaginulinida - Vaginulinidae
Lenticulina sp.
Lenticulina sp. Lamarck 1804
 Nodosariida - Nodosariidae
Dentalina communis, Dentalina sp., Lagena laevis, Lagena sp., Lagena ouachitaensis, Lagena substriata
Dentalina sp. d'Orbigny 1826
Lagena sp. Walker and Boys 1784
Lagena substriata Williamson 1848
 Polymorphinida - Polymorphinidae
Globulina gibba, Guttulina austriaca, Guttulina cf. spicaeformis
Globulina gibba d'Orbigny 1832
 Polymorphinida - Plectofrondiculariidae
Plectofrondicularia mexicana
Foraminifera
  - Hantkeninidae
Hantkenina alabamensis
 Globigerinina - Hedbergellidae
Turborotalia cerroasulensis, "Globigerina ampliapertura" = Turborotalia ampliapertura, Globanomalina micra
"Globigerina ampliapertura" = Turborotalia ampliapertura Bolli 1957
  -
Baggatella inconspicua
 Globigerinoidea - Globigerinidae
Globigerina sp., Globigerina danvillensis, Globigerina lineaperta, Globigerina ouachitaensis, Globigerina praebulloides, Globoconusa aff. daubjergensis
Globigerina sp. d'Orbigny 1826
Globigerina lineaperta
ssp. lineaperta
Globigerina ouachitaensis Howe and Wallace 1932
ssp. ouachitaensis
 Globigerinoidea - Globorotaliidae
"Globigerina dutertrei" = Neogloboquadrina dutertrei
"Globigerina dutertrei" = Neogloboquadrina dutertrei d'Orbigny 1839
 Trochamminacea - Trochamminidae
Trochammina teasi, Trochammina sp.
Trochammina sp. Parker and Jones 1859
 Rotalioidea - Elphidiidae
Elphidium sp.
Elphidium sp. Monfort 1808
Globothalamea
 Rotaliida - Nonionidae
Melonis affine, Melonis advena, Florilus danvillensis, Florilus hantkeni, Florilus jacksonensis
 Rotaliida - Cancrisidae
Gyroidinoides danvillensis
 Rotaliida - Discorbidae
Hanzawaia sp., Valvulineria texana, Eponides jacksonensis, Epistominella danvillensis, Discorbis sp., Discorbis jacksonensis
Hanzawaia sp. Asano 1944
Discorbis sp. Lamarck 1804
 Rotaliida - Cibicididae
"Cibicides" jacksonensis
 Rotaliida - Anomalinidae
Anomalinoides bilateralis
Foraminifera
 Lituolida - Haplophragmoididae
Haplophragmoides sp.
Haplophragmoides sp. Cushman 1910
 Lituolida - Lituolidae
Ammobaculites sp., Textularia sp., Textularia cf. cuyleri, Textularia hockleyensis, Ammomarginulina sp.
Ammobaculites sp. Cushman 1910
Textularia sp. Defrance 1824
Ammomarginulina sp. Wiesner 1931