Rosefield Marl Beds, Louisiana: Late Oligocene, Louisiana

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Globigerinidae
Globigerina sp. d'Orbigny 1826
Buliminidae
Buliminella sp. Cushman 1911
Bulimina ovata d'Orbigny 1846
Virgulina vicksburgensis
Bifarina vicksburgensis
Bitubulogerina vicksburgensis
Entosolenia orbignyana
Angulogerina byramensis
Heterohelicidae
Bolivinella subpectinata
Bolivinella vicksburgensis
Nodosariata - Vaginulinida - Vaginulinidae
Saracenaria moresiana
Lenticulina cultrata
Lenticulina vicksburgensis
Lenticulina rotulata Lamarck 1804
Nodosariata - Robertinida - Ceratobuliminidae
Lamarckina byramensis
Nodosariata - Nodosariida - Nodosariidae
Lagena hexagona (Williamson 1848)
Nodosaria vertebralis Brady 1884
Vaginulina sp. d'Orbigny 1826
Dentalina emaciata
Dentalina monroei
Dentalina praecatesbyi
Dentalina pseudoinvolons
Dentalina hantkeni Cushman 1935
Planularia sp. Defrance 1826
Chrysalogonium vicksburgense
Nodosariata - Polymorphinida - Polymorphinidae
Polymorphina advena
Sigmomorphina pulchra
Guttulina byramensis
Globulina gibba d'Orbigny 1832
Elphidiidae
Elphidium poeyanum d'Orbigny 1948
Siphoninidae
Siphonina advena
Asterigerinidae
Asterigerina subacuta
Lepidocyclinidae
Lepidocyclina supera
Planorbulinidae
Planorbulina mediterranensis d'Orbigny 1826
Bolivinidae
Bolivina alazanensis
Bolivina byramensis
Bolivina choctawensis
Bolivina cookei
Bolivina costifera
Rotaliidae
Rotalia byramensis
Reusselidae
Reussella byramensis
Reussella oligocenica
Uvigerinidae
Uvigerina vicksburgensis
Tubothalamea - Miliolida - Hauerinidae
Triloculina byramensis
Triloculina sculptura
Articulina byramensis
Quinqueloculina cookei
Quinqueloculina vicksburgensis
Massilina sp. Schlumberger 1893
Tubothalamea - Miliolida - Miliolidae
Spiroloculina sp. d'Orbigny 1826
Tubothalamea - Miliolida - Cornuspiridae
Cornuspira byramensis
Spiroplectamminidae
Spiroplectammina howei
Spiroplectammina mississippiensis
unclassified
Marginulina sp. d'Orbigny 1826
Globothalamea - Rotaliida - Nonionidae
Nonionella hantkeni
Nonionella tatumi
Nonionella jacksonensis Cushman 1933
Nonion advenum
Nonion decoratum
Nonion alabamense
Globothalamea - Rotaliida - Gavelinellidae
Gyroidina danvillensis
Gyroidina vicksburgensis
Globothalamea - Rotaliida - Discorbidae
Eponides byramensis
Discorbis subaraucana
Buccella vicksburgensis
Globothalamea - Rotaliida - Cibicididae
Cibicides americanus
Cibicides choctawensis
Cibicides lobatulus
Cibicides mississippiensis
Cibicides sassei
Cibicides pseudoungerianus (Cushman 1922)
Spirillinidae
Spirillina vicksburgensis
Actinopteri - Anguilliformes - Congridae
Congridae indet. Kaup 1856
2 elements
originally entered as "Congridae sp."
Gnathophis dissimilis
1 element
Ariosoma sp. Swainson 1838
72 elements
Paraconger sp. Kanazawa 1961
1 element
Pseudophichthys sp. Roule 1915
2 elements
Family Ophichthidae
Actinopteri - Beryciformes - Berycidae
Centroberyx sp. Gill 1862
1 element
Actinopteri - Ophidiiformes - Ophidiidae
"Neobythitinarum" meyeri
24 elements
Family Ophidiidae
Actinopteri - Pleuronectiformes - Paralichthyidae
Citharichthys sp. Bleeker 1862
29 elements
Actinopteri - Sciaenidae
Umbrina aff. gemma
463 elements
Actinopteri - Haemulidae
Haemulidae indet. Gill 1885
1 element
Orthopristis sp. Girard 1858
1 element
Actinopteri - Spariformes - Sparidae
"Sparidarum" sp. Bonaparte 1832
7 elements
Family Sparidae
Actinopteri - Priacanthidae
Pristigenys obliquus
2 elements
Actinopteri - Perciformes - Serranidae
Centropristis sp. Cuvier 1829
2 elements
Actinopteri - Gadiformes - Bregmacerotidae
Bregmaceros sp. Thompson 1840
5 elements
unclassified
Textualaria tumidula
Dicorbitura dignata
Chilogumbelina cubensis
"Ophichthyidarum" brevior
25 elements
Family Ophichthidae
Myripistis sp.
2 elements
? Alatocythereis sp.
juvenile
Cocoaia sp.
Digmocyhere sp.
Parcypris sp.
Triagnulocypris ? gibsonensis
Ostracoda - Podocopida - Cytherideidae
Pontocythere sp.
Ostracoda - Podocopida - Loxoconchidae
Cytheromorpha rosefieldensis Howe and Law 1936
Loxoconcha woodwordensis
Ostracoda - Podocopida - Trachyleberididae
Actinocythereis rosefieldensis
Buntonia huneri
Ostracoda - Podocopida - Candonidae
Paracypris rosefieldensis Howe and Law 1936
Ostracoda - Podocopida - Hemicytheridae
Echinocythereis mcguirti
Jugosocythereis sp.
Ostracoda - Platycopida - Cytherellidae
Cytherella sp. Jones 1849
Ostracoda - Platycopida
Cytherelloidea byramensis Howe and Law 1936
Cytherelloidea chawneri Howe and Law 1936
Gymnolaemata
Gymnolaemata indet. Allman 1856
Gastropoda - Naticidae
Albula sp. Röding 1798
2 elements
Scaphopoda - Dentaliida - Dentaliidae
Dentalium mississippiense (Conrad 1848)
Bivalvia - Pectinida - Pectinidae
Pecten perplanus Morton 1833
byramensis
Anthozoa - Scleractinia - Oculinidae
Archohelia vicksburgensis
Anthozoa - Scleractinia - Dendrophylliidae
Balanophyllia caulifera (Conrad 1848)
see common names

Geography
Country:United States State/province:Louisiana County:Catahoula
Coordinates: 31.9° North, 92.0° West (view map)
Paleocoordinates:32.4° North, 86.6° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period: Paleogene Epoch: Oligocene
Stage: Chattian 10 m.y. bin: Cenozoic 4
Key time interval: Late Oligocene
Age range of interval: 27.82 - 23.03 m.y. ago
Stratigraphy
Geological group:Vicksburg Formation:Mosley Hill Member:Rosefield Marl
Stratigraphy comments: "The Rosefield Marl Beds are Oligocene in age (approximately 34 million years old) and correspond to the P19 planktonic foraminiferal zonation."
Lithology and environment
Primary lithology:shelly/skeletal unlithified marl
Secondary lithology:brown claystone
Includes fossils?Y
Includes fossils?Y
Lithology description: "The Rosefiled Marl Beds consist of several distinct thin layers of a light-colored, highly fossiliferous coquina with intervening light-brown clay layers with few macroscopic fossils."
Environment:offshore shelf Tectonic setting:passive margin
Glacial or sequence phase:transgressive
Geology comments: "The fauna consists of ...with species found in both inner and middle shelf zones ... clay unit, including rare species of deep middle shelf habitats ... suggests a local transgression of the shoreline which introduced the inner, then middle, self species into the sediments with progressive deepening."
Taphonomy
Modes of preservation:body,original calcite
Size of fossils:macrofossils,mesofossils,microfossils
Collection methods and comments
Collection excludes:some macrofossils,some microfossils
Collection methods:bulk,surface (in situ),sieve,field collection
Reason for describing collection:biostratigraphic analysis
Collection method comments: "Bulk and surface sampling were utilized at the type locailty of the Rosefield Marl Beds for this study. Approximately 40kg of sample was collected from the coquina layer (shell bed of early publications) for vertebrated analysis(primarily for fish otoliths). The bulk sample was wet-screened through a 40-mesh sieve and air drid. Microfaunal samples (approximately 1kg) were taken from the coquina layer and a thin clay layer immediately above the coquina. Samples were dried and wet-screened through a 200 mesh screen, heat-dried in an oven then picked for microfauna, including foraminifera, ostracodes, microinvertebrates, and microvertebrates. Systematic surface collections were also utilized at the type locality (the exposure of the coquinia layer is quite limited). Basically all macroscopic remains that were one-half whole or greater were collected."
Metadata
Database number:44521
Authorizer:L. Ivany Enterer:P. Wall
Modifier:A. Hendy Research group:marine invertebrate,vertebrate
Created:2004-09-15 10:42:48 Last modified:2007-02-04 17:39:01
Access level:the public Released:2004-09-15 10:42:48
Creative Commons license:CC BY
Reference information

Primary reference:
11673. G. L. Stringer, S. Q. Breard, and M. Kontrovitz. 2001. Biostratigraphy and Paleoecology of Diagnostic Invertebrates and Vertebrates from the Type Locality of the Oligocene Rosefiled Marl Beds, Louisiana. Gulf Coast Association of Geological Societies Transactions LI:321-328 [L. Ivany/P. Wall/P. Wall]