Rosefield Marl Beds, Louisiana: Late Oligocene, Louisiana

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