Little Brazos River (H76-69-2): Lutetian, Texas

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Anthozoa
Anthozoa indet. Ehrenberg 1834
3 specimens
"Coral sp."
Gastropoda
Gastropoda indet. Cuvier 1795
14 specimens
misc. gastropods, 14 species, 1 specimen each.
Gastropoda - Neogastropoda - Buccinidae
Buccitriton texanum
202 specimens
Gastropoda - Neogastropoda - Terebridae
Terebridae indet. Mörch 1852
1 specimen
Terebrid
Gastropoda - Neogastropoda - Turridae
Eucheilodon reticulatus
19 specimens
    = Eucheilodon reticulata
Palmer and Brann 1965
Gastropoda - Neogastropoda - Costellariidae
Conomitra texana
6 specimens
Gastropoda - Neogastropoda - Volutidae
Athleta ? petrosus (Conrad 1833)
1 specimen
recombined as Athleta petrosa
originally entered as "Athleta ? petrosus"
Gastropoda - Ranellidae
Distorsio septemdentata ()
1 specimen
original and current combination Distorsio septendentata
Gastropoda - Naticidae
Naticidae indet. Guilding 1834
1 specimen
"Naticid sp."
Polinices aratus
85 specimens
Gastropoda - Opisthobranchia - Retusidae
Rhizorus loisae
3 specimens
Bivalvia - Pholadida - Corbulidae
Caryocorbula ? deusseni
2 specimens
originally entered as "Caryocorbula ? deusseni"
Bivalvia - Cardiida - Cardiidae
Cardiidae indet. Lamarck 1809
1 specimen
Cardiid
Bivalvia - Nuculida - Nuculidae
Nucula sp. Lamarck 1799
5 specimens
Bivalvia - Nuculanida - Nuculanidae
Nuculana trivitate
7 specimens
Orthoyoldia psammotaea (Dall 1898)
5 specimens
Scaphopoda - Gadilida - Gadilidae
Cadulus sp. Philippi 1844
12 specimens
see common names

Geography
Country:United States State/province:Texas County:Burleson
Coordinates: 30.5° North, 96.7° West (view map)
Paleocoordinates:32.6° North, 85.7° West
Basis of coordinate:based on political unit
Geographic resolution:small collection
Time
Period:Paleogene Epoch:Eocene
Stage:Lutetian 10 m.y. bin:Cenozoic 2
*Period:Tertiary
Key time interval:Lutetian
Age range of interval:47.80000 - 41.30000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Cook Mountain Member:Wheelock Marl
Local section:H76-69 Local bed:2
Stratigraphic resolution:bed
Lithology and environment
Primary lithology:gray,red or brown unlithified "shale"
Environment:offshore Tectonic setting:passive margin
Geology comments: "Gray-brown block clay with sand partings. Well preserved shell concentrated in partings."
Taphonomy
Modes of preservation:body
Collection methods and comments
Collection methods:bulk,mechanical,sieve,field collection
Reason for describing collection:paleoecologic analysis
Metadata
Also known as:H76-69-2
Database number:1450
Authorizer:T. Hansen, J. Sessa Enterer:M. Sommers, J. Sessa
Modifier:J. Alroy Research group:marine invertebrate
Created:1999-04-20 10:29:20 Last modified:2006-09-14 19:54:24
Access level:the public Released:2000-11-20 13:53:12
Creative Commons license:CC BY
Reference information

Primary reference:

42. T. A. Hansen. 1978. Ecological control of evolutionary rates in Paleocene - Eocene marine molluscs. Ph.D. Thesis, Yale University 1-310 [T. Hansen/M. Sommers/A. Clement]

Secondary references:

11845 K. V. Palmer and D. C. Brann. 1965. Catalogue of the Paleocene and Eocene mollusca of the southern and eastern United States. Part 1. Pelecypoda, Amphineura, Peteropoda, Scaphopoda and Cephalopoda. Bulletins of American Paleontology 48:1-471 [M. Kosnik/M. Kosnik/J. Alroy]