UW 260A - Benicia: Thanetian, California

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Scaphopoda - Dentaliida - Dentaliidae
Dentalium stramineum Gabb 1864
Dentalium cooperi (Gabb 1864)
Gastropoda - Heterostropha - Architectonicidae
Architectonica tuberculata Weaver 1905
Gastropoda - Heterostropha - Acteonidae
Actaeon lawsoni Weaver 1905
Gastropoda - Ficidae
Priscofusus robustus (Weaver 1905)
recombined as Priscoficus robustus
Gastropoda - Ranellidae
Neptunea pulchra (Weaver 1905)
original and current combination Tritonium pulchrum
Gastropoda - Xenophoridae
Xenophora zitteli Weaver 1905
Gastropoda - Aporrhaidae
? Tessarolax inconspicua (Gabb 1869)
Gastropoda - Neogastropoda - Tudiclidae
Heteroterma trochoidea Gabb 1869
Gastropoda - Neogastropoda - Muricidae
Perissolax tricarinatus (Weaver 1905)
recombined as Pseudoperissolax tricarnatus
Gastropoda - Neogastropoda - Buccinidae
Siphonalia lineata Stanton 1896
Brachysphingus gabbi Stewart 1927
synonym of Brachysphingus sinuatus
Gastropoda - Neogastropoda - Turridae
Surculites mathewsonii (Gabb 1864)
misspelled as "Surculites mathewsoni"
Gastropoda - Naticidae
Polinices hornii (Gabb 1864)
Gastropoda - Discohelicidae
Discohelix californicus Weaver 1905
Gastropoda - Opisthobranchia - Cylichnidae
Scaphander costatus (Gabb 1864)
recombined as Scaphander (Mirascapha) costatus
Bivalvia - Nuculanida - Nuculanidae
Saccella alaeformis (Gabb 1869)
misspelled as "Sacella alaeformis"
Saccella gabbii (Conrad 1866)
misspelling Nuculana gabbii
misspelled as "Sacella gabbi"
Bivalvia - Nuculida - Nuculidae
Acila (Truncacila) decisa (Conrad 1855)
Bivalvia - Mytilida - Mytilidae
Brachidontes ornatus (Gabb 1864)
synonym of Brachidontes (Brachidontes) cowlitzensis
Bivalvia - Ostreida - Ostreidae
Ostrea weaveri Dickerson 1914
Bivalvia - Pectinida - Limidae
Lima multiradiata Gabb 1869
recombined as Acesta (Acesta) multiradiata
Bivalvia - Arcida - Cucullaeidae
Cucullaea mathewsoni (Gabb 1864)
original and current combination Cucullaea mathewsonii
Bivalvia - Arcida - Glycymerididae
Glycymeris veatchii (Gabb 1864)
Subspecies: Glycymeris veatchii major
    = Glycymerita major Stanton 1896
Hendy 2020
Bivalvia - Lucinida - Lucinidae
? Codalucina turneri (Stanton 1896)
Bivalvia - Pholadomyida - Pholadomyidae
Pholadomya nasuta Gabb 1864
Bivalvia - Cardiida - Veneridae
"Meretrix" stantoni Dickerson 1914
Pitar quadratus (Gabb 1864)
Bivalvia - Cardiida - Tellinidae
Tellina martinezensis Weaver 1905
recombined as Tellina (Eurytellina) martinezensis
"Tellina" undulifera Gabb 1869
recombined as Tellina (Saulella) undulifera
Bivalvia - Cardiida - Psammobiidae
Gari hornii (Gabb 1864)
recombined as Gari (Gobraeus) hornii
Bivalvia - Solenida - Solenidae
Solena stantoni (Weaver 1905)
recombined as Solena (Eosolen) stantoni
Echinoidea - Spatangoida - Schizasteridae
Schizaster lecontei Merriam 1899
Anthozoa - Scleractinia - Guyniidae
Trochocyathus zitteli Vaughan 1900
recombined as Palaeopsammia zitteli
unclassified
Bullinula subglobosa Weaver 1905
see common names

Geography
Country:United States State/province:California County:Solano
Coordinates: 38.1° North, 122.2° West (view map)
Paleocoordinates:43.2° North, 101.2° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Paleogene Epoch:Paleocene
Stage:Thanetian 10 m.y. bin:Cenozoic 1
Key time interval:Thanetian
Age range of interval:59.20000 - 56.00000 m.y. ago
Stratigraphy
Formation:Martinez
Stratigraphic resolution:bed
Stratigraphy comments: Most of the fossiliferous faunas in the sections near Martinez occur in the lower 800 ft thick sandstone unit. Mollusca suggest a "Martinez" stage age. Martinez local stage = Thanetian. The Martinez Formation rests with a slight unconformity on the Chico Formation and grades in Eocene shales. The formation is approximately 3100 ft thick with a 1500 ft lower sandstone unit and 1600 ft upper sandy shale, which is dated as Early Eocene.
Lithology and environment
Primary lithology:medium,coarse,glauconitic poorly lithified sandstone
Includes fossils?Y
Lithology description: Massive, medium- and coarse-grained sandstones, in part glauconitic.
Environment:offshore
Geology comments: No environmental information reported, but fauna appears to be offshore shelf.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:selective quarrying,field collection
Reason for describing collection:general faunal/floral analysis
Collection method comments: Collected and identified by C.E. Weaver. Collections reposited in University of Washington collections.
Taxonomic list comments:Exhaustive for Mollusca, Foraminifera, and Coelenterata. Nomenclature is somewhat antiquated, but with a high proportion of species designations.
Metadata
Database number:52612
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:M. Clapham Research group:marine invertebrate
Created:2005-08-11 22:34:56 Last modified:2017-04-23 09:33:56
Access level:the public Released:2005-08-11 22:34:56
Creative Commons license:CC BY
Reference information

Primary reference:
14145. C. E. Weaver. 1949. Geology of the coast ranges immediately north of the San Francisco Bay region, California. Geological Society of America Memoir 35 [A. Miller/A. Hendy/A. Hendy]

Secondary references:

63217 A. J. W. Hendy. 2020. Unpublished taxonomic backbone for Eastern Pacific Invertebrate Communities of the Cenozoic (EPICC) Thematic Collections Network. [A. Hendy/A. Hendy/A. Hendy]