Avenal wells in Big Tar Canyon [Avenal Sandstone]: Ypresian, California

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Turritellidae
Turritella buwaldana Dickerson 1916
Turritella uvasana Conrad 1855
Gastropoda - Ampullinidae
Amaurellina clarki (Stewart 1927)
recombined as Pachycrommium clarki
Globularia (Eocernina) sp. Swainson 1840
Gastropoda - Neotaenioglossa - Calyptraeidae
Calyptraea sp. Lamarck 1799
Gastropoda - Ficidae
Ficopsis crescentensis (Weaver and Palmer 1922)
invalid subgroup of Ficus remondii
Gastropoda - Ranellidae
Personella sp. (Conrad 1865)
reassigned as Sassia (Personella)
Gastropoda - Bursidae
Ranellina sp. Conrad 1865
Olequahia sp. Stewart 1927
Gastropoda - Strombidae
Ectinochilus sp. Cossmann 1889
synonym of Rimella
Terebellum sp. Röding 1798
Gastropoda - Neogastropoda - Volutidae
Lyria sp. Gray 1847
Gastropoda - Neogastropoda - Mitridae
Mitra (cf. Mitra) cretacea Gabb 1864
Gastropoda - Neogastropoda - Olivellidae
Agaronia sp. (Gray 1839)
Gastropoda - Neogastropoda - Buccinulidae
Umpquaia sp. Turner 1938
Gastropoda - Neogastropoda - Nassariidae
Molopophorus sp. (Gabb 1869)
Gastropoda - Neogastropoda - Buccinidae
Pseudoliva sp. Swainson 1840
Gastropoda - Neogastropoda - Fasciolariidae
Falsifusus ? sp.
Gastropoda - Neogastropoda - Turridae
Pleurofusia sp. (de Gregorio 1890)
Gastropoda - Neogastropoda - Terebridae
Terebra sp. Bruguière 1789
Gastropoda - Neogastropoda - Conidae
Conus sp. Linnaeus 1758
Moniliopsis sp. Conrad 1865
Gastropoda - Neogastropoda - Cancellariidae
Bonellitia sp. Jousseaume 1887
Gastropoda - Naticidae
Sinum sp. Röding 1798
Neverita sp. Risso 1826
Euspira sp. Agassiz 1837
Gastropoda - Opisthobranchia - Akeridae
Akera sp. Muller 1776
Gastropoda - Opisthobranchia - Retusidae
Cylichnina sp. Monterasato 1884
spelled with current rank as Retusa (Cylichnina)
Gastropoda - Opisthobranchia - Cylichnidae
Scaphander sp. Monfort 1810
Bivalvia - Nuculida - Nuculidae
Acila sp. Adams and Adams 1858
Bivalvia - Mytilida - Mytilidae
Brachidontes sp. Swainson 1840
Bivalvia - Arcida - Glycymerididae
Glycymeris sagittata (Gabb 1864)
recombined as Glycymerita sagittata
Glycymeris perrini (Dickerson 1916)
recombined as Glycymeris (Tucetona) perrini
Bivalvia - Lucinida - Lucinidae
Lucina sp. Bruguière 1797
Bivalvia - Cardiida - Mactridae
Spisula sp. Gray 1837
Bivalvia - Cardiida - Veneridae
Pitar ? joaquinensis Vokes 1939
Pitar uvasanus (Conrad 1855)
recombined as Pitar uvasana
Bivalvia - Cardiida - Cardiidae
Nemocardium sp. Meek 1876
Plagiocardium (Schedocardia) sp. Stewart 1930
reassigned as Acanthocardia (Schedocardia)
Bivalvia - Cardiida - Psammobiidae
Gari sp. Schumacher 1817
Bivalvia - Carditida - Crassatellidae
Crassatella sp. Lamarck 1799
Bivalvia - Carditida - Carditidae
Venericardia sandiegoensis (Hanna 1927)
recombined as Glyptoactis (Claibornicardia) sandiegoensis
Polychaeta
Spiroglyphus ? sp. Daudin 1800
Anthozoa - Scleractinia - Fungiidae
Discotrochus californicus n. sp. Wells 1940
Wells 1940
Anthozoa - Scleractinia - Calamophylliidae
? Antilloseris vaughani n. sp. Wells 1940
Wells 1940
see common names

Geography
Country:United States State/province:California
Coordinates: 35.9° North, 120.1° West (view map)
Paleocoordinates:38.5° North, 103.0° West
Basis of coordinate:estimated from map
Geographic resolution:local area
Time
Period:Paleogene Epoch:Eocene
Stage:Ypresian 10 m.y. bin:Cenozoic 2
Key time interval:Ypresian
Age range of interval:56.00000 - 47.80000 m.y. ago
Stratigraphy
Formation:Avenal
Stratigraphic resolution:formation
Stratigraphy comments: AGE: modified to Ypresian and "Avenal Sandstone" following EPICC stratigraphy revision [Hendy, 6/2020].
Lithology and environment
Primary lithology: sandstone
Lithology description: Silt, sand and conglomerate
Environment:reef, buildup or bioherm
Geology comments: light-gray sandstone, 300 to 400 feet thick
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils,microfossils
Collection methods and comments
Reason for describing collection:paleoecologic analysis
Metadata
Also known as:USGS 14482
Database number:167604
Authorizer:W. Kiessling, M. Uhen Enterer:M. Krause, M. Uhen
Modifier:J. Marcot Research group:marine invertebrate
Created:2015-03-25 08:05:15 Last modified:2021-05-24 14:26:29
Access level:authorizer only Released:2015-06-25 08:05:15
Creative Commons license:CC BY
Reference information

Primary reference:
54721. R. B. Stewart. 1946. Geology of Reef Ridge Coalinga district California. United States Geological Survey Professional Paper 205C:81-115 [W. Kiessling/M. Krause/J. Marcot]

Secondary references:

71157 J. W. Wells. 1940. Two new corals from the Avenal formation (Eocene) of California. Journal of the Washington Academy of Sciences 30(9):374-376 [M. Uhen/M. Uhen]