USGS loc. M3280, Media Agua Creek (Oligocene of the United States)

Also known as USGS loc. 3772

Where: Kern County, California (35.5° N, 119.8° W: paleocoordinates 34.1° N, 111.6° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Wygal Sandstone Member (Temblor Formation), Late/Upper Oligocene (28.4 - 23.0 Ma)

• STRATIGRAPHIC RELATIONS: From Wygal Sst Mbr which regionally overlies the Cymric Shale and is overlain by the Santos Shale of the lower (type) Temblor Fm (Late Oligocene-Middle Miocene). Collection from base of member, where it unconformably overlies the Eocene Point of Rocks Sandstone. THICKNESS: From horizon 6 ft thickness within member that ranges between 20 andf 40 ft in thickness. AGE: Late Oligocene; lower Zemorian foraminiferal staghe, Blakeley molluscan stage. STRATIGRAPHIC POSITION: Presumably near base of member near contact with Point of Rocks Sandstone.

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified, shelly/skeletal sandstone

• ENVIRONMENT: Warm, shallow-water depositional environment - less than 20 fathoms and possibly much shallower.
• SPECIFIC LITHOLOGY: Fossiliferous sandstone. LITHIFICATION: Lithified based on figured specimens.

Size class: macrofossils

Collected by Howard Sonneman and W. O. Addicott; W. O. Addicott; H. C. Wagner, Saburo Kanno, and W. O. Addicott; W. O. Addicott; in 1967; 1968; 1969; 1971; reposited in the UCMP, USNM

Collection methods: surface (in situ),

• USGS M3280: Howard Sonneman and W. O. Addicott, 1967; H. C. Wagner, Saburo Kanno, and W. O. Addicott, 1969; W. O. Addicott, 1971.

•USGS 3772: Collected by W. O. Addicott, 1968.

Primary reference: W. O. Addicott. 1973. Oligocene molluscan biostratigraphy and paleontology of the Lower Part of the type Temblor Formation, California. United States Geological Survey Professional Paper 791:1-48 [A. Hendy/A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 72406: authorized by Austin Hendy, entered by Austin Hendy on 02.06.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropoda, bivalvia, and scaphopoda. NOMENCLATURE: Authoritative publication with subgeneric and species level assignments, though slightly antiquated nomenclature.
Scaphopoda
 Dentaliida - Dentaliidae
"Dentalium laneensis" = Dentalium (Fissidentalium) laneensis
"Dentalium laneensis" = Dentalium (Fissidentalium) laneensis Hickman 1969 tusk shell
Gastropoda
 Neotaenioglossa - Calyptraeidae
Calyptraea diegoana Conrad 1855 slipper shell
Crepidula cf. ungana Dall 1908 slipper shell
 Neogastropoda - Siphonaliidae
Calicantharus dalli Clark 1918 snail
Bruclarkia seattlensis Durham 1944 snail
 Neogastropoda - Buccinidae
? Siphonalia sp. Adams 1863 true whelk
"? Kelletia sp." = Siphonalia (Kelletia) Fischer 1884 true whelk
 Sorbeoconcha - Naticidae
Natica (Natica) "n. sp." Scopoli 1777 moon snail
Polinices "n. sp." Monfort 1810 moon snail
Bivalvia
 Nuculida - Nuculidae
? Acila (Truncacila) ? muta Clark 1918 divaricate nutclam
 Ostreida - Gryphaeidae
"Crassostrea eldridgei" = Crenostrea eldridgei
"Crassostrea eldridgei" = Crenostrea eldridgei Arnold 1907 oyster
SUBSPECIES: C. eldridgei ynezana
 Pectinida - Pectinoidae
Vertipecten alexclarki Addicott 1973 scallop
Argopecten sp. Monterosato 1889 calico scallop
 Arcida - Arcidae
 Lucinida - Lucinidae
Here excavata Carpenter 1857 clam
Lucinoma acutilineata Conrad 1849 clam
 Cardiida - Mactridae
"Spisula ramonensis" = Mactromeris ramonensis, "Spisula cf. rushi" = Mactromeris rushi, Spisula "n. sp."
"Spisula ramonensis" = Mactromeris ramonensis Packard 1916 clam
"Spisula cf. rushi" = Mactromeris rushi Wagner and Schilling 1923 clam
Spisula "n. sp." Gray 1837 clam
 Cardiida - Veneridae
Securella cf. cryptolineata Clark 1918 venus clam
Clementia (Egesta) pertenuis Gabb 1864 venus clam
Dosinia (Dosinia) whitneyi Gabb 1866 venus clam
Amiantis "n. sp." Carpenter 1863 venus clam
Amiantis mathewsoni Gabb 1866 venus clam
 Cardiida - Ungulinidae
"Felaniella harfordi" = Felaniella (Felaniella) harfordi
"Felaniella harfordi" = Felaniella (Felaniella) harfordi Anderson 1905 clam
 Cardiida - Tellinidae
"Heteromacoma rostellata" = Psammotreta (Leporimetis) rostellata, "Macoma arctata" = Macoma (Psammacoma) arctata
"Heteromacoma rostellata" = Psammotreta (Leporimetis) rostellata Clark 1918 tellin clam
"Macoma arctata" = Macoma (Psammacoma) arctata Conrad 1849 tellin clam
 Hiatellida - Hiatellidae
Panopea ramonensis Clark 1925 clam
 Solenida - Solenidae
"Solen aff. gravidus" = Solena (Plectosolen) gravidus
"Solen aff. gravidus" = Solena (Plectosolen) gravidus Clark 1918 clam