Merced Fm (Pliocene of the United States)

Where: Sonoma County, California (38.4° N, 122.9° W: paleocoordinates 38.3° N, 121.5° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Merced Formation, Pliocene (5.3 - 2.6 Ma)

• STRATIGRAPHIC RELATIONS: From the Merced Fm, for which lithostratigraphic relationships are not discussed. AGE: Pliocene, according to text. STRATIGRAPHIC POSITION: From unknown position within local section.

• bed-level stratigraphic resolution

Environment/lithology: marine; siliciclastic sediments

• SPECIFIC LITHOLOGY: Presumably siliciclastic. LITHIFICATION: Unknown.

Size class: macrofossils

Collection methods: COLLECTOR: Not stated, but possibly Martin. REPOSITORY: Unknown.

Primary reference: U. S. Grant, IV and H. R. Gale. 1931. Catalogue of the Marine Pliocene and Pleistocene Mollusca of California. Memoirs of the San Diego Society of Natural History 1:1-1036 [A. Hendy/A. Hendy/J. Marcot]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 96887: authorized by Austin Hendy, entered by Austin Hendy on 08.07.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for molluscs. NOMENCLATURE: Authoritative publication, but with antiquated nomenclature (revised through other sources), but with species-resolution identifications.
Show authors, comments, and common names
Gastropoda
 Neogastropoda - Columbellidae
"Mitrella carinata" = Alia carinata
"Mitrella carinata" = Alia carinata Hinds 1844 dovesnail
SUBSPECIES: Mitrella carinata gausapata
 Neogastropoda - Nassariidae
"Nassarius (Schizopyga) fossatus" = Caesia fossatus
"Nassarius (Schizopyga) fossatus" = Caesia fossatus Gould 1849 snail
 Neogastropoda - Muricidae
"Thais (Stramonita) imperialis" = Stramonita
"Thais (Stramonita) imperialis" = Stramonita murex snail
Bivalvia
 Arcida - Arcidae
"Arca (Arca) trilineata" = Anadara trilineata
"Arca (Arca) trilineata" = Anadara trilineata Conrad 1856 ark
 Cardiida - Veneridae
"Venerupis (Protothaca) staminea" = Leukoma staminea, "Tivela stultorum" = Tivela (Pachydesma) stultorum
"Venerupis (Protothaca) staminea" = Leukoma staminea Conrad 1837 venus clam
"Tivela stultorum" = Tivela (Pachydesma) stultorum Mawe 1823 venus clam
 Cardiida - Mactridae
"Schizothaerus nuttallii" = Tresus nuttallii, "Mactra (Spisula) polynyma" = Mactromeris polynyma, "Mactra (Spisula) albaria" = Mactromeris albaria
"Schizothaerus nuttallii" = Tresus nuttallii Conrad 1837 clam
"Mactra (Spisula) polynyma" = Mactromeris polynyma Stimpson 1860 clam
SUBSPECIES: Mactra (Spisula) polynyma voyi
"Mactra (Spisula) albaria" = Mactromeris albaria Conrad 1848 clam
 Solenida - Solenidae
Solen sicarius, "Solen rosaceus" = Solen rostriformis
Solen sicarius Gould 1850 clam
"Solen rosaceus" = Solen rostriformis Dunker 1862 clam
 Hiatellida - Hiatellidae
"Panope (Panope) generosa" = Panopea generosa
"Panope (Panope) generosa" = Panopea generosa Gould 1850 clam