LACMIP Loc. 22719 - Rosarito Beach (Pleistocene of Mexico)

Also known as UCLA Loc. 2719

Where: Baja California, Mexico (32.3° N, 117.0° W: paleocoordinates 32.3° N, 116.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Pleistocene (2.6 - 0.0 Ma)

• STRATIGRAPHIC RELATIONS: From unnamed lithostratigraphic unit, for which stratigraphic relations are not discussed. AGE: PLeistocene. STRATIGRAPHIC POSITION: Unconsolidated pebble conglomerate exposed in sea cliff.

• bed-level stratigraphic resolution

Environment/lithology: marine; unlithified, pebbly conglomerate

• SPECIFIC LITHOLOGY: Unconsolidated pebble conglomerate. LITHIFICATION: Unlithified, on the basis of facies description.

Size class: macrofossils

Preservation: original aragonite, original calcite

Collected by Cunningham & Valentine in 1952; reposited in the LACM

Collection methods: surface (in situ),

• COLLECTORS: Cunningham and Valentine, 1952. REPOSITORY: Apparently, UCLA.

Primary reference: J. W. Valentine. 1957. Late Pleistocene faunas from the northwestern coast of Baja California, Mexico. Transactions of the San Diego Society of Natural History 12(16):298-308 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 96594: authorized by Austin Hendy, entered by Austin Hendy on 13.06.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for molluscs. NOMENCLATURE: Authoritative publication, with somewhat antiquated nomenclature, but with species resolution.
Polyplacophora
 Neoloricata - Acanthochitonidae
Cryptochiton stelleri Middendorf 1847 chiton
 Neoloricata - Mopaliidae
Gastropoda
 Heterostropha - Trimusculidae
Trimusculus reticulata Sowerby 1835 button snail
 Patellida - Lottiidae
"Acmaea insessa" = Lottia insessa, "Acmaea digitalis" = Lottia digitalis, "Acmaea scutum" = Lottia scutum, Acmaea mitra
"Acmaea insessa" = Lottia insessa Hinds 1842 limpet
"Acmaea digitalis" = Lottia digitalis Eschscholtz 1833 limpet
"Acmaea scutum" = Lottia scutum Eschscholtz 1833 limpet
Acmaea mitra Eschscholtz 1833 limpet
 Lepetellida - Haliotidae
Haliotis sp. Linnaeus 1758 abalone
 Lepetellida - Fissurellidae
Diodora aspera, "Megatebennus bimaculata" = Fissurellidea bimaculata
Diodora aspera Rathke 1833 snail
"Megatebennus bimaculata" = Fissurellidea bimaculata Dall 1871 snail
 Trochoidea - Trochidae
Calliostoma ligatum Gould 1849 top snail
"Tegula funebralis" = Chlorostoma funebrale Adams 1855 top snail
 Neotaenioglossa - Calyptraeidae
Crepidula nummaria Gould 1846 slipper shell
 Sorbeoconcha - Vermetidae
"Aletes squamigerus" = Thylacodes squamigerus
"Aletes squamigerus" = Thylacodes squamigerus Carpenter 1857 worm shell
 Sorbeoconcha - Naticidae
Euspira lewisii Gould 1847 moon snail
 Sorbeoconcha - Littorinidae
"Littorina scutulata" = Littorina (Littorina) scutulata, "Littorina planaxis" = Littorina (Neritrema) keenae
"Littorina scutulata" = Littorina (Littorina) scutulata Gould 1849 periwinkle
"Littorina planaxis" = Littorina (Neritrema) keenae Rosewater 1978 periwinkle
 Sorbeoconcha - Bursidae
"Bursa californica" = Crossata ventricosa
"Bursa californica" = Crossata ventricosa Broderip 1833 frog shell
 Neogastropoda - Columbellidae
"Mitrella carinata" = Alia carinata
"Mitrella carinata" = Alia carinata Hinds 1844 dovesnail
 Neogastropoda - Nassariidae
"Nassa fossata" = Caesia fossatus, "Nassa perpinguis" = Caesia perpinguis
"Nassa fossata" = Caesia fossatus Gould 1849 snail
"Nassa perpinguis" = Caesia perpinguis Hinds 1844 snail
 Neogastropoda - Olividae
"Olivella biplicata" = Callianax biplicata
"Olivella biplicata" = Callianax biplicata Sowerby 1825 olive snail
 Neogastropoda - Muricidae
Nucella emarginata murex snail
"Acanthina spirata" = Acanthinucella spirata Blainville 1832 murex snail
 Neogastropoda - Turridae
Megasurcula carpenteriana Gabb 1866 turrid
 Sorbeoconcha - Hipponicidae
Antisabia panamensis1 Adams 1852 hoof shell
Bivalvia
 Pectinida - Anomiidae
"Pododesmus macroschisma" = Pododesmus (Monia) macrochisma
"Pododesmus macroschisma" = Pododesmus (Monia) macrochisma Deshayes 1839 scallop
 Ostreida - Ostreidae
"Ostrea megodon" = Undulostrea megodon
"Ostrea megodon" = Undulostrea megodon Hanley 1846 oyster
 Arcida - Glycymerididae
"Glycymeris aff. profunda" = Glycymeris septentrionalis, "Glycymeris subobsoleta" = Glycymeris septentrionalis
"Glycymeris aff. profunda" = Glycymeris septentrionalis Middendorf 1849 clam
"Glycymeris subobsoleta" = Glycymeris septentrionalis Middendorf 1849 clam
 Mytilida - Mytilidae
Septifer bifurcatus Conrad 1837 mussel
Mytilus californianus Conrad 1837 mussel
 Solenida - Pharidae
Siliqua patula Dixon 1789 clam
 Cardiida - Veneridae
"Protothaca staminea" = Leukoma staminea, Chione undatella, "Tivela stultorum" = Tivela (Pachydesma) stultorum, "Petricola carditoides" = Petricola (Petricola) carditoides
"Protothaca staminea" = Leukoma staminea Conrad 1837 venus clam
Chione undatella Sowerby I 1835 venus clam
"Tivela stultorum" = Tivela (Pachydesma) stultorum Mawe 1823 venus clam
"Petricola carditoides" = Petricola (Petricola) carditoides Conrad 1837 venus clam
 Cardiida - Mactridae
"Schizothaerus nuttalli" = Tresus nuttallii
"Schizothaerus nuttalli" = Tresus nuttallii Conrad 1837 clam
 Cardiida - Cardiidae
"Trachycardium cf. quadragenarium" = Dallocardia quadragenarium
"Trachycardium cf. quadragenarium" = Dallocardia quadragenarium Conrad 1837 cockle
 Cardiida - Donacidae
"Donax gouldi" = Donax (Donax) gouldii
"Donax gouldi" = Donax (Donax) gouldii Dall 1921 clam
 Pholadida - Pholadidae
"Pholadidea penita" = Penitella penita
"Pholadidea penita" = Penitella penita Conrad 1837 clam
 Lucinida - Lucinidae
Here excavata Carpenter 1857 clam
Lucinisca nuttalli Conrad 1837 clam
Thecostraca
 Balanomorpha - Balanidae
Tamiosoma regalis2 Pilsbry 1916 barnacle