UCLA L-2716, Rosarito Beach (Punta Descanso): Late/Upper Pleistocene, Mexico
collected by Cunningham & Valentine 1952

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Polyplacophora - Neoloricata - Mopaliidae
Mopalia muscosa (Gould 1846)
R category
Mopalia ciliata (Sowerby 1840)
R category
Polyplacophora - Neoloricata - Ischnochitonidae
Lepidozona pectinulatus (Carpenter 1893)
R category
original and current combination Ischnochiton (Lepidozona) pectinulatus
Polyplacophora - Chitonida - Callistoplacidae
Callistochiton palmulatus Dall 1879
R category
Callistochiton crassicostatus Pilsbry 1893
R category
Gastropoda - Patellida - Lottiidae
Acmaea mitra Eschscholtz 1833
R category
Acmaea pelta Eschscholtz 1833
U category
recombined as Lottia pelta
Acmaea paleacea Gould 1853
R category
recombined as Lottia paleacea
Acmaea asmi (Middendorff 1847)
U category
recombined as Lottia asmi
Acmaea digitalis Eschscholtz 1833
U category
recombined as Lottia digitalis
Acmaea insessa (Hinds 1842)
U category
recombined as Lottia insessa
Lottia gigantea Sowerby 1834
R category
Acmaea scabra (Gould 1846)
U category
original and current combination Patella (Lottia) scabra
Acmaea cf. persona Eschesholtz 1833
R category
recombined as Lottia persona
Acmaea scutum Eschscholtz 1833
U category
recombined as Lottia scutum
Gastropoda - Turbinidae
Homalopoma carpenteri (Pilsbry 1889)
U category
synonym of Homalopoma (Homalopoma) luridum
Gastropoda - Trochidae
Tegula funebralis (Adams 1855)
U category
original and current combination Chlorostoma funebrale
Tegula gallina (Forbes 1850)
R category
recombined as Chlorostoma gallina
Norrisia norrisi (Sowerby I 1838)
R category
recombined as Norrisia norrisii
Gastropoda - Lepetellida - Fissurellidae
Diodora aspera (Rathke 1833)
R category
Fissurella volcano Reeve 1849
U category
Megatebennus bimaculata (Dall 1871)
R category
recombined as Fissurellidea bimaculata
Gastropoda - Lepetellida - Haliotidae
Haliotis cracherodi (Leach 1814)
R category
original and current combination Haliotis cracherodii
Gastropoda - Eulimidae
Balcis thersites (Carpenter 1864)
R category
recombined as Melanella thersites
Gastropoda - Neotaenioglossa - Calyptraeidae
Crepidula coei Berry 1950
R category
synonym of Crepidula naticarum
Crepidula nummaria Gould 1846
R category
Crepipatella lingulata (Gould 1846)
U category
Gastropoda - Epitoniidae
Epitonium tinctum (Carpenter 1864)
R category
recombined as Hirtoscala tincta
Opalia chacei Strong 1937
R category
synonym of Opalia borealis
Opalia insculpta Carpenter 1866
R category
Gastropoda - Cerithiopsidae
Seila montereyensis Bartsch 1907
R category
Cerithiopsis sp. Hanley 1849
R category
Gastropoda - Triphoridae
Triphora cf. pedroana (Bartsch 1907)
R category
recombined as Monophorus pedroanus
Gastropoda - Vermetidae
Aletes squamigerus Carpenter 1857
U category
recombined as Thylacodes squamigerus
Gastropoda - Hipponicidae
Hipponix tumens (Carpenter 1864)
R category
Hipponix antiquatus (Linnaeus 1767)
U category
    = Antisabia panamensis Adams 1852
Hendy 2020
Gastropoda - Neogastropoda - Olividae
Olivella biplicata (Sowerby 1825)
U category
recombined as Callianax biplicata
Gastropoda - Neogastropoda - Muricidae
Stramonita biserealis
R category
Acanthina paucilirata
U category
Ceratostoma nuttalli (Conrad 1837)
R category
Nucella emarginata
R category
Ocinebra interfossa Carpenter 1864
U category
recombined as Paciocinebrina interfossa
Maxwellia gemma (Sowerby 1879)
R category
Acanthina lugubris (Sowerby I 1822)
U category
recombined as Mexacanthina lugubris
Gastropoda - Neogastropoda - Marginellidae
Hyalina californica (Tomlin 1916)
R category
synonym of Volvarina taeniolata
Gastropoda - Neogastropoda - Cystiscidae
Cypraeolina pyriformis (Carpenter 1864)
R category
synonym of Granulina margaritula
Cystiscus subtrigona (Carpenter 1864)
R category
recombined as Gibberula subtrigona
Cystiscus jewetti (Carpenter 1857)
R category
recombined as Plesiocystiscus jewetti
Gastropoda - Neogastropoda
Mitromorpha aspera (Carpenter 1864)
R category
recombined as Cymakra aspera
Gastropoda - Neogastropoda - Mitridae
Mitra catalinae (Dall 1919)
R category
recombined as Mitra (Atrimitra) catalinae
Mitra idae Melville 1893
R category
recombined as Mitra (Atrimitra) idae
Gastropoda - Neogastropoda - Pseudolividae
Macron lividus (Adams 1855)
R category
Gastropoda - Neogastropoda - Nassariidae
Nassa perpinguis Hinds 1844
R category
recombined as Caesia perpinguis
Nassa fossata (Gould 1849)
R category
recombined as Caesia fossatus
Nassa mendica Gould 1849
R category
recombined as Hima mendica
Gastropoda - Neogastropoda - Fasciolariidae
Fusinus luteopictus
R category
Gastropoda - Neogastropoda - Columbellidae
Amphissa versicolor Dall 1871
R category
Mitrella carinata (Hinds 1844)
U category
recombined as Alia carinata
Gastropoda - Neogastropoda - Conidae
Conus californicus Reeve 1844
C category
recombined as Californiconus californicus
Gastropoda - Triviidae
Pusula californiana (Gray 1827)
R category
recombined as Pseudopusula californiana
Gastropoda - Cypraeidae
Zonaria spadicea (Swainson 1823)
R category
recombined as Neobernaya spadicea
Gastropoda - Eratoidae
Erato vitellina Hinds 1844
R category
recombined as Hespererato vitellina
Erato columbella Menke 1847
R category
misspelling Hespererato columbella
Gastropoda - Tornidae
Pseudorotella supravallata (Carpenter 1864)
R category
Gastropoda - Assimineidae
Assiminea transluscens
R category
Gastropoda - Littorinidae
Lacuna unifasciata Carpenter 1857
R category
recombined as Lacuna (Epheria) unifasciata
Littorina scutulata Gould 1849
A category
recombined as Littorina (Littorina) scutulata
Littorina planaxis Philippi 1847
C category
replaced by Littorina (Neritrema) keenae
Gastropoda - Procerithiidae
Bittium purpureum Carpenter 1864
R category
recombined as Lirobittium purpureum
Gastropoda - Heterostropha - Pyramidellidae
Odostomia cf. donilla
R category
Turbonilla sp. Risso 1826
R category
Turbonilla tenuicula (Gould 1853)
R category
recombined as Pyrgiscus tenuiculus
Odostomia phanea (Dall and Bartsch 1907)
R category
original and current combination Odostomia (Evalea) phanea
Gastropoda - Heterostropha - Trimusculidae
Trimusculus reticulata (Sowerby 1835)
U category
Bivalvia - Carditida - Carditidae
Glans subquadrata (Carpenter 1864)
U category
synonym of Glans carpenteri
Bivalvia - Lucinida - Lucinidae
Epilucina californica (Conrad 1837)
R category
original and current combination Phacoides californicus
Bivalvia - Hiatellida - Hiatellidae
Hiatella arctica (Linnaeus 1767)
R category
Bivalvia - Pholadida - Corbulidae
Corbula luteola Carpenter 1864
R category
recombined as Caryocorbula luteola
Bivalvia - Pholadida - Myidae
Cryptomya californica (Conrad 1837)
R category
Bivalvia - Cardiida - Veneridae
Irus lamellifer (Conrad 1837)
R category
recombined as Irusella lamellifera
Chione picta Willett 1944
R category
recombined as Chione (Timoclea) picta
Protothaca staminea (Conrad 1837)
U category
recombined as Leukoma staminea
Transenella tantilla (Gould 1853)
R category
recombined as Nutricola tantilla
Bivalvia - Cardiida - Chamidae
Chama pellucida Broderip 1835
R category
    = Chama arcana Bernard 1976
Coan et al. 2000
Pseudochama exogyra (Conrad 1837)
R category
original and current combination Chama exogyra
Bivalvia - Cardiida - Ungulinidae
Diplodonta orbella (Gould 1851)
R category
Bivalvia - Cardiida - Semelidae
Cumingia californica Conrad 1837
R category
Semele rupicola Dall 1915
R category
recombined as Semele (Elegantula) rupicola
Bivalvia - Cardiida - Lasaeidae
Lasaea subviridus (Dall 1899)
R category
    = Lasaea subviridis Dall 1899
Coan et al. 2000
synonym of Lasaea adansoni
Kellia laperousi (Deshayes 1839)
R category
original and current combination Chironia laperousii
Bivalvia - Mytilida - Mytilidae
Modiolus fornicatus (Carpenter 1864)
U category
replaced by Modiolus carpenteri
Septifer bifurcatus (Conrad 1837)
U category
Mytilus californianus Conrad 1837
U category
Bivalvia - Arcida - Arcidae
Barbatia bailyi (Bartsch 1931)
R category
recombined as Barbatia (Acar) bailyi
Bivalvia - Pectinida - Anomiidae
Pododesmus macroschisma (Deshayes 1839)
R category
recombined as Pododesmus (Monia) macrochisma
Bivalvia - Pectinida - Pectinidae
Hinnites giganteus (Gray 1825)
R category
recombined as Crassadoma gigantea
Polychaeta
Spiroglyphus lituella
R category
Malacostraca - Decapoda - Cancridae
Cancer (Cancer) productus (Randall 1839)
Nations 1975
original and current combination Cancer productus
Cancer (Cancer) chaneyi Nations 1975
Nations 1975
recombined as Cancer chaneyi
Cancer (Romaleon) branneri (Rathbun 1926)
Nations 1975
recombined as Romaleon branneri
see common names

Geography
Country:Mexico State/province:Baja California
Coordinates: 32.3° North, 117.0° West (view map)
Paleocoordinates:32.3° North, 117.0° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Quaternary Epoch:Pleistocene
Stage:Late/Upper Pleistocene 10 m.y. bin:Cenozoic 6
Key time interval:Late/Upper Pleistocene
Age range of interval:0.12900 - 0.01170 m.y. ago
Stratigraphy
Stratigraphic resolution:bed
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From unnamed lithostratigraphic unit, for which stratigraphic relations are not discussed. AGE: Pleistocene (terrace deposits, so presumably Late Pleistocene). STRATIGRAPHIC POSITION: Unconsolidated rubble with matrix of alluvium and broken shell, 3 feet thick, directly overlying pebbly sand at UCAL Loc. 2715.
Lithology and environment
Primary lithology:shelly/skeletal unlithified sandy conglomerate
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Unconsolidated pebble conglomerate with sand matrix. LITHIFICATION: Unlithified, on the basis of facies description.
Environment:marine indet.
Taphonomy
Modes of preservation:body,original aragonite,original calcite
Size of fossils:macrofossils
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:taxonomic analysis
Museum repositories:LACM
Collectors:Cunningham & Valentine Collection dates:1952
Collection method comments: COLLECTORS: Cunningham and Valentine, 1952. REPOSITORY: Apparently, UCLA.
Taxonomic list comments:COVERAGE: Exhaustive for molluscs. NOMENCLATURE: Authoritative publication, with somewhat antiquated nomenclature, but with species resolution.
Metadata
Also known as:UCLA Loc. 2716; LACMIP Loc. 22716
Database number:96591
Authorizer:A. Hendy, M. Clapham Enterer:A. Hendy, M. Clapham
Modifier:M. Clapham Research group:marine invertebrate
Created:2010-06-13 17:16:47 Last modified:2022-07-16 15:51:29
Access level:the public Released:2010-06-13 17:16:47
Creative Commons license:CC BY
Reference information

Primary reference:
32785. 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]

Secondary references:

18663 E. V. Coan, P. V. Scott, and F. R. Bernard. 2000. Bivalve seashells of western North America. Santa Barbara Museum of Natural history Monographs 2:1-764 [A. Miller/A. Hendy/M. Uhen]
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]
52667decapod J. D. Nations. 1975. The genus Cancer (Crustacea: Brachyura): systematics, biogeography and fossil record. Natural History Museum of Los Angeles County Science Bulletin 23:1-104 [C. Schweitzer/C. Schweitzer]