UCLA L-2716, Rosarito Beach (Punta Descanso) (Pleistocene of Mexico)

Also known as UCLA Loc. 2716; LACMIP Loc. 22716

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

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Late/Upper Pleistocene (0.1 - 0.0 Ma)

• 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.

• bed-level stratigraphic resolution

Environment/lithology: marine; unlithified, shelly/skeletal, sandy conglomerate

• SPECIFIC LITHOLOGY: Unconsolidated pebble conglomerate with sand matrix. 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 96591: authorized by Austin Hendy, entered by Austin Hendy on 13.06.2010, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for molluscs. NOMENCLATURE: Authoritative publication, with somewhat antiquated nomenclature, but with species resolution.
Polychaeta
  -
Gastropoda
 Sorbeoconcha - Procerithiidae
"Bittium purpureum" = Lirobittium purpureum
"Bittium purpureum" = Lirobittium purpureum Carpenter 1864 snail
 Sorbeoconcha - Cerithiopsidae
Seila montereyensis Bartsch 1907 snail
Cerithiopsis sp. Hanley 1849 snail
 Sorbeoconcha - Triphoridae
"Triphora cf. pedroana" = Monophorus pedroanus
"Triphora cf. pedroana" = Monophorus pedroanus Bartsch 1907 snail
 Sorbeoconcha - Littorinidae
"Littorina scutulata" = Littorina (Littorina) scutulata, "Lacuna unifasciata" = Lacuna (Epheria) unifasciata, "Littorina planaxis" = Littorina (Neritrema) keenae
"Littorina scutulata" = Littorina (Littorina) scutulata Gould 1849 periwinkle
"Lacuna unifasciata" = Lacuna (Epheria) unifasciata Carpenter 1857 periwinkle
"Littorina planaxis" = Littorina (Neritrema) keenae Rosewater 1978 periwinkle
 Sorbeoconcha - Hipponicidae
Hipponix tumens Carpenter 1864 hoof shell
Antisabia panamensis2 Adams 1852 hoof shell
 Sorbeoconcha - Triviidae
"Pusula californiana" = Pseudopusula californiana
"Pusula californiana" = Pseudopusula californiana Gray 1827 snail
 Sorbeoconcha - Cypraeidae
"Zonaria spadicea" = Neobernaya spadicea
"Zonaria spadicea" = Neobernaya spadicea Swainson 1823 cowry
 Sorbeoconcha - Eratoidae
"Erato vitellina" = Hespererato vitellina, "Erato columbella" = Hespererato columbella
"Erato vitellina" = Hespererato vitellina Hinds 1844 snail
"Erato columbella" = Hespererato columbella Menke 1847 snail
 Neogastropoda - Cystiscidae
"Cypraeolina pyriformis" = Granulina margaritula, "Cystiscus subtrigona" = Gibberula subtrigona, "Cystiscus jewetti" = Plesiocystiscus jewetti
"Cypraeolina pyriformis" = Granulina margaritula Carpenter 1857 snail
"Cystiscus subtrigona" = Gibberula subtrigona Carpenter 1864 snail
"Cystiscus jewetti" = Plesiocystiscus jewetti Carpenter 1857 snail
 Neogastropoda - Muricidae
Nucella emarginata murex snail
Maxwellia gemma Sowerby 1879 murex snail
"Acanthina lugubris" = Mexacanthina lugubris Sowerby I 1822 murex snail
"Ocinebra interfossa" = Paciocinebrina interfossa Carpenter 1864 murex snail
Ceratostoma nuttalli Conrad 1837 murex snail
 Neogastropoda - Marginellidae
"Hyalina californica" = Volvarina taeniolata
"Hyalina californica" = Volvarina taeniolata Mörch 1860 margin shell
 Neogastropoda -
"Mitromorpha aspera" = Cymakra aspera
"Mitromorpha aspera" = Cymakra aspera Carpenter 1864 snail
 Neogastropoda - Olividae
"Olivella biplicata" = Callianax biplicata
"Olivella biplicata" = Callianax biplicata Sowerby 1825 olive snail
 Neogastropoda - Conidae
"Conus californicus" = Californiconus californicus
"Conus californicus" = Californiconus californicus Reeve 1844 cone shell
 Neogastropoda - Pseudolividae
Macron lividus Adams 1855 snail
 Neogastropoda - Columbellidae
"Mitrella carinata" = Alia carinata, Amphissa versicolor
"Mitrella carinata" = Alia carinata Hinds 1844 dovesnail
Amphissa versicolor Dall 1871 snail
 Neogastropoda - Nassariidae
"Nassa mendica" = Hima mendica, "Nassa fossata" = Caesia fossatus, "Nassa perpinguis" = Caesia perpinguis
"Nassa mendica" = Hima mendica Gould 1849 snail
"Nassa fossata" = Caesia fossatus Gould 1849 snail
"Nassa perpinguis" = Caesia perpinguis Hinds 1844 snail
 Neogastropoda - Fasciolariidae
 Neogastropoda - Mitridae
"Mitra idae" = Mitra (Atrimitra) idae, "Mitra catalinae" = Mitra (Atrimitra) catalinae
"Mitra idae" = Mitra (Atrimitra) idae Melville 1893 mitre shell
"Mitra catalinae" = Mitra (Atrimitra) catalinae Dall 1919 mitre shell
 Sorbeoconcha - Assimineidae
 Sorbeoconcha - Tornidae
Pseudorotella supravallata Carpenter 1864 snail
 Sorbeoconcha - Vermetidae
"Aletes squamigerus" = Thylacodes squamigerus
"Aletes squamigerus" = Thylacodes squamigerus Carpenter 1857 worm shell
 Neotaenioglossa - Calyptraeidae
Crepipatella lingulata Gould 1846 slipper shell
"Crepidula coei" = Crepidula naticarum Williamson 1905 slipper shell
Crepidula nummaria Gould 1846 slipper shell
 Epitonioidea - Epitoniidae
"Epitonium tinctum" = Hirtoscala tincta, Opalia insculpta, "Opalia chacei" = Opalia borealis
"Epitonium tinctum" = Hirtoscala tincta Carpenter 1864 wentletrap
Opalia insculpta Carpenter 1866 wentletrap
"Opalia chacei" = Opalia borealis Gould 1852 wentletrap
 Vanikoroidea - Eulimidae
"Balcis thersites" = Melanella thersites
"Balcis thersites" = Melanella thersites Carpenter 1864 snail
 Patellida - Lottiidae
Acmaea mitra, "Acmaea insessa" = Lottia insessa, "Acmaea scabra" = Lottia scabra, "Acmaea cf. persona" = Lottia persona, "Acmaea pelta" = Lottia pelta, Lottia gigantea, "Acmaea digitalis" = Lottia digitalis, "Acmaea paleacea" = Lottia paleacea, "Acmaea scutum" = Lottia scutum, "Acmaea asmi" = Lottia asmi
Acmaea mitra Eschscholtz 1833 limpet
"Acmaea insessa" = Lottia insessa Hinds 1842 limpet
"Acmaea scabra" = Lottia scabra Gould 1846 limpet
"Acmaea cf. persona" = Lottia persona Eschesholtz 1833 limpet
"Acmaea pelta" = Lottia pelta Eschscholtz 1833 limpet
Lottia gigantea Sowerby 1834 limpet
"Acmaea digitalis" = Lottia digitalis Eschscholtz 1833 limpet
"Acmaea paleacea" = Lottia paleacea Gould 1853 limpet
"Acmaea scutum" = Lottia scutum Eschscholtz 1833 limpet
"Acmaea asmi" = Lottia asmi Middendorff 1847 limpet
 Heterostropha - Pyramidellidae
Turbonilla sp. Risso 1826 snail
"Turbonilla tenuicula" = Pyrgiscus tenuiculus Gould 1853 snail
"Odostomia phanea" = Odostomia (Evalea) phanea Dall and Bartsch 1907 snail
 Heterostropha - Trimusculidae
Trimusculus reticulata Sowerby 1835 button snail
 Trochoidea - Trochidae
"Tegula funebralis" = Chlorostoma funebrale, "Tegula gallina" = Chlorostoma gallina, "Norrisia norrisi" = Norrisia norrisii
"Tegula funebralis" = Chlorostoma funebrale Adams 1855 top snail
"Tegula gallina" = Chlorostoma gallina Forbes 1850 top snail
"Norrisia norrisi" = Norrisia norrisii Sowerby I 1838 top snail
 Trochoidea - Turbinidae
"Homalopoma carpenteri" = Homalopoma (Homalopoma) luridum
"Homalopoma carpenteri" = Homalopoma (Homalopoma) luridum Dall 1885 snail
 Lepetellida - Fissurellidae
"Megatebennus bimaculata" = Fissurellidea bimaculata Dall 1871 snail
Diodora aspera Rathke 1833 snail
Fissurella volcano Reeve 1849 snail
 Lepetellida - Haliotidae
"Haliotis cracherodi" = Haliotis cracherodii
"Haliotis cracherodi" = Haliotis cracherodii Leach 1814 abalone
Bivalvia
 Carditida - Carditidae
"Glans subquadrata" = Glans carpenteri
"Glans subquadrata" = Glans carpenteri Lamy 1922 clam
 Cardiida - Lasaeidae
"Lasaea subviridis" = Lasaea adansoni1, "Kellia laperousi" = Kellia suborbicularis
"Lasaea subviridis" = Lasaea adansoni1 Gmelin 1791 clam
"Kellia laperousi" = Kellia suborbicularis Montague 1803 clam
 Cardiida - Ungulinidae
Diplodonta orbella Gould 1851 clam
 Cardiida - Veneridae
"Transenella tantilla" = Nutricola tantilla, "Irus lamellifer" = Irusella lamellifera, "Protothaca staminea" = Leukoma staminea, "Chione picta" = Chione (Timoclea) picta
"Transenella tantilla" = Nutricola tantilla Gould 1853 venus clam
"Irus lamellifer" = Irusella lamellifera Conrad 1837 venus clam
"Protothaca staminea" = Leukoma staminea Conrad 1837 venus clam
"Chione picta" = Chione (Timoclea) picta Willett 1944 venus clam
 Cardiida - Chamidae
"Pseudochama exogyra" = Chama exogyra, Chama arcana1
"Pseudochama exogyra" = Chama exogyra Conrad 1837 jewel box
Chama arcana1 Bernard 1976 jewel box
 Cardiida - Semelidae
Cumingia californica Conrad 1837 clam
"Semele rupicola" = Semele (Elegantula) rupicola Dall 1915 clam
 Pholadida - Myidae
Cryptomya californica Conrad 1837 softshell clam
 Pholadida - Corbulidae
"Corbula luteola" = Caryocorbula luteola
"Corbula luteola" = Caryocorbula luteola Carpenter 1864 clam
 Hiatellida - Hiatellidae
Hiatella arctica Linnaeus 1767 clam
 Lucinida - Lucinidae
Epilucina californica Conrad 1837 clam
 Mytilida - Mytilidae
Septifer bifurcatus Conrad 1837 mussel
Mytilus californianus Conrad 1837 mussel
"Modiolus fornicatus" = Modiolus carpenteri Soot-Ryen 1963 mussel
 Pectinida - Anomiidae
"Pododesmus macroschisma" = Pododesmus (Monia) macrochisma
"Pododesmus macroschisma" = Pododesmus (Monia) macrochisma Deshayes 1839 scallop
 Pectinida - Pectinoidae
"Hinnites giganteus" = Crassadoma gigantea
"Hinnites giganteus" = Crassadoma gigantea Gray 1825 scallop
 Arcida - Arcidae
"Barbatia bailyi" = Acar bailyi
"Barbatia bailyi" = Acar bailyi Bartsch 1931 miniature ark
Polyplacophora
 Neoloricata - Ischnochitonidae
"Lepidozona pectinulatus" = Ischnochiton (Lepidozona) pectinulatus
"Lepidozona pectinulatus" = Ischnochiton (Lepidozona) pectinulatus Carpenter 1893 chiton
 Neoloricata - Mopaliidae
Mopalia ciliata Sowerby 1840 chiton
Mopalia muscosa Gould 1846 chiton
 Chitonida - Callistoplacidae
Callistochiton palmulatus Dall 1879 chiton
Callistochiton crassicostatus Pilsbry 1893 chiton
Malacostraca
 Decapoda - Cancridae
"Cancer (Romaleon) branneri" = Romaleon branneri3, "Cancer (Cancer) chaneyi" = Cancer chaneyi3, "Cancer (Cancer) productus" = Cancer productus3
"Cancer (Romaleon) branneri" = Romaleon branneri3 Rathbun 1926 crab
"Cancer (Cancer) chaneyi" = Cancer chaneyi3 Nations 1975 crab
"Cancer (Cancer) productus" = Cancer productus3 Randall 1839 crab