B-1395, Punta La Cholla (Pleistocene of Mexico)

Where: Sonora, Mexico (31.3° N, 113.6° W: paleocoordinates 31.3° N, 113.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• STRATIGRAPHIC RELATIONS: From an unknown lithostratigraphic unit, which unconformably overlies granitic rocks. AGE: Late Pleistocene, on the basis of molluscan biostratigraphy. STRATIGRAPHIC POSITION: Poorly-cemented fossiliferous sandstone, 4 to 10 feet in thickness and overlain by 2 to 10 feet of conglomerate, outcropping in terrace face.

• bed-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified, shelly/skeletal sandstone

• SPECIFIC LITHOLOGY: Poorly-cemented fossiliferous sandstone. LITHIFICATION: Poorly lithified, on the basis of facies description.

Size class: macrofossils

Collected by Emerson & Loring in 1954

• COLLECTOR: W. K. Emerson and A. P. Loring, 1954. REPOSITORY: Unknown, possible SDNHM.

Primary reference: L. G. Hertlein. 1956. Marine Pleistocene Invertebrates from near Puerto Penasco, Sonora, Mexico. Transactions of the San Diego Society of Natural History 12(8):154-176 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 96557: authorized by Austin Hendy, entered by Austin Hendy on 12.06.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Not an authoritative publication, with somewhat antiquated nomenclature, but with species-resolution identifications
Echinoidea
 Clypeasteroida - Mellitidae
Encope sp. Agassiz 1840 sand dollar
Actinopteri
 Teleostei -
Teleostei indet. Müller 1846
Gastropoda
 Trochoidea - Tegulidae
 Trochoidea - Turbinidae
"Turbo fluctuosus" = Turbo (Callopoma) fluctuosus
"Turbo fluctuosus" = Turbo (Callopoma) fluctuosus Wood 1828 snail
 Neritoidea - Neritidae
 Sorbeoconcha - Naticidae
"Polinices reclusianus" = Glossaulax reclusiana
"Polinices reclusianus" = Glossaulax reclusiana Deshayes 1839 moon snail
 Neogastropoda - Olividae
Oliva incrassata Lightfoot 1786 olive snail
Oliva spicata Durham 1950 olive snail
Olivella cf. dama Mawe 1828 olive snail
 Neogastropoda - Nassariidae
 Neogastropoda - Buccinidae
 Neogastropoda - Muricidae
Acanthina muricata unicorn
SUBSPECIES: Acanthina muricata tuberculata
Muricanthus nigritus2 Philippi 1845 murex snail
SUBSPECIES: Murex radix nigritus
 Neogastropoda - Conidae
Conus cf. regularis Sowerby 1841 cone shell
 Sorbeoconcha - Strombidae
Strombus galeatus Swainson 1823 conch
 Sorbeoconcha - Cypraeidae
"Cypraea cf. annettae" = Pseudozonaria annettae
"Cypraea cf. annettae" = Pseudozonaria annettae Dall 1909 cowry
 Sorbeoconcha - Vermetidae
"Aletes sp." = Serpulorbis
"Aletes sp." = Serpulorbis Sasso 1827 worm shell
 Neotaenioglossa - Calyptraeidae
Crepidula sp. Lamarck 1799 slipper shell
Bivalvia
 Carditida - Carditidae
"Glans affinis" = Carditamera affinis
"Glans affinis" = Carditamera affinis Sowerby 1823 clam
SUBSPECIES: Glans affinis californica
 Lucinida - Lucinidae
Codakia distinguenda Tryon 1872 clam
 Cardiida - Cardiidae
"Cardium procerum" = Mexicardia procera
"Cardium procerum" = Mexicardia procera Sowerby 1833 cockle
 Cardiida - Solecurtidae
"Tagelus californianus" = Tagelus (Tagelus) californianus
"Tagelus californianus" = Tagelus (Tagelus) californianus Conrad 1837 clam
 Cardiida - Semelidae
Semele flavescens Gould 1851 clam
 Cardiida - Tellinidae
"Apolymetis cf. cognata" = Leporimetis cognata
"Apolymetis cf. cognata" = Leporimetis cognata Pilsbry and Vanatta 1902 tellin clam
 Cardiida - Chamidae
Chama frondosa Broderip 1835 jewel box
SUBSPECIES: Chama frondosa mexicana
 Cardiida - Veneridae
Dosinia ponderosa Gray 1838 venus clam
Chione cf. californiensis Broderip and Sowerby I 1835 venus clam
Megapitaria squalida Sowerby 1833 venus clam
 Mytilida - Mytilidae
Modiolus capax Conrad 1837 mussel
Lithophaga sp. Röding 1798 mussel
 Ostreida - Ostreidae
"Ostrea palmula" = Saccostrea palmula
"Ostrea palmula" = Saccostrea palmula Carpenter 1857 oyster
 Pectinida - Pectinoidae
"Pecten vogdesi" = Euvola vogdesi Arnold 1906 scallop
Argopecten ventricosus1 Sowerby 1842 calico scallop
 Pectinida - Anomiidae
Anomia peruviana d'Orbigny 1846 jingle
Gymnolaemata
 Cheilostomata - Electridae
Conopeum commensale Kirkpatrick and Metzelaar 1922
 Cheilostomata - Microporidae
 Cheilostomata - Hippoporidridae
"Hippopodinella adpressa" = Odontoporella
"Hippopodinella adpressa" = Odontoporella
Thecostraca
 Balanomorpha - Tetraclitidae
Tetraclita squamosa Bruguière 1789 green volcano barnacle
 Balanomorpha - Balanidae
Balanus sp. Da Costa 1778 barnacle
Malacostraca
 Decapoda - Eriphiidae
Eriphia squamata Stimpson 1859 crab