SW Turtle Bay (Pleistocene fauna): Pleistocene, Mexico
collected by Chace 1954

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Neotaenioglossa - Calyptraeidae
Crepidula onyx Sowerby 1824
Crucibulum imbricatum (Sowerby 1824)
recombined as Crucibulum (Dispotaea) imbricata
Crucibulum spinosum Conrad 1855
Gastropoda - Naticidae
Polinices recluzianus (Deshayes 1839)
recombined as Glossaulax reclusiana
Gastropoda - Bursidae
Bursa californica (Hinds 1843)
synonym of Crossata ventricosa
Gastropoda - Cypraeidae
Cypraea arabicula Lamarck 1810
recombined as Pseudozonaria arabicula
Cypraea annettae Dall 1909
recombined as Pseudozonaria annettae
Gastropoda - Neogastropoda - Olividae
Oliva davisac
Oliva incrassata (Lightfoot 1786)
Olivella biplicata (Sowerby 1825)
recombined as Callianax biplicata
Gastropoda - Neogastropoda - Cancellariidae
Cancellaria cassidiformis Sowerby 1832
recombined as Euclia cassidiformis
Gastropoda - Neogastropoda - Pseudolividae
Macron aethiops (Reeve 1847)
Gastropoda - Neogastropoda - Nassariidae
Nassarius tegulus (Reeve 1853)
recombined as Phrontis tegula
Gastropoda - Neogastropoda - Muricidae
Vitularia salebrosa
Eupleura triquetra (Reeve 1844)
Purpura festiva (Hinds 1844)
recombined as Pteropurpura festiva
Thais biserialis (de Blainville 1832)
Acanthina lugubre (Sowerby I 1822)
recombined as Mexacanthina lugubris
Gastropoda - Neogastropoda - Clavatulidae
Turricula maculosa
Gastropoda - Neogastropoda - Terebridae
Terebra armillata
Gastropoda - Neogastropoda - Conidae
Conus californicus Reeve 1844
recombined as Californiconus californicus
Conus purpurascens
Conus perplexus Sowerby 1857
Conus fergusoni Sowerby 1875
Gastropoda - Strombidae
Strombus granulatus Swainson 1822
recombined as Persististrombus granulatus
Gastropoda - Hipponicidae
Hipponix antiquatus (Linnaeus 1767)
    = Antisabia panamensis Adams 1852
Hendy 2020
Gastropoda - Truncatellidae
Truncatella californica Pfeiffer 1857
Gastropoda - Trochidae
Tegula gallina (Forbes 1850)
recombined as Chlorostoma gallina
Tegula aureotincta (Forbes 1852)
recombined as Chlorostoma aureotincta
Gastropoda - Turbinidae
Turbo fluctuosus Wood 1828
recombined as Turbo (Callopoma) fluctuosus
Gastropoda - Patellida - Lottiidae
Lottia gigantea Sowerby 1834
Bivalvia - Pholadida - Pholadidae
Pholadidae indet. Lamarck 1809
Bivalvia - Cardiida - Chamidae
Pseudochama exogyra (Conrad 1837)
original and current combination Chama exogyra
Bivalvia - Cardiida - Ungulinidae
Diplodonta orbella (Gould 1851)
Bivalvia - Cardiida - Veneridae
Megapitaria squalida (Sowerby 1833)
Protothaca grata (Say 1831)
recombined as Leukoma grata
Chione gnidia (Broderip and Sowerby I 1829)
recombined as Chionopsis gnidia
Chione californiensis (Broderip and Sowerby I 1835)
Bivalvia - Cardiida - Tellinidae
Apolymetis biangulata (Carpenter 1856)
synonym of Leporimetis obesa
Bivalvia - Cardiida - Semelidae
Semele flavescens (Gould 1851)
Bivalvia - Cardiida - Cardiidae
Trachycardium procerum (Sowerby 1833)
recombined as Mexicardia procera
Bivalvia - Lucinida - Lucinidae
Lucina nuttalli Conrad 1837
recombined as Lucinisca nuttalli
Bivalvia - Carditida - Crassatellidae
Crassinella cf. varians (Carpenter 1857)
Bivalvia - Pectinida - Pectinidae
Pecten circularis Sowerby 1835
    = Argopecten ventricosus Sowerby 1842
Coan et al. 2000
Bivalvia - Pectinida - Anomiidae
Anomia peruviana d'Orbigny 1846
Bivalvia - Ostreida - Ostreidae
Ostrea cumingiana Dunker 1846
    = Dendostrea angelica Rochebrune 1895
Moore 1987
original and current combination Ostrea angelica
Bivalvia - Arcida - Arcidae
Arca reeveana d'Orbigny 1846
recombined as Barbatia (Cucullaearca) reeveana
Arca gradata Broderip and Sowerby 1829
recombined as Barbatia (Acar) gradata
Bivalvia - Arcida - Noetiidae
Arca solida Sowerby I 1833
recombined as Arcopsis solida
unclassified
Astraea undosa (Wood 1828)
recombined as Megastraea undosa
see common names

Geography
Country:Mexico State/province:Sonora
Coordinates: 27.7° North, 114.9° West (view map)
Paleocoordinates:27.6° North, 114.5° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Quaternary Epoch:Pleistocene
10 m.y. bin:Cenozoic 6
Key time interval:Pleistocene
Age range of interval:2.58000 - 0.01170 m.y. ago
Stratigraphy
Stratigraphic resolution:bed
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From an unknown lithostratigraphic unit.. AGE: Pleistocene, on the basis of molluscan biostratigraphy. STRATIGRAPHIC POSITION: The exposure is about one-fourth mile from the tide line, the top being about 50 feet above it. The total thickness was not determined.
Lithology and environment
Primary lithology: sandstone
Lithology description: SPECIFIC LITHOLOGY: Unknown, presumably siliciclastic. LITHIFICATION: Unknown.
Environment:coastal indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:general faunal/floral analysis
Collectors:Chace Collection dates:1954
Collection method comments: COLLECTOR: E.P. Chace, 1954. REPOSITORY: Unknown, possible SDNHM.
Taxonomic list comments:COVERAGE: Not an authoritative publication, with somewhat antiquated nomenclature, but with species-resolution identifications. Identified by L.G. Hertlein.
Metadata
Database number:96565
Authorizer:A. Hendy Enterer:A. Hendy
Research group:marine invertebrate
Created:2010-06-12 17:24:00 Last modified:2013-11-25 13:37:23
Access level:the public Released:2010-06-12 17:24:00
Creative Commons license:CC BY
Reference information

Primary reference:
32778. E. P. Chace. 1956. Additional notes on the Pliocene and Pleistocene fauna of the Turtle Bay area, Baja California, Mexico. Transactions of the San Diego Society of Natural History 12(9):177-180 [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]
19331 E. J. Moore. 1987. Tertiary Marine Pelycypods of California and Baja California: Plicatulidae to Ostreidae. United States Geological Survey Professional Paper 1228(C):1-53 [A. Hendy/A. Hendy]