Santa Lagoon, Rio Santa - Trachycardium-Macoma assemblage: Holocene, Peru
collected by DeVries & Wells

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Pectinida - Pectinidae
Argopecten circularis (Sowerby 1835)
synonym of Argopecten ventricosus
Bivalvia - Pectinida - Anomiidae
Anomia peruviana d'Orbigny 1846
Bivalvia - Cardiida - Cardiidae
Trachycardium procerum (Sowerby 1833)
recombined as Mexicardia procera
Bivalvia - Cardiida - Tellinidae
Macoma grandis (Hanley 1844)
recombined as Psammotreta grandis
Bivalvia - Cardiida - Ungulinidae
Felaniella sericata (Reeve 1850)
recombined as Diplodonta (Felaniella) sericata
Bivalvia - Cardiida - Veneridae
Chione broggi (Pilsbry and Olsson 1943)
synonym of Iliochione subrugosa
Gastropoda - Opisthobranchia - Bullidae
Bulla punctulata Adams 1850
Gastropoda - Heterostropha - Ellobiidae
Melampus informal sp. 2 Montfort 1810
Gastropoda - Neogastropoda - Columbellidae
Anachis varicosa (Gaskoin 1852)
recombined as Anachis (Costoanachis) varicosa
Gastropoda - Neogastropoda - Nassariidae
Nassarius luteostoma (Broderip and Sowerby 1829)
Gastropoda - Neogastropoda - Muricidae
Thais chocolata (Duclos 1832)
recombined as Stramonita chocolata
Gastropoda - Neotaenioglossa - Calyptraeidae
Crepidula dilatata Lamarck 1822
recombined as Crepipatella dilatata
see common names

Geography
Country:Peru
Coordinates: 9.0° South, 78.6° West (view map)
Paleocoordinates:9.0° South, 78.6° West
Basis of coordinate:based on nearby landmark
Geographic resolution:local area
Time
Period:Quaternary Epoch:Holocene
10 m.y. bin:Cenozoic 6
Key time interval:Holocene
Age range of interval:0.01170 - 0.00000 m.y. ago
Age estimate:7035 ± 145 to 4270 ± 85 YBP (14C (calibrated))
Stratigraphy
Stratigraphic resolution:group of beds
Stratigraphy comments: LITHOSTRATIGRAPHY: From an unnamed lithostratigraphic unit, for which lithostratigraphic relationships are not discussed. AGE: 6500-4300 yr B.P., on the basis of radiocarbon dating. STRATIGRAPHIC RELATIONS: From beach ridges.
Lithology and environment
Primary lithology: unlithified "siliciclastic"
Includes fossils?Y
Lithology description: LITHOLOGY: Unknown, but presumably siliciclastic.
Environment:coastal indet.
Geology comments: ENVIRONMENT: 2-3 m depth, strong currents, but without significant wave agitation.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:paleoecologic analysis
Museum repositories:UCMP
Collectors:DeVries & Wells
Collection method comments: COLLECTORS: DeVries, T.J., and Wells, L.E., c. late 1980's. RESPOSITORY: Presumably UCMP, Berkeley.
Taxonomic list comments:COVERAGE: Limited to characteristic Mollusca. NOMENLCATURE: Not an authoritative publication, but with modern nomenclature, and species-resolution identifications.
Metadata
Database number:97645
Authorizer:A. Hendy Enterer:A. Hendy
Research group:marine invertebrate
Created:2010-08-17 15:58:29 Last modified:2013-11-25 13:37:23
Access level:authorizer only Released:2011-08-17 15:58:29
Creative Commons license:CC BY
Reference information

Primary reference:
33340. T. J. DeVries and L. E. Wells. 1990. Thermally-anomalous Holocene molluscan assemblages from coastal Peru: evidence for paleogeographic, not climatic change. Palaeogeography, Palaeoclimatology, Palaeoecology 81:11-32 [A. Hendy/A. Hendy]