Gulf of California section 1 "beach berm" fauna: Late/Upper Pleistocene, Mexico

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Murexella sp.
1 %-specimens
Echinoidea - Clypeasteroida - Mellitidae
Encope sp. Agassiz 1840
1 %-specimens
Scaphopoda
Scaphopoda indet. Bronn 1862
1 %-specimens
Gastropoda - Turritellidae
Turritella sp. Lamarck 1799
5 %-specimens
Gastropoda - Potamididae
Cerithidea sp. Swainson 1840
1 %-specimens
Gastropoda - Naticidae
Polinices recluzianus (Deshayes 1839)
1 %-specimens
recombined as Glossaulax reclusiana
Gastropoda - Neogastropoda - Columbellidae
Anachis sp. Adams and Adams 1853
1 %-specimens
Gastropoda - Neogastropoda - Nassariidae
Nassarius sp. Duméril 1806
4 %-specimens
Gastropoda - Neogastropoda - Conidae
Conus sp. Linnaeus 1758
1 %-specimens
Gastropoda - Neogastropoda - Olividae
Olivella dama (Mawe 1828)
5 %-specimens
Bivalvia - Pectinida - Pectinidae
Pectinidae indet. Wilkes 1810
Bivalvia - Arcida - Glycymerididae
Glycymeris sp. Da Costa 1778
1 %-specimens
Bivalvia - Cardiida - Cardiidae
Trachycardium sp. Mörch 1853
7 %-specimens
Bivalvia - Cardiida - Solecurtidae
Tagelus sp. Gray 1847
1 %-specimens
Bivalvia - Cardiida - Tellinidae
Florimetis cognata (Pilsbry and Vanatta 1902)
1 %-specimens
recombined as Psammotreta (Leporimetis) cognata
Tellina sp. Linnaeus 1758
1 %-specimens
Bivalvia - Cardiida - Veneridae
Chione sp. von Mühlfield 1811
4 %-specimens
Chione californiensis (Broderip and Sowerby I 1835)
17 %-specimens
Dosinia ponderosa (Gray 1838)
4 %-specimens
Chione gnidia (Broderip and Sowerby I 1829)
25 %-specimens
recombined as Chionopsis gnidia
Pitar sp. Römer 1857
8 %-specimens
Bivalvia - Cardiida - Mactridae
Mactra sp. Linnaeus 1767
1 %-specimens
Bivalvia - Cardiida - Anatinellidae
Raeta sp. Gray 1853
1 %-specimens
Bivalvia - Pholadida - Corbulidae
Corbula bicarinata Sowerby 1833
1 %-specimens
recombined as Juliacorbula bicarinata
Thecostraca
Cirripedia indet. Rafinesque 1816
see common names

Geography
Country:Mexico State/province:Sonora
Coordinates: 31.8° North, 114.1° West (view map)
Paleocoordinates:31.8° North, 114.1° West
Basis of coordinate:estimated from map
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: Pleistocene fluvial, eolian, and deltaic deposits exposed in sea cliffs, overlain by coquina bed (dated at 125,00 bp)
Lithology and environment
Primary lithology:"cross stratification",planar lamination,bioturbation,shelly/skeletal unlithified sandstone
Includes fossils?Y
Lithology description: Planar bedded and low-angle corss-bedded shell hash sands are associated with shell bed. Bioturbation limited to rare
Environment:foreshore Tectonic setting:rift
Geology comments: active trans-tensional rift basin
Taphonomy
Modes of preservation:body
Degree of concentration:concentrated
Size of fossils:macrofossils
Spatial orientation:preferred
Articulated whole bodies:none
Disassociated major elements:all
Fragmentation:frequent
Bioerosion:frequent
Encrustation:none
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:bulk,field collection
Reason for describing collection:taphonomic analysis
Collection method comments: No comments on collection metholodolgy
Metadata
Also known as:Section 1 - Beach berm shell bed type
Database number:34933
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2003-10-20 09:48:46 Last modified:2013-11-25 13:37:23
Access level:group members Released:2004-10-20 09:48:46
Creative Commons license:CC BY
Reference information

Primary reference:
9379.1% 4820K.H. Meldahl and A. H. Cutler. 1992. Neotectonics and taphonomy; Pleistocene molluscan shell accumulations in the northern Gulf of California. Palaios 7(2):187-197 [A. Miller/A. Hendy/A. Hendy]