Gulf of California section 1 "beach berm" fauna (Pleistocene of Mexico)

Also known as Section 1 - Beach berm shell bed type

Where: Sonora, Mexico (31.8° N, 114.1° W: paleocoordinates 31.8° N, 114.1° W)

• coordinate estimated from map

• outcrop-level geographic resolution

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

• Pleistocene fluvial, eolian, and deltaic deposits exposed in sea cliffs, overlain by coquina bed (dated at 125,00 bp)

• bed-level stratigraphic resolution

Environment/lithology: foreshore; unlithified, bioturbated, shelly/skeletal sandstone

• active trans-tensional rift basin
• Planar bedded and low-angle corss-bedded shell hash sands are associated with shell bed. Bioturbation limited to rare

Size class: macrofossils

Collection methods: bulk,

• No comments on collection metholodolgy

Primary reference: K.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]more details

Purpose of describing collection: taphonomic analysis

PaleoDB collection 34933: authorized by Austin Hendy, entered by Austin Hendy on 20.10.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Cirripedia
  -
Bivalvia
 Arcida - Glycymerididae
Glycymeris sp. Da Costa 1778 clam
 Pectinida - Pectinoidae
Pectinidae indet. Wilkes 1810 scallop
 Pholadida - Corbulidae
"Corbula bicarinata" = Juliacorbula bicarinata
"Corbula bicarinata" = Juliacorbula bicarinata Sowerby 1833 clam
 Cardiida - Anatinellidae
Raeta sp. Gray 1853 clam
 Cardiida - Mactridae
Mactra sp. Linnaeus 1767 clam
 Cardiida - Veneridae
Chione sp. von Mühlfield 1811 venus clam
Chione californiensis Broderip and Sowerby I 1835 venus clam
"Chione gnidia" = Chionopsis gnidia Broderip and Sowerby I 1829 venus clam
"Dosinia ponderosa" = Dosinia (Dosinia) ponderosa Gray 1838 venus clam
Pitar sp. Römer 1857 venus clam
 Cardiida - Solecurtidae
Tagelus sp. Gray 1847 clam
 Cardiida - Tellinidae
"Florimetis cognata" = Psammotreta (Leporimetis) cognata Pilsbry and Vanatta 1902 tellin clam
Tellina sp. Linnaeus 1758 tellin clam
 Cardiida - Cardiidae
Trachycardium sp. Mörch 1853 cockle
Gastropoda
 Neogastropoda - Olividae
Olivella dama Mawe 1828 olive snail
 Neogastropoda - Columbellidae
Anachis sp. Adams and Adams 1853 snail
 Neogastropoda - Nassariidae
Nassarius sp. Duméril 1806 snail
 Neogastropoda - Conidae
Conus sp. Linnaeus 1758 cone shell
 Naticoidea - Naticidae
"Polinices recluzianus" = Glossaulax reclusiana
"Polinices recluzianus" = Glossaulax reclusiana Deshayes 1839 moon snail
 Sorbeoconcha - Potamididae
Cerithidea sp. Swainson 1840 horn snail
 Sorbeoconcha - Turritellidae
Turritella sp. Lamarck 1799 turret shell
Scaphopoda
  -
Scaphopoda indet. Bronn 1862 tusk shell
Echinoidea
 Clypeasteroida - Mellitidae
Encope sp. Agassiz 1840 sand dollar