Also known as Section 1 - Beach berm shell bed type
Where: Sonora, Mexico (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
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: CC0 (CC0)
Taxonomic list
unclassified | |
Echinoidea | |
Encope sp. Agassiz 1840 sand dollar | |
Cirripedia | |
Cirripedia indet. barnacle | |
Scaphopoda | |
Scaphopoda indet. Bronn 1862 tusk shell | |
Bivalvia | |
Pitar sp., Dosinia ponderosa, Chione sp., Chione californiensis, "Chione gnidia" = Chionopsis gnidia
Pitar sp. Römer 1857 venus clam
Dosinia ponderosa Gray 1838 ponderous dosinia
Chione sp. von Mühlfield 1811 venus clam
Chione californiensis Broderip and Sowerby I 1835 banded chione
"Chione gnidia" = Chionopsis gnidia Broderip and Sowerby I 1829 venus clam | |
Mactra sp. Linnaeus 1767 duck clam | |
Raeta sp. Gray 1853 clam | |
Tagelus sp. Gray 1847 clam | |
Tellina sp., "Florimetis cognata" = Psammotreta (Leporimetis) cognata
Tellina sp. Linnaeus 1758 tellin clam
"Florimetis cognata" = Psammotreta (Leporimetis) cognata Pilsbry and Vanatta 1902 tellin clam | |
Trachycardium sp. Mörch 1853 cockle | |
"Corbula bicarinata" = Juliacorbula bicarinata
"Corbula bicarinata" = Juliacorbula bicarinata Sowerby 1833 clam | |
Pectinidae indet. Wilkes 1810 scallop | |
Glycymeris sp. Da Costa 1778 bittersweet clam | |
Gastropoda | |
Nassarius sp. Duméril 1806 snail | |
Anachis sp. Adams and Adams 1853 dove shell | |
"Olivella dama" = Olivella (Olivella) dama
"Olivella dama" = Olivella (Olivella) dama Mawe 1828 olive snail | |
Conus sp. Linnaeus 1758 cone shell | |
"Polinices recluzianus" = Glossaulax reclusiana
"Polinices recluzianus" = Glossaulax reclusiana Deshayes 1839 Recluz's moon snail | |
Cerithidea sp. Swainson 1840 horn snail | |
Turritella sp. Lamarck 1799 turret shell |