SW Turtle Bay (Pleistocene fauna) (Pleistocene of Mexico)

Where: Sonora, Mexico (27.7° N, 114.9° W: paleocoordinates 27.6° N, 114.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Pleistocene (2.6 - 0.0 Ma)

• 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.

• bed-level stratigraphic resolution

Environment/lithology: coastal; sandstone

• SPECIFIC LITHOLOGY: Unknown, presumably siliciclastic. LITHIFICATION: Unknown.

Size class: macrofossils

Collected by Chace in 1954

• COLLECTOR: E.P. Chace, 1954. REPOSITORY: Unknown, possible SDNHM.

Primary reference: 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]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 96565: authorized by Austin Hendy, entered by Austin Hendy on 12.06.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Not an authoritative publication, with somewhat antiquated nomenclature, but with species-resolution identifications. Identified by L.G. Hertlein.
Gastropoda
 Trochoidea - Turbinidae
"Turbo fluctuosus" = Turbo (Callopoma) fluctuosus
"Turbo fluctuosus" = Turbo (Callopoma) fluctuosus Wood 1828 snail
 Trochoidea - Trochidae
"Tegula gallina" = Chlorostoma gallina, "Tegula aureotincta" = Chlorostoma aureotincta
"Tegula gallina" = Chlorostoma gallina Forbes 1850 top snail
"Tegula aureotincta" = Chlorostoma aureotincta Forbes 1852 top snail
 Neotaenioglossa - Calyptraeidae
Crepidula onyx Sowerby 1824 slipper shell
"Crucibulum imbricatum" = Crucibulum (Dispotaea) imbricata Sowerby 1824 slipper shell
Crucibulum spinosum Conrad 1855 slipper shell
 Sorbeoconcha - Strombidae
"Strombus granulatus" = Persististrombus granulatus
"Strombus granulatus" = Persististrombus granulatus Swainson 1822 true conch
 Neogastropoda - Olividae
"Olivella biplicata" = Callianax biplicata Sowerby 1825 olive snail
Oliva davisac olive snail
Oliva incrassata Lightfoot 1786 olive snail
 Neogastropoda - Nassariidae
"Nassarius tegulus" = Phrontis tegula
"Nassarius tegulus" = Phrontis tegula Reeve 1853 snail
 Neogastropoda - Clavatulidae
 Neogastropoda - Conidae
Conus perplexus Sowerby 1857 cone shell
Conus fergusoni Sowerby 1875 cone shell
"Conus californicus" = Californiconus californicus Reeve 1844 cone shell
 Neogastropoda - Terebridae
Terebra armillata auger snail
 Neogastropoda - Pseudolividae
Macron aethiops Reeve 1847 snail
 Neogastropoda - Muricidae
Thais biserialis de Blainville 1832 murex snail
Eupleura triquetra Reeve 1844 murex snail
"Purpura festiva" = Pteropurpura festiva Hinds 1844 murex snail
"Acanthina lugubre" = Mexacanthina lugubris Sowerby I 1822 murex snail
 Neogastropoda - Cancellariidae
"Cancellaria cassidiformis" = Euclia cassidiformis
"Cancellaria cassidiformis" = Euclia cassidiformis Sowerby 1832 snail
 Sorbeoconcha - Bursidae
"Bursa californica" = Crossata ventricosa
"Bursa californica" = Crossata ventricosa Broderip 1833 frog shell
 Sorbeoconcha - Cypraeidae
"Cypraea annettae" = Pseudozonaria annettae, "Cypraea arabicula" = Pseudozonaria arabicula
"Cypraea annettae" = Pseudozonaria annettae Dall 1909 cowry
"Cypraea arabicula" = Pseudozonaria arabicula Lamarck 1810 cowry
 Sorbeoconcha - Naticidae
"Polinices recluzianus" = Glossaulax reclusiana
"Polinices recluzianus" = Glossaulax reclusiana Deshayes 1839 moon snail
 Sorbeoconcha - Hipponicidae
Antisabia panamensis2 Adams 1852 hoof shell
 Sorbeoconcha - Truncatellidae
Truncatella californica Pfeiffer 1857 snail
 Patellida - Lottiidae
Lottia gigantea Sowerby 1834 limpet
Bivalvia
 Arcida - Noetiidae
"Arca solida" = Arcopsis solida
"Arca solida" = Arcopsis solida Sowerby I 1833 clam
 Arcida - Arcidae
"Arca reeveana" = Barbatia (Cucullaearca) reeveana, "Arca gradata" = Barbatia (Acar) gradata
"Arca reeveana" = Barbatia (Cucullaearca) reeveana d'Orbigny 1846 clam
"Arca gradata" = Barbatia (Acar) gradata Broderip and Sowerby 1829 miniature ark
 Pectinida - Anomiidae
Anomia peruviana d'Orbigny 1846 jingle
 Pectinida - Pectinoidae
Argopecten ventricosus1 Sowerby 1842 calico scallop
 Ostreida - Ostreidae
"Dendostrea angelica" = Ostrea angelica3
"Dendostrea angelica" = Ostrea angelica3 Rochebrune 1895 oyster
 Lucinida - Lucinidae
"Lucina nuttalli" = Lucinisca nuttalli
"Lucina nuttalli" = Lucinisca nuttalli Conrad 1837 clam
 Pholadida - Pholadidae
Pholadidae indet. Lamarck 1809 clam
 Cardiida - Chamidae
"Pseudochama exogyra" = Chama exogyra
"Pseudochama exogyra" = Chama exogyra Conrad 1837 jewel box
 Cardiida - Veneridae
Megapitaria squalida Sowerby 1833 venus clam
"Chione gnidia" = Chionopsis gnidia Broderip and Sowerby I 1829 venus clam
Chione californiensis Broderip and Sowerby I 1835 venus clam
"Protothaca grata" = Leukoma grata Say 1831 venus clam
 Cardiida - Ungulinidae
Diplodonta orbella Gould 1851 clam
 Cardiida - Cardiidae
"Trachycardium procerum" = Mexicardia procera
"Trachycardium procerum" = Mexicardia procera Sowerby 1833 cockle
 Cardiida - Tellinidae
"Apolymetis biangulata" = Leporimetis obesa
"Apolymetis biangulata" = Leporimetis obesa Deshayes 1855 tellin clam
 Cardiida - Semelidae
Semele flavescens Gould 1851 clam
 Carditida - Crassatellidae
Crassinella cf. varians Carpenter 1857 clam
 Life -
"Astraea undosa" = Megastraea undosa
"Astraea undosa" = Megastraea undosa Wood 1828