Where: Tumbes, Peru (3.7° S, 80.7° W: paleocoordinates 4.9° S, 76.4° W)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Lower Member (Zorritos Formation), Early/Lower Miocene (23.0 - 16.0 Ma)
• Stated as Early Miocene by Spieker (1922) and corroborated by more recent publications (e.g. see Higley 2004). Overlies the late Oligocene-early Miocene Heath Fm and underlies the Cardalitos Fm in Higley (2004) although Spieker (1922) uses varying lithostratigraphic nomenclature suggesting a "Talara Fm" overlies the upper member of the Zorritos Fm. Its is not clear whether definitions of these members has changed since Spieker. The lower member of the Zorritos Fm is 245 ft thick and comprises sandstone with interbedded shales.
• member-level stratigraphic resolution
Environment/lithology: coastal; poorly lithified, shelly/skeletal, yellow, argillaceous, conglomeratic, calcareous sandstone and poorly lithified, gray, yellow, argillaceous, calcareous, carbonaceous sandstone
Size class: macrofossils
Reposited in the YPM
• Collected by J. Singewald, and with inspection of collections by E.T. Nelson (1870) at Yale University. Possibly also involved inspection of Grzybowski's material (Geol. Inst. of Cracow). Singewald's material is presumably reposited at Johns Hopkins.
Primary reference: E. M. Spieker. 1922. The Paleontology of the Zorritos Formation of the North Peruvian Oil Fields. The Johns Hopkins University Studies in Geology 3:1-196 [A. Miller/A. Hendy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 59001: authorized by Austin Hendy, entered by Austin Hendy on 05.03.2006
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Gastropoda | |
| |
"Turritella altilira" = Turritella (Bactrospira) altilira, Turritella prenuncia, Turritella filicincta, "Turritella charana" = Turritella abrupta
"Turritella altilira" = Turritella (Bactrospira) altilira Conrad 1857 turret shell
Turritella prenuncia Spieker 1922 turret shell
Turritella filicincta Spieker 1922 turret shell
"Turritella charana" = Turritella abrupta Spieker 1922 turret shell | |
"Potamides ormei" = Potamides suprasulcatus
"Potamides ormei" = Potamides suprasulcatus Gabb 1873 horn snail Subspecies: Potamides ormei infraliratus
| |
Solenosteira alternata true whelk
Phos latirugatus Spieker 1922 true whelk | |
Conus bocapanensis Spieker 1922 cone shell
Conus berryi Spieker 1922 cone shell
"Conus multiliratus" = Conasprelloides multiliratus Olsson 1922 cone shell Subspecies: Conus multiliratus gaza
| |
"Terebra gausapata" = Strioterebrum gausapatum
"Terebra gausapata" = Strioterebrum gausapatum Brown and Pilsbry 1911 auger snail Subspecies: Terebra gausapata herviderana
| |
Pyrula peruviana Spieker 1922 fig shell | |
"Cypraea angustirima" = Muracypraea angustirima
"Cypraea angustirima" = Muracypraea angustirima Spieker 1922 cowry | |
Polinices subangulata moon snail
Polinices porcana Spieker 1922 moon snail
Sinum carolanum Spieker 1922 moon snail | |
Bivalvia | |
"Crassatellites (Scambula) berryi" = Eucrassatella (Hybolophus) berryi, "Crassatellites (Scambula) nelsoni" = Hybolophus nelsoni
"Crassatellites (Scambula) berryi" = Eucrassatella (Hybolophus) berryi Spieker 1922 clam
"Crassatellites (Scambula) nelsoni" = Hybolophus nelsoni Grzybowski 1899 clam | |
"Phacoides (Pseudomiltha) insleyi" = Pseudomiltha
"Phacoides (Pseudomiltha) insleyi" = Pseudomiltha clam | |
"Corbula (Cuneocorbula) bravoana" = Tenuicorbula bravoana, "Corbula (Aloidis) prenuncia" = Corbula, "Corbula (Cuneocorbula) fabiformis" = Cuneocorbula
"Corbula (Cuneocorbula) bravoana" = Tenuicorbula bravoana Spieker 1922 clam
"Corbula (Aloidis) prenuncia" = Corbula clam
"Corbula (Cuneocorbula) fabiformis" = Cuneocorbula clam | |
"Chione (Chione) propinqua" = Chione (Chionopsis) propinqua, Chione (Lirophora) hendersonii, "Chione (Lirophora) latilirata" = Lirophora (Lirophora) latilirata, "Dosinia (Dosinidia) delicatissima" = Dosinia (Dosinia) delicatissima, "Pitaria (Lamelliconcha) planivieta" = Lamelliconcha, Transennella herviderana, "Clementia dariena" = Clementia (Clementia) dariena
"Chione (Chione) propinqua" = Chione (Chionopsis) propinqua Spieker 1922 venus clam
Chione (Lirophora) hendersonii Dall 1903 venus clam
"Chione (Lirophora) latilirata" = Lirophora (Lirophora) latilirata Conrad 1841 venus clam
"Dosinia (Dosinidia) delicatissima" = Dosinia (Dosinia) delicatissima Brown and Pilsbry 1913 venus clam
"Pitaria (Lamelliconcha) planivieta" = Lamelliconcha venus clam
Transennella herviderana venus clam
"Clementia dariena" = Clementia (Clementia) dariena Conrad 1855 venus clam | |
"Labiosa (Raeta) gardnerae" = Raeta gardnerae, "Labiosa (Raeta) gabbi" = Raeta gabbi
"Labiosa (Raeta) gardnerae" = Raeta gardnerae Spieker 1922 clam
"Labiosa (Raeta) gabbi" = Raeta gabbi Pilsbry and Johnson 1917 clam | |
"Cardium (Trigoniocardium) affinis" = Trigoniocardia, "Cardium (Trachycardium) zorritoensis" = Trachycardium
"Cardium (Trigoniocardium) affinis" = Trigoniocardia cockle
"Cardium (Trachycardium) zorritoensis" = Trachycardium cockle | |
"Tellina (Angulus) singewaldi" = Angulus, "Tellina zapotalensis" = Psammacoma zapotalensis, "Tellina (Eurytellina) aequicincta" = Eurytellina aequicincta
"Tellina (Angulus) singewaldi" = Angulus tellin clam
"Tellina zapotalensis" = Psammacoma zapotalensis Spieker 1922 tellin clam
"Tellina (Eurytellina) aequicincta" = Eurytellina aequicincta Spieker 1922 tellin clam | |
"Arca (Scapharca) hispaniolana" = Anadara (Cunearca) hispaniolana, "Arca (Scapharca) fissicosta" = Anadara (Rasia) fissicosta, "Arca (Scapharca) zapotalensis" = Scapharca, "Arca (Scapharca) charanensis" = Scapharca, "Arca (Scapharca) singewaldi" = Scapharca, Arca (Scapharca) vanholsti
"Arca (Scapharca) hispaniolana" = Anadara (Cunearca) hispaniolana Maury 1917 ark
"Arca (Scapharca) fissicosta" = Anadara (Rasia) fissicosta Spieker 1922 ark
"Arca (Scapharca) zapotalensis" = Scapharca clam
"Arca (Scapharca) charanensis" = Scapharca clam
"Arca (Scapharca) singewaldi" = Scapharca clam
Arca (Scapharca) vanholsti Spieker 1922 ark |