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. This list is comprised of assemblages from undifferentiated sections of the Zorritos Fm
• formation-level stratigraphic resolution
Environment/lithology: coastal; poorly lithified sandstone and poorly lithified conglomerate
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 59002: authorized by Austin Hendy, entered by Austin Hendy on 05.03.2006
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Turritella alturana turret shell
Turritella inca Grzybowski 1899 turret shell | |
Malea ringens Swainson 1822 tun shell | |
"Cancellaria (Aphera) peruana" = Aphera peruana
"Cancellaria (Aphera) peruana" = Aphera peruana Nelson 1870 snail | |
"Murex laqueoratus" = Trajana (Trajana) laqueorata
"Murex laqueoratus" = Trajana (Trajana) laqueorata Spieker 1922 snail | |
Marginella incrassata margin shell | |
Terebra tuberosa auger snail | |
"Calliostoma (Eutrochus) noduliferum" = Calliostoma noduliferum
"Calliostoma (Eutrochus) noduliferum" = Calliostoma noduliferum Nelson 1870 top snail | |
Turbo belli snail | |
Bivalvia | |
"Leda peruviana" = Saccella peruviana
"Leda peruviana" = Saccella peruviana Dall 1895 pointed nut clam | |
"Corbula (Aloidis) bradleyi" = Varicorbula bradleyi
"Corbula (Aloidis) bradleyi" = Varicorbula bradleyi Nelson 1870 clam | |
| |
Mulinia zorritoensis clam | |
"Labiosa (Raeta) ventricosa" = Raeta
"Labiosa (Raeta) ventricosa" = Raeta clam | |
"Tagelus gibbus" = Tagelus plebeius
"Tagelus gibbus" = Tagelus plebeius Lightfoot 1786 clam | |
"Tellina (Angulus) pressa" = Tellina (Eurytellina) pressa
"Tellina (Angulus) pressa" = Tellina (Eurytellina) pressa Dall 1900 tellin clam | |
"Cardium (Trachycardium) peruvianum" = Trachycardium
"Cardium (Trachycardium) peruvianum" = Trachycardium cockle | |
"Arca (Cunearca) zorritoensis" = Anadara (Cunearca) zorritoensis, "Arca (Scapharca) larkinii" = Larkinia larkinii
"Arca (Cunearca) zorritoensis" = Anadara (Cunearca) zorritoensis Spieker 1922 ark
"Arca (Scapharca) larkinii" = Larkinia larkinii Nelson 1870 ark |