Zorritos [Cardalitos Fm] (Miocene of Peru)

Where: Peru (3.7° S, 80.7° W: paleocoordinates 4.4° S, 77.7° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Cardalitos Formation, Middle Miocene (16.0 - 11.6 Ma)

• LITHOSTRATIGRAPHY: From the Cardalitos Fm, which overlies the upper part of the Zorritos Fm. AGE: Middle Miocene. STRATIGRAPHIC POSITION: From unknown position within formation.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; poorly lithified, concretionary, black, carbonaceous shale

• Shales when fresh are black in color and strongly bituminous but weather like the Heath and Chira shales to a dark chocolate color or a dull gray. In some sections there are bands of fullers earth and zones of small, yellow concretions.

Size class: macrofossils

Primary reference: A. A. Olsson. 1932. Contributions to the Tertiary Paleontology of Northern Peru: Part 5, Miocene Mollusca. Bulletins of American Paleontology 19(68):1-272 [A. Miller/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 66179: authorized by Linda Ivany, entered by Linda Ivany on 03.10.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

 Arcida - Arcidae
"Arca (Cunearca) sp." = Anadara (Cunearca), "Arca (Diluvarca) colomba" = Anadara (Tosarca) columba, "Arca (Diluvarca) dariensis" = Anadara (Rasia) dariensis
"Arca (Cunearca) sp." = Anadara (Cunearca) Dall 1898 ark
"Arca (Diluvarca) colomba" = Anadara (Tosarca) columba Olsson 1932 ark
"Arca (Diluvarca) dariensis" = Anadara (Rasia) dariensis Brown and Pilsbry 1911 ark
 Ostreida - Ostreidae
 Carditida - Crassatellidae
 Cardiida - Veneridae
"Chione (Lirophora) grauensis" = Lirophora, "Chione (Chamelia) grzybowski" = Lirophora (Lirophora) grzybowski, Dosinia lenticulata, Pitaria (Pitarella) tumbezensis
"Chione (Lirophora) grauensis" = Lirophora venus clam
"Chione (Chamelia) grzybowski" = Lirophora (Lirophora) grzybowski Olsson 1932 venus clam
 Cardiida - Tellinidae
Tellina sp. Linnaeus 1758 tellin clam
 Hiatellida - Hiatellidae
"Panopea cf. coquimbensis" = Panopea abbreviata
"Panopea cf. coquimbensis" = Panopea abbreviata Valenciennes 1839 clam
 Lucinida - Lucinidae
"Lucina (Here) prosoptera" = Here, Pseudomiltha (Zorrita) petersoni
"Lucina (Here) prosoptera" = Here clam
 Protobranchia - Nuculanidae
"Nuculana (Saccella) acutisinuata" = Saccella
"Nuculana (Saccella) acutisinuata" = Saccella pointed nut clam
Gastropoda indet. Cuvier 1797 snail
"Nassa - Euthria- like gastropod
 Neogastropoda - Buccinidae
 Neogastropoda - Cancellariidae
Cancellaria sp. Lamarck 1799 snail
 Neogastropoda - Conidae
"Conus (Dendroconus) bravoi" = Conus bravoi
"Conus (Dendroconus) bravoi" = Conus bravoi Spieker 1922 cone shell
 Neogastropoda - Thaisidae
"Acanthina (Chorus) solida" = Chorus
"Acanthina (Chorus) solida" = Chorus snail
 Ficoidea - Ficidae
 Naticoidea - Naticidae
Sinum sp. Röding 1798 moon snail
Polinices sp. Monfort 1810 moon snail
 Sorbeoconcha - Turritellidae
"Turritella cf. infracarinata" = Turritella (Turritella) infracarinata Grzybowski 1899 turret shell
"Turritella altilira" = Turritella (Bactrospira) altilira Conrad 1857 turret shell
Turritella abrupta Spieker 1922 turret shell
Turritella filicincta Spieker 1922 turret shell
 Architectonicoidea - Architectonicidae
"Architectonica (Architectonica) sexlinearis" = Architectonica nobilis
"Architectonica (Architectonica) sexlinearis" = Architectonica nobilis Röding 1798 sundial