Quebrada Charanal [Mirador Sandstone, Mancora Fm] (Oligocene of Peru)

Where: Piura, Peru (5.2° S, 80.6° W: paleocoordinates 7.5° S, 74.3° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Mirador Conglomerate Member (Mancora Formation), Early/Lower Oligocene (33.9 - 28.4 Ma)

• lower Mirador sandstones

•basal Oligocene according to Higley 2004

• formation-level stratigraphic resolution

Environment/lithology: marine; poorly lithified, coarse-grained, black conglomerate and poorly lithified sandstone

• Erratic masses of fossiliferous sandstones in a conglomeratic zone interbedded amongst softer sandstone and sandy shales.

Primary reference: A. A. Olsson. 1931. Contributions to the Tertiary Paleontology of Northern Peru: Part 4, The Peruvian Oligocene. Bulletins of American Paleontology 17(63) [L. Ivany/L. Ivany]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 55441: authorized by Linda Ivany, entered by Linda Ivany on 23.10.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

• abundant fish remains, large whale vertebrae, fossil wood are also present
 Carditida - Carditidae
"Venericardia charanalensis n. sp." = Venericardia (Glyptoactis) charanalensis
"Venericardia charanalensis n. sp." = Venericardia (Glyptoactis) charanalensis Olsson 1931 clam
 Pholadida - Corbulidae
Corbula indet. Bruguière 1789 clam
 Cardiida - Chamidae
Chama indet. Linnaeus 1758 jewel box
 Cardiida - Mactridae
Spisula (Oxyperas) steinmanni n. sp. Olsson 1931 clam
 Cardiida - Veneridae
Pitaria (Lamelliconcha) charanica n. sp. Olsson 1931 venus clam
"Clementia peruviana" = Clementia (Egesta) peruviana Olsson 1928 venus clam
 Cardiida - Solecurtidae
Tagelus indet. Gray 1847 clam
 Poromyida - Verticordiidae
Verticordia indet. Sowerby 1844 clam
 Lucinida - Lucinidae
Codakia (Jagonia) peruviana n. sp., "Phacoides (Miltha) woodi n. sp." = Eomiltha woodi
Codakia (Jagonia) peruviana n. sp. Olsson 1931 clam
"Phacoides (Miltha) woodi n. sp." = Eomiltha woodi Olsson 1930 clam
 Nuculida - Nuculidae
Nucula indet. Lamarck 1799 nut clam
 Protobranchia - Nuculanidae
Leda (Saccella) charanica n. sp. Olsson 1931 pointed nut clam
Leda (Saccella) miradorana n. sp. Olsson 1931 pointed nut clam
 Opisthobranchia - Haminoeidae
"Haminea indet." = Haminoea
"Haminea indet." = Haminoea Turton and Kingston 1830 snail
 Neogastropoda - Olividae
Olivella (Lamprodoma) illesca n. sp. Olsson 1931 olive snail
 Neogastropoda - Buccinidae
"Pseudoliva parinasensis" = Pseudoliva (Buccinorbis) parinasensis
"Pseudoliva parinasensis" = Pseudoliva (Buccinorbis) parinasensis Woods 1922 true whelk
P. parinaensis var. mancorensis
 Neogastropoda - Melongenidae
Melongena charanalensis n. sp. Olsson 1931 snail
 Neogastropoda - Fasciolariidae
Mancorus grabaui n. sp. Olsson 1931 snail
 Neogastropoda - Cancellariidae
Cancellaria indet. Lamarck 1799 snail
 Neogastropoda - Volutidae
Peruluta mancorensis Olsson 1928 volute
 Neogastropoda - Harpidae
 Neogastropoda -
 Neogastropoda - Turridae
Surcula ? mayi Hanna and Israelsky 1925 turrid
Polystira indet. Woodring 1928 turrid
 Neogastropoda - Conidae
"Conus chiraensis" = Conus sauridens chiraensis
"Conus chiraensis" = Conus sauridens chiraensis Olsson 1930 cone shell
 Naticoidea - Naticidae
"Polinices (Neverita) quirosana" = Neverita
"Polinices (Neverita) quirosana" = Neverita moon snail
 Tonnoidea - Cassidae
Morum (Oniscidea) dolioides n. sp. Olsson 1931 snail
 Sorbeoconcha - Potamididae
Lagunitus lagunitensis horn snail
L. lagunitensis var. charanalensis, n. var.
 Sorbeoconcha - Turritellidae
Turritella indet. Lamarck 1799 turret shell
Turritella hubbardi Hodson 1926 turret shell
Turritella galvesia n. sp. Olsson 1931 turret shell
 Neritoidea - Neritidae
Nerita indet. Linnaeus 1758 snail
 Architectonicoidea - Architectonicidae
Architectonica sullana Olsson 1928 sundial
 Dentaliida - Dentaliidae
Dentalium indet. Linnaeus 1758 tusk shell