3-4 miles north of Casa Saman, Chira Valley (Eocene of Peru)

Also known as Bahovar Fm

Where: Piura, Peru (5.2° S, 80.6° W: paleocoordinates 7.7° S, 73.5° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Chira Formation, Priabonian (38.0 - 33.9 Ma)

• unclear in pub - may come from the Sal Chica beds within the Chira Fm

•upper Eocene according to Higley 2004

• formation-level stratigraphic resolution

Environment/lithology: marine; poorly lithified, black, carbonaceous shale and white ash

• black, bituminous shale

•on weathering, break down into soft, powdery soil

•bands of white or yellowish volcanic ash found in many localities associated with thin seams of hard, plastery sandstones

Size class: macrofossils

Collection methods: not much info given

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: general faunal/floral analysis

PaleoDB collection 55431: authorized by Linda Ivany, entered by Linda Ivany on 22.10.2005, edited by Austin Hendy and Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Bivalvia
 Arcida - Arcidae
Barbatia indet. Gray 1842 clam
 Arcida - Glycymerididae
Glycymeris indet. Da Costa 1778 clam
 Pectinida - Pectinoidae
Spondylus mimus n. sp. Olsson 1931 scallop
 Carditida - Crassatellidae
"Crassatellites neorhynchus" = Crassatella neorhynchus
"Crassatellites neorhynchus" = Crassatella neorhynchus Olsson 1931 clam
 Carditida - Carditidae
Venericardia indet., "Cardita (Carditamera) indet." = Carditamera
Venericardia indet. Lamarck 1801 clam
"Cardita (Carditamera) indet." = Carditamera Conrad 1838 clam
 Cardiida - Veneridae
"Antigona (Artena) indet." = Artena, "Pitaria (Pitarella) chiraensis n. sp." = Agriopoma (Pitarella) chiraensis, Pitaria (Lamelliconcha) ayabaca n. sp., "Clementia peruviana" = Clementia (Egesta) peruviana, "Clementia peruviana" = Clementia (Egesta) peruviana1
"Antigona (Artena) indet." = Artena Conrad 1870 venus clam
"Pitaria (Pitarella) chiraensis n. sp." = Agriopoma (Pitarella) chiraensis Olsson 1931 venus
Pitaria (Lamelliconcha) ayabaca n. sp. Olsson 1931 venus clam
"Clementia peruviana" = Clementia (Egesta) peruviana Olsson 1928 venus clam
"Clementia peruviana" = Clementia (Egesta) peruviana1 Olsson 1928 venus clam
 Cardiida - Cardiidae
Cardium indet. Linnaeus 1758 cockle
Protocardia indet. Beyrich 1845 cockle
 Lucinida - Lucinidae
Lucina (Lucina) inca n. sp. Olsson 1931 clam
 Protobranchia - Nuculanidae
"Leda indet." = Nuculana
"Leda indet." = Nuculana Link 1807 pointed nut clam
Gastropoda
 Cephalaspidea - Haminoeidae
"Haminea indet." = Haminoea
"Haminea indet." = Haminoea Turton and Kingston 1830 snail
 Architaenioglossa - Ampullinidae
Ampullina indet. FĂ©russac 1822 snail
 Neogastropoda - Buccinidae
Metula peruviana n. sp., "Pseudoliva parinasensis" = Pseudoliva (Buccinorbis) parinasensis
Metula peruviana n. sp. Olsson 1931 true whelk
"Pseudoliva parinasensis" = Pseudoliva (Buccinorbis) parinasensis Woods, in Bosworth 1922 true whelk
var. mancorensis
 Neogastropoda - Nassariidae
Tritiaria chira n. sp. Olsson 1931 snail
 Neogastropoda - Fasciolariidae
"Peruficus lagunitensis" = Glyptostyla lagunitensis Olsson 1929 snail
var. charanalensis n. var.
Mancorus grabaui Olsson 1931 snail
 Neogastropoda - Mitridae
Mitra indet. Lamarck 1798 mitre shell
 Neogastropoda - Volutidae
Peruluta mancorensis Olsson 1928 volute
Chiraluta inca n. sp. Olsson 1931 volute
Lyria peruviana n. sp. Olsson 1931 volute
 Neogastropoda - Turbinellidae
Xancus peruvianus n. sp. Olsson 1928 snail
 Neogastropoda - Muricidae
Yasila chiraensis n. sp. Olsson 1931 murex snail
 Neogastropoda - Harpidae
 Neogastropoda - Turridae
Scobinella meloda n. sp. Olsson 1931 turrid
Turricula (Knefastia) chira n. sp. Olsson 1931 turrid
Turricula (Surcula) sullana n. sp. Olsson 1931 turrid
Turricula (Surcula) piura n. sp. Olsson 1931 turrid
 Neogastropoda - Borsoniidae
Borsonia peruviana n. sp. Olsson 1931 snail
 Stromboidea - Strombidae
Ectinochilus gaudichaudi d'Orbigny 1842 true conch
Rimella peruviana n. sp. Olsson 1931 true conch
 Stromboidea - Thersiteidae
"Strombus chiraensis n. sp." = Oostrombus chiraensis
"Strombus chiraensis n. sp." = Oostrombus chiraensis Olsson 1931 snail
 Stromboidea - Aporrhaidae
Peruchilus culberti n. sp. Olsson 1931 snail
 Ficoidea - Ficidae
Ficus chiraensis n. sp. Olsson 1931 fig shell
 Naticoidea - Naticidae
Polinices (Lunatia) chulucana n. sp., "Polinices (Neverita) quirosana" = Neverita, Polinices (Neverita) subreclusiana n. sp.
Polinices (Lunatia) chulucana n. sp. Olsson 1931 moon snail
"Polinices (Neverita) quirosana" = Neverita moon snail
Polinices (Neverita) subreclusiana n. sp. Olsson 1931 moon snail
 Cypraeoidea - Pediculariidae
"Cypraea (Cypraedia) chira n. sp." = Cypraedia (Eucypraedia) multicarinata, "Cypraea (Cypraedia) chira" = Cypraedia (Eucypraedia) multicarinata2
"Cypraea (Cypraedia) chira n. sp." = Cypraedia (Eucypraedia) multicarinata Dall 1890 snail
"Cypraea (Cypraedia) chira" = Cypraedia (Eucypraedia) multicarinata2 Dall 1890 snail
 Cypraeoidea - Cypraeidae
Cypraea indet. Linnaeus 1758 cowry
 Sorbeoconcha - Potamididae
Potamides chira n. sp. Olsson 1931 horn snail
 Sorbeoconcha - Turritellidae
Turritella chira Olsson 1928 turret shell
Turritella gilbertharrisi Hodson 1926 turret shell
Turritella samanensis Olsson 1928 turret shell
 Sorbeoconcha - Pachychilidae
Faunus (Pseudofaunus) chiraensis n. sp. Olsson 1931 snail
 Heterostropha - Acteonidae
Tornatellaea indet. Conrad 1860 snail
 Heterostropha - Mathildidae
Tuba indet. Lea 1823 snail
 Neritoidea - Neritidae
Nerita indet. Linnaeus 1758 snail
 Architectonicoidea - Architectonicidae
Architectonica sullana Olsson 1928 sundial
Architectonica chiraensis n. sp. Olsson 1928 sundial
Cephalopoda
 Nautilida - Aturiidae
Aturia peruviana Olsson 1928 nautiloid
Aturia alabamensis var. peruviana