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: 4.9° S, 69.9° W (Wright 2013)

• 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: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Tritaria sullana n. sp.
Bivalvia
 Nuculanida - Nuculanidae
"Leda indet." = Nuculana
"Leda indet." = Nuculana Link 1807 pointed nut clam
 Arcida - Arcidae
Barbatia indet.
Barbatia indet. Gray 1842 clam
 Arcida - Glycymerididae
Glycymeris indet.
Glycymeris indet. Da Costa 1778 clam
 Pectinida - Pectinoidae
Spondylus mimus n. sp.
Spondylus mimus n. sp. Olsson 1931 scallop
 Carditida - Carditidae
"Cardita (Carditamera) indet." = Carditamera, Venericardia indet.
"Cardita (Carditamera) indet." = Carditamera Conrad 1838 clam
Venericardia indet. Lamarck 1801 clam
 Carditida - Crassatellidae
"Crassatellites neorhynchus" = Crassatella neorhynchus
"Crassatellites neorhynchus" = Crassatella neorhynchus Olsson 1931 clam
 Cardiida - Veneridae
"Antigona (Artena) indet." = Artena, "Clementia peruviana" = Clementia (Egesta) peruviana, "Clementia peruviana" = Clementia (Egesta) peruviana1, Pitaria (Lamelliconcha) ayabaca n. sp., "Pitaria (Pitarella) chiraensis n. sp." = Agriopoma (Pitarella) chiraensis
"Antigona (Artena) indet." = Artena Conrad 1870 venus clam
"Clementia peruviana" = Clementia (Egesta) peruviana Olsson 1928 venus clam
"Clementia peruviana" = Clementia (Egesta) peruviana1 Olsson 1928 venus clam
Pitaria (Lamelliconcha) ayabaca n. sp. Olsson 1931 venus clam
"Pitaria (Pitarella) chiraensis n. sp." = Agriopoma (Pitarella) chiraensis Olsson 1931 venus
 Cardiida - Cardiidae
Cardium indet., Protocardia indet.
Cardium indet. Linnaeus 1758 cockle
Protocardia indet. Beyrich 1845 cockle
 Lucinida - Lucinidae
Lucina (Lucina) inca n. sp.
Lucina (Lucina) inca n. sp. Olsson 1931 clam
Cephalopoda
 Nautilida - Aturiidae
Aturia peruviana
Aturia peruviana Olsson 1928
Aturia alabamensis var. peruviana
Gastropoda
 Opisthobranchiata - Haminoeidae
"Haminea indet." = Haminoea
"Haminea indet." = Haminoea Turton and Kingston 1830 snail
 Neritoidea - Neritidae
Nerita indet.
Nerita indet. Linnaeus 1758 snail
 Architaenioglossa - Ampullinidae
Ampullina indet.
Ampullina indet. Férussac 1822 snail
 Sorbeoconcha - Thersiteidae
"Strombus chiraensis n. sp." = Oostrombus chiraensis
"Strombus chiraensis n. sp." = Oostrombus chiraensis Olsson 1931 snail
 Sorbeoconcha - Strombidae
Ectinochilus gaudichaudi, Rimella peruviana n. sp.
Ectinochilus gaudichaudi d'Orbigny 1842 true conch
Rimella peruviana n. sp. Olsson 1931 true conch
 Sorbeoconcha - Aporrhaidae
Peruchilus culberti n. sp.
Peruchilus culberti n. sp. Olsson 1931 snail
 Neogastropoda - Muricidae
Yasila chiraensis n. sp.
Yasila chiraensis n. sp. Olsson 1931 murex snail
 Neogastropoda - Volutidae
Chiraluta inca n. sp., Lyria peruviana n. sp., Peruluta mancorensis
Chiraluta inca n. sp. Olsson 1931 volute
Lyria peruviana n. sp. Olsson 1931 volute
Peruluta mancorensis Olsson 1928 volute
 Neogastropoda - Harpidae
Morum (Oniscidea) peruviana n. sp., Morum (Oniscidea) chiraensis n. sp.
 Neogastropoda - Buccinidae
Metula peruviana n. sp.
Metula peruviana n. sp. Olsson 1931 true whelk
 Neogastropoda - Fasciolariidae
Clavilithes (Chiralithes) cynosuris, "Peruficus lagunitensis" = Glyptostyla lagunitensis, Mancorus grabaui
"Peruficus lagunitensis" = Glyptostyla lagunitensis Olsson 1929 snail
var. charanalensis n. var.
Mancorus grabaui Olsson 1931 snail
 Neogastropoda - Nassariidae
Tritiaria chira n. sp.
Tritiaria chira n. sp. Olsson 1931 snail
 Neogastropoda - Turbinellidae
Xancus peruvianus n. sp.
Xancus peruvianus n. sp. Olsson 1928 snail
 Neogastropoda - Costellariidae
Turricula (Knefastia) chira n. sp.
Turricula (Knefastia) chira n. sp. Olsson 1931 ribbed mitre
 Neogastropoda - Pseudolividae
"Pseudoliva parinasensis" = Pseudoliva (Buccinorbis) parinasensis
"Pseudoliva parinasensis" = Pseudoliva (Buccinorbis) parinasensis Woods 1922 snail
var. mancorensis
 Neogastropoda - Mitridae
Mitra indet.
Mitra indet. Lamarck 1798 mitre shell
 Neogastropoda - Clavatulidae
Turricula (Surcula) piura n. sp., Turricula (Surcula) sullana n. sp.
Turricula (Surcula) piura n. sp. Olsson 1931 snail
Turricula (Surcula) sullana n. sp. Olsson 1931 snail
 Neogastropoda - Turridae
Scobinella meloda n. sp.
Scobinella meloda n. sp. Olsson 1931 turrid
 Neogastropoda - Borsoniidae
Borsonia peruviana n. sp.
Borsonia peruviana n. sp. Olsson 1931 snail
 Sorbeoconcha - Cypraeidae
Cypraea indet.
Cypraea indet. Linnaeus 1758 cowry
 Sorbeoconcha - 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
 Sorbeoconcha - Ficidae
Ficus chiraensis n. sp.
Ficus chiraensis n. sp. Olsson 1931 fig shell
 Sorbeoconcha - 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
 Cerithioidea - Potamididae
Potamides chira n. sp.
Potamides chira n. sp. Olsson 1931 horn snail
 Cerithioidea - Turritellidae
Turritella gilbertharrisi, Turritella samanensis, Turritella chira
Turritella gilbertharrisi Hodson 1926 turret shell
Turritella samanensis Olsson 1928 turret shell
Turritella chira Olsson 1928 turret shell
 Cerithioidea - Pachychilidae
Faunus (Pseudofaunus) chiraensis n. sp.
Faunus (Pseudofaunus) chiraensis n. sp. Olsson 1931 snail
 Heterostropha - Acteonidae
Tornatellaea indet.
Tornatellaea indet. Conrad 1860 snail
 Heterostropha - Architectonicidae
Architectonica sullana, Architectonica chiraensis n. sp.
Architectonica sullana Olsson 1928 sundial
Architectonica chiraensis n. sp. Olsson 1928 sundial
 Heterostropha - Mathildidae
Tuba indet.
Tuba indet. Lea 1823 snail
1Olsson 1928; 2Olsson 1930