Lomitos Cgl, Talara Fm - Yasila and Jaquay Cunas: Bartonian, Peru

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Cypraedea sp.
Scaphopoda - Dentaliida - Dentaliidae
Dentalium yasilum Olsson 1930
Gastropoda - Heterostropha - Architectonicidae
Architectonica chira
Architectonica sullana Olsson 1928
Gastropoda - Heterostropha - Mathildidae
Tuba peruviana Olsson 1930
Gastropoda - Pseudomelaniidae
Crassispira woodringi n. sp. Olsson 1930
Crassispira capella n. sp. Olsson 1930
Gastropoda - Epitoniidae
Epitonium (Acrilla) paytens
original and current combination Acrilla
Epitonium (Acrilla) peruvianum Olsson 1928
Gastropoda - Turritellidae
Turritella samanensis Olsson 1928
Turritella chira Olsson 1928
Gastropoda - Ampullinidae
Ampullina ortoni Gabb 1870
Gastropoda - Ficidae
Ficus otaria
Gastropoda - Ranellidae
Sassia sp. (Bellardi 1872)
Gastropoda - Bursidae
Bursa chira Olsson 1930
Subspecies: Bursa chira yasila [entered as Bursa chiras]
Gastropoda - Cassidae
? Sconsia samanica Olsson 1928
recombined as Doliocassis samanica
Gastropoda - Eocypraeidae
Amphiperas bullennewtoni n. sp. Olsson 1930
recombined as Sulcocypraea bullennewtoni
Listed as "Amphiperas bullen-newtoni"
Gastropoda - Strombidae
Ectinochilus gaudichaudi (d'Orbigny 1842)
Subspecies: Ectinochilus gaudichaudi alauda
Gastropoda - Neogastropoda - Strepsiduridae
Ancillarina pananga n. sp.
Gastropoda - Neogastropoda - Volutidae
Voluta paytanica n. sp. Olsson 1930
Lyria busera n. sp. Olsson 1930
Plejona (Volutocorbis) sula n. sp. Olsson 1930
Peruluta mancorensis n. sp. (Olsson 1928)
Gastropoda - Neogastropoda - Muricidae
Murex scorpionius n. sp. Olsson 1930
Typhis (Levityphis) thagus n. sp. Olsson 1930
recombined as Typhis (Laevityphis) thagus
Yasila paytensis n. sp. Olsson 1930
Gastropoda - Neogastropoda - Mitridae
Mitra (Tiara) yasila n. sp. Olsson 1930
Gastropoda - Neogastropoda - Olividae
Oliva (Oliva) misti n. sp. Olsson 1930
Gastropoda - Neogastropoda - Olivellidae
Agaronia inca n. sp.
Gastropoda - Neogastropoda - Melongenidae
Melongena (Cornulina) levifusoides Olsson 1928
recombined as Cornulina levifusoides
Gastropoda - Neogastropoda - Buccinidae
Pollia (Endopachychilus) purpuroides n. sp. Olsson 1930
Pollia sillapaytensis n. sp. Olsson 1930
Siphonalia (Pseudoneptunea) nuntia n. sp. Olsson 1930
Terebrifusus placitus n. sp. Olsson 1930
Terebrifusus lepus n. sp. Olsson 1930
Dorsanum lagunitensis (Woods 1922)
Pseudoliva samanica
Pseudoliva sp. Swainson 1840
Pseudoliva coronaria n. sp. Olsson 1930
Gastropoda - Neogastropoda - Fasciolariidae
Peruficus lagunitensis Olsson 1929
recombined as Glyptostyla lagunitensis
Gastropoda - Neogastropoda
Chiralithes cynosuris n. sp.
Gastropoda - Neogastropoda - Turridae
Genotia peruviana n. sp. Olsson 1930
Eopleurotoma wiedeyi n. sp. Olsson 1930
Eopleurotoma paytensis n. sp. Olsson 1930
Hemipleurotoma arenosa n. sp. Olsson 1930
Scobinella (Mitratoma) bartschi n. sp. Olsson 1930
Gastropoda - Neogastropoda - Terebridae
Terebra sp. Bruguière 1789
Terebra negritensis n. sp. Olsson 1930
Gastropoda - Neogastropoda - Clavatulidae
Turricula (Pleurofusia) eolavinia n. sp. Olsson 1930
Gastropoda - Neogastropoda - Conidae
Conus peruvianus n. sp. Olsson 1930
Conus chiraensis n. sp. Olsson 1930
recombined as Conus sauridens chiraensis
Moniliopsis peruviana n. sp. Olsson 1930
? Moniliopsis paytensis n. sp. Olsson 1930
Gastropoda - Neogastropoda - Cancellariidae
Plesiotriton paytensis n. sp. Olsson 1930
Cancellaria (Admete) paytensis n. sp. Olsson 1930
Gastropoda - Neogastropoda - Turbinellidae
Eoxancus paytensis n. sp. (Olsson 1930)
original and current combination Xancus paytensis
Eoxancus talarensis n. sp. Olsson 1930
recombined as Xancus talarensis
Gastropoda - Neogastropoda - Costellariidae
Fusiturricula yasila n. sp. Olsson 1930
Gastropoda - Naticidae
Natica (Nerinatica) paytensis n. sp. Olsson 1930
Natica (Natica) peruviana Olsson 1928
Gastropoda - Turbinidae
Turbo sp. Linnaeus 1758
Gastropoda - Liotiidae
Liotia sp. Gray 1842
Bivalvia - Nuculanida - Nuculanidae
Leda (Adrana) sp. (Adams and Adams 1858)
original and current combination Adrana
Leda sp. Schumacher 1817
synonym of Nuculana
Bivalvia - Ostreida - Ostreidae
Ostrea samanensis Olsson 1928
Bivalvia - Arcida - Glycymerididae
Glycymeris peruvianus n. sp. Olsson 1930
Bivalvia - Lucinida - Lucinidae
Phacoides (Here) andersoni n. sp. Olsson 1930
recombined as Linga (Illesca) andersoni
Phacoides (Miltha) woodi n. sp. Olsson 1930
recombined as Eomiltha woodi
Bivalvia - Pholadida - Raetomyidae
Amotapas arbolensis
Bivalvia - Pholadida - Corbulidae
Corbula sp. Bruguière 1789
Bivalvia - Cardiida - Mactridae
? Mactra sp. Linnaeus 1767
Spisula (Oxyperas) deserta Olsson 1928
recombined as Oxyperas deserta
Bivalvia - Cardiida - Veneridae
Pitaria (Pitaria) yasila n. sp. Olsson 1930
Clementia peruviana n. sp. Olsson 1928
recombined as Clementia (Egesta) peruviana
Pitaria (Lamelliconcha) baldryi Olsson 1928
Pitaria (Lamelliconcha) salsola Olsson 1928
synonym of Lamelliconcha hillii
Bivalvia - Cardiida - Cardiidae
Cardium junceum n. sp. Olsson 1930
recombined as Schedocardia juncea
Bivalvia - Carditida - Carditidae
Venericardia smillina n. sp.
see common names

Geography
Country:Peru State/province:Piura
Coordinates: 5.1° South, 81.2° West (view map)
Paleocoordinates:13.0° South, 109.9° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Paleogene Epoch:Eocene
Stage:Bartonian 10 m.y. bin:Cenozoic 3
Key time interval:Bartonian
Age range of interval:41.20000 - 37.71000 m.y. ago
Stratigraphy
Formation:Talara Member:Talara Shale
Local section:Yasila Local bed:Lomitas conglomerate
Stratigraphic resolution:group of beds
Stratigraphy comments: Regarded as lower Upper Eocene on the basis of faunal similarity. Foraminifera suggest an upper Eocene age. Olsson states that the Talara and Saman rocks can be referred to the Upper Eocene and in terms of the European section, to the Bartonian and Ludian.....respectively? In most places the Talara Formation can be divided into three members, a lower shale (Talara Shale), a middle sandstone (Talara Sandstone), and an upper shale (Pozo Shale). In a complete section the Talara Formation has an average thickness of about 2800 ft. The collection is derived from a sandy basal layer known as the Lomitos Conglomerate in the Talara Shale member, which can reach a thickness of 400 ft or more.
Lithology and environment
Primary lithology:yellow poorly lithified sandstone
Includes fossils?Y
Includes fossils?Y
Lithology description: Yellow sandstone.
Environment:coastal indet.
Geology comments: Appears to be shelfal siliciclastic environment judging from faunal composition.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:selective quarrying,field collection
Reason for describing collection:taxonomic analysis
Collection method comments: No museum repositories are reported, but material may presumably be the AMNH of PRI collections. Because of uncertaintly this field is left ommited.
Taxonomic list comments:Exhaustive for Mollusca.
Metadata
Database number:52526
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:J. Alroy Research group:marine invertebrate
Created:2005-08-10 12:12:51 Last modified:2013-11-25 13:37:23
Access level:the public Released:2005-08-10 12:12:51
Creative Commons license:CC BY
Reference information

Primary reference:
14126. A. A. Olsson. 1930. Contributions to the Tertiary Paleontology of Northern Peru: Part 3, Eocene Mollusca. Bulletins of American Paleontology 17(62):1-164 [A. Miller/A. Hendy/A. Hendy]