PSst-1-RS (39-42 m) - Rio Grande do Sul (Holocene of Brazil)

Where: Brazil (30.2° S, 50.5° W: paleocoordinates 30.2° S, 50.5° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Holocene (0.0 - 0.0 Ma)

• STRATIGRAPHIC RELATIONS: Unknown lithostratigraphic unit. THICKNESS: From drill hole of at least 45 m thick, from 3 m thick unit. AGE: Holocene, based of faunal similarity with Uruguan and Argentinian Holocene assemblages. STRATIGRAPHIC POSITION: From 39-42 m in drill hole.

• bed-level stratigraphic resolution

Environment/lithology: coastal; unlithified siliciclastic sediments

• ENVIRONMENT: Shallow siliciclastic marine environment.
• SPECIFIC LITHOLOGY: Unknown lithology, presumably from unlithified siliciclastic facies. LITHIFICATION: Presumably unlithified given age and figured specimens.

Size class: macrofossils

Collection methods: core,

• COLLECTOR: Petrobas Petroleum Company. REPOSITORY: Unknown repository, possibly the School of Geology, National Science Institute, Brazil.

Primary reference: I. R. da Silva Forti. 1969. Cenozoic Mollusks from the drillholes Cassino and Palmares do Sul of the Coastal Plain of Rio Grande do Sul. Iheringia Geologia 2:55-155 [A. Hendy/A. Hendy/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 72122: authorized by Austin Hendy, entered by Austin Hendy on 25.05.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropoda and bivalvia. Other groups not discussed. NOMENCLATURE: Authoritative publication with subgenus and species level designations, but nevertheless somewhat antiquated.
Show authors, comments, and common names
Gastropoda
 Trochoidea - Tegulidae
"Tegula (Agathistoma) "sp. A"" = Agathistoma, "Tegula patagonica" = Agathistoma patagonicum
"Tegula (Agathistoma) "sp. A"" = Agathistoma snail
"Tegula patagonica" = Agathistoma patagonicum d'Orbigny 1835 snail
 Trochoidea - Trochidae
Halistylus columna
Halistylus columna Dall 1890 top snail
 Neotaenioglossa - Calyptraeidae
Crepidula (Crepidula) protea, "Crepidula (Bostrycapulus) aculeata" = Bostrycapulus aculeatus
Crepidula (Crepidula) protea d'Orbigny 1941 slipper shell
"Crepidula (Bostrycapulus) aculeata" = Bostrycapulus aculeatus Gmelin 1791 slipper shell
 Cerithioidea - Scaliolidae
"Alabina cerithidioides" = Finella dubia
"Alabina cerithidioides" = Finella dubia d'Orbigny 1840 snail
[entered as Alabina cerithioides]
 Cerithioidea - Planaxidae
Fossarus florius
 Epitonioidea - Epitoniidae
"Epitonium (Epitonium) georgettina" = Epitonium georgettinum
"Epitonium (Epitonium) georgettina" = Epitonium georgettinum Kiener 1838 wentletrap
 Neogastropoda - Olividae
Olivancillaria deshayesiana, Olivella (Olivina) tehuelchana
Olivancillaria deshayesiana Ducros 1857 olive snail
Olivella (Olivina) tehuelchana d'Orbigny 1841 olive snail
 Neogastropoda - Nassariidae
Nassarius coppingeri, Nassarius (Hinia) ambiguus
 Neogastropoda - Columbellidae
Anachis (Anachis) catenata, "Anachis (Costoanachis) avara" = Costoanachis avara, "Anachis (Costoanachis) obesa" = Parvanachis obesa
"Anachis (Costoanachis) avara" = Costoanachis avara Say 1822 snail
"Anachis (Costoanachis) obesa" = Parvanachis obesa Adams 1845 snail
 Neogastropoda - Drilliidae
"Drillia patagonica" = Spirotropis patagonica
"Drillia patagonica" = Spirotropis patagonica d'Orbigny 1841 snail
 Sorbeoconcha - Hydrobiidae
"Littoridina australis" = Heleobia australis
"Littoridina australis" = Heleobia australis d'Orbigny 1837 snail
 Sorbeoconcha - Caecidae
"Caecum (Elephantanellum) imbricatum" = Caecum imbricatum
"Caecum (Elephantanellum) imbricatum" = Caecum imbricatum Carpenter 1858 snail
 Sorbeoconcha - Naticidae
Tectonatica pusilla, "Natica (Natica) isabelleana" = Notocochlis isabelleana
Tectonatica pusilla Say 1822 moon snail
"Natica (Natica) isabelleana" = Notocochlis isabelleana d'Orbigny 1840 moon snail
 Heterostropha - Pyramidellidae
"Odostomia (Chrysallida) seminuda" = Boonea seminuda, Turbonilla cf. atypha
"Odostomia (Chrysallida) seminuda" = Boonea seminuda Adams 1839 snail
Bivalvia
 Nuculida - Nuculidae
"Nucula (Nucula) semiornata" = Nucula (Lamellinucula) semiornata, "Nucula (Ennucula) puelcha" = Ennucula puelcha
"Nucula (Nucula) semiornata" = Nucula (Lamellinucula) semiornata d'Orbigny 1846 nut clam
"Nucula (Ennucula) puelcha" = Ennucula puelcha d'Orbigny 1842 nut clam
 Carditida - Crassatellidae
Crassinella maldonadoensis
Crassinella maldonadoensis Pilsbry 1897 clam
 Carditida - Carditidae
"Carditamera (Carditamera) plata" = Carditamera plata
"Carditamera (Carditamera) plata" = Carditamera plata Ihering 1907 clam
 Lucinida - Lucinidae
Divaricella "sp. A"
Divaricella "sp. A" Martens 1880 clam
 Pholadida - Corbulidae
"Caryocorbula (Hexacorbula) sp." = Hexacorbula
"Caryocorbula (Hexacorbula) sp." = Hexacorbula Olsson 1932 clam
 Pholadida - Myidae
"Corbula iheringiana" = Sphenia iheringiana
"Corbula iheringiana" = Sphenia iheringiana Pilsbry 1897 softshell clam
 Cardiida - Veneridae
"Protothaca antiqua" = Ameghinomya antiqua, Anomalocardia brasiliana, "Pitar (Pitar) rostratum" = Pitar rostratus
"Protothaca antiqua" = Ameghinomya antiqua King 1832 venus clam
Anomalocardia brasiliana Gmelin 1792 venus clam
"Pitar (Pitar) rostratum" = Pitar rostratus Koch 1943 venus clam
 Cardiida - Mactridae
"Mactra (Mactra) patagonica" = Mactra patagonica
"Mactra (Mactra) patagonica" = Mactra patagonica d'Orbigny 1846 clam
 Cardiida - Cardiidae
Trachycardium sp.
Trachycardium sp. Mörch 1853 cockle
 Cardiida - Semelidae
Abra aequalis
Abra aequalis Say 1822 abra
 Arcida - Arcidae
Anadara (Cunearca) brasiliana, "Anadara (Lunarca) ovalis" = Lunarca ovalis
"Anadara (Lunarca) ovalis" = Lunarca ovalis Bruguiere 1789 ark
 Pectinida - Plicatulidae
Plicatula gibbosa
Plicatula gibbosa Lamarck 1801 scallop
 Pectinida - Pectinoidae
"Pecten (Chlamys) tehuelchus" = Aequipecten tehuelchus
"Pecten (Chlamys) tehuelchus" = Aequipecten tehuelchus d'Orbigny 1842 scallop