PSst-1-RS (36-39 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 36-39 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 72121: 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.
 Arcida - Arcidae
"Arca (Scapharca) transversa" = Anadara (Larkinia) transversa Say 1822 ark
 Arcida - Noetiidae
"Noetia (Eontia) bisulcata" = Noetia bisulcata
"Noetia (Eontia) bisulcata" = Noetia bisulcata Lamarck 1819 clam
 Pectinida - Pectinoidae
"Pecten (Chlamys) tehuelchus" = Aequipecten tehuelchus
"Pecten (Chlamys) tehuelchus" = Aequipecten tehuelchus d'Orbigny 1842 scallop
 Pectinida - Plicatulidae
Plicatula gibbosa Lamarck 1801 scallop
 Carditida - Crassatellidae
Crassinella maldonadoensis Pilsbry 1897 clam
 Carditida - Carditidae
"Carditamera (Carditamera) plata" = Carditamera plata
"Carditamera (Carditamera) plata" = Carditamera plata Ihering 1907 clam
 Pholadida - Corbulidae
"Caryocorbula (Hexacorbula) sp." = Hexacorbula, "Caryocorbula (Caryocorbula) caribaea" = Caryocorbula caribaea
"Caryocorbula (Hexacorbula) sp." = Hexacorbula Olsson 1932 clam
"Caryocorbula (Caryocorbula) caribaea" = Caryocorbula caribaea d'Orbigny 1845 clam
 Pholadida - Myidae
"Corbula iheringiana" = Sphenia iheringiana
"Corbula iheringiana" = Sphenia iheringiana Pilsbry 1897 softshell clam
 Cardiida - Mactridae
"Mactra (Mactra) patagonica" = Mactra patagonica
"Mactra (Mactra) patagonica" = Mactra patagonica d'Orbigny 1846 clam
 Cardiida - Veneridae
Clausinella gayi, "Protothaca antiqua" = Ameghinomya antiqua, Anomalocardia brasiliana, "Pitar (Pitar) rostratum" = Pitar rostratus, "Amiantis (Amiantis) purpurata" = Amiantis purpurata
Clausinella gayi Húpe 1854 venus clam
"Protothaca antiqua" = Ameghinomya antiqua King 1832 venus clam
Anomalocardia brasiliana Gmelin 1792 venus clam
"Pitar (Pitar) rostratum" = Pitar rostratus Koch 1943 venus clam
"Amiantis (Amiantis) purpurata" = Amiantis purpurata Lamarck 1818 venus clam
 Cardiida - Donacidae
"Donax hanleyanus" = Donax hilairea
"Donax hanleyanus" = Donax hilairea Guerin 1832 clam
 Cardiida - Tellinidae
Strigilla sp. Turton 1822 tellin clam
 Cardiida - Semelidae
Abra aequalis, "Semele (Semele) bellastriata" = Semele bellastriata
Abra aequalis Say 1822 abra
"Semele (Semele) bellastriata" = Semele bellastriata Conrad 1837 clam
 Lucinida - Lucinidae
"Codakia (Ctena) orbiculata" = Ctena orbiculata, "Lucina (Bellucina) "sp. A"" = Cardiolucina
"Codakia (Ctena) orbiculata" = Ctena orbiculata Montagu 1808 clam
"Lucina (Bellucina) "sp. A"" = Cardiolucina Sacco 1901 clam
 Nuculida - Nuculidae
"Nucula (Ennucula) puelcha" = Ennucula puelcha, "Nucula (Nucula) semiornata" = Nucula (Lamellinucula) semiornata
"Nucula (Ennucula) puelcha" = Ennucula puelcha d'Orbigny 1842 nut clam
"Nucula (Nucula) semiornata" = Nucula (Lamellinucula) semiornata d'Orbigny 1846 nut clam
 Ptenoglossa - Epitoniidae
"Epitonium (Epitonium) georgettina" = Epitonium georgettinum
"Epitonium (Epitonium) georgettina" = Epitonium georgettinum Kiener 1838 wentletrap
 Cephalaspidea - Cylichnidae
Acteocina candei d'Orbigny 1841 barrel-bubble
 Neogastropoda - Olividae
"Olivella (Olivina) tehuelchana" = Olivella (Olivina) tehuelchana, "Olivella (Olivina) puelchana" = Olivella (Olivina) tehuelchana
"Olivella (Olivina) tehuelchana" = Olivella (Olivina) tehuelchana d'Orbigny 1841 olive snail
"Olivella (Olivina) puelchana" = Olivella (Olivina) tehuelchana d'Orbigny 1841 olive snail
 Neogastropoda - Columbellidae
"Anachis (Costoanachis) obesa" = Parvanachis obesa, "Anachis (Costoanachis) avara" = Costoanachis avara
"Anachis (Costoanachis) obesa" = Parvanachis obesa Adams 1845 snail
"Anachis (Costoanachis) avara" = Costoanachis avara Say 1822 snail
 Neogastropoda - Nassariidae
 Neogastropoda - Drilliidae
"Drillia patagonica" = Spirotropis patagonica
"Drillia patagonica" = Spirotropis patagonica d'Orbigny 1841 snail
 Neogastropoda - Terebridae
"Terebra (Strioterebrum) "sp. A"" = Strioterebrum, Hastula cinerea
"Terebra (Strioterebrum) "sp. A"" = Strioterebrum Sacco 1891 auger snail
Hastula cinerea Born 1778 auger snail
 Calyptraeoidea - 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
 Truncatelloidea - Hydrobiidae
"Littoridina australis" = Heleobia australis
"Littoridina australis" = Heleobia australis d'Orbigny 1837 snail
 Sorbeoconcha - Planaxidae
 Sorbeoconcha - Scaliolidae
"Alabina cerithidioides" = Finella dubia
"Alabina cerithidioides" = Finella dubia d'Orbigny 1840 snail
[entered as Alabina cerithioides]
 Pyramidelloidea - Pyramidellidae
"Odostomia (Chrysallida) seminuda" = Boonea seminuda, Turbonilla cf. atypha
"Odostomia (Chrysallida) seminuda" = Boonea seminuda Adams 1839 snail
 Trochoidea - Trochidae
Halistylus columna Dall 1890 top snail
 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