Igarape Marciano (Miocene of Brazil)

Where: Maranhao, Brazil (2.6° S, 43.4° W: paleocoordinates 2.4° S, 39.2° W)

• coordinate stated in text

When: Pirabas Formation, Early/Lower Miocene (23.0 - 16.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: coastal; lithology not reported

Size class: macrofossils

Primary reference: V. Araujo Tavora, A. A. R. dos Santos, and R. N. Araujo. 2010. Localidades fossiliferas da Formacao Pirabas (Mioceno Inferior). Boletim do Museu Paraense Emílio Goeldi Ciências Naturais, Belém 5(2):207-224 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 112596: authorized by Mark Uhen, entered by Mark Uhen on 13.07.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Malacostraca
 Decapoda - Calappidae
"Calappa circularis" = Calappilia circularis
"Calappa circularis" = Calappilia circularis Beurlen 1958 box crab
 Decapoda - Cancridae
Cyclocancer tuberculatus
Cyclocancer tuberculatus Lima et al. 2023 crab
Gastropoda
 Lepetellida - Fissurellidae
Diodora immortalis
Diodora immortalis Maury 1924 snail
 Trochoidea - Trochidae
Calliostoma derbyi
Calliostoma derbyi Maury 1924 top snail
 Heterostropha - Architectonicidae
Architectonica nobilis
Architectonica nobilis Röding 1798 sundial
 Cerithioidea - Turritellidae
Turritella agronomica, Turritella pirabica
Turritella pirabica turret shell
 Sorbeoconcha - Naticidae
Sinum cf. gabbi
Sinum cf. gabbi Brown and Pilsbry 1913 moon snail
 Sorbeoconcha - Vermetidae
"Petaloconchus (Macrophragma) subvarians" = Macrophragma
"Petaloconchus (Macrophragma) subvarians" = Macrophragma worm shell
 Neogastropoda - Conidae
Conus restitutus, Conus whitei
Conus restitutus cone shell
Conus whitei cone shell
 Sorbeoconcha - Cypraeidae
"Siphocypraea (Muracypraea) pennai" = Siphocypraea pennai
"Siphocypraea (Muracypraea) pennai" = Siphocypraea pennai White 1887 cowry
 Sorbeoconcha - Thersiteidae
Orthaulax pugnax
Orthaulax pugnax Heilprin 1887 snail
Bivalvia
 Arcida - Arcidae
"Arca (Arca) imbricata" = Lamarcka imbricata, Anadara (Anadara) brasiliana
"Arca (Arca) imbricata" = Lamarcka imbricata Bruguière 1789 clam
 Arcida - Glycymerididae
Glycymeris bineminis
 Ostreida - Pteriidae
Pteria serini
Pteria serini pearl oyster
 Pectinida - Pectinoidae
"Chlamys (Argopecten) capanemensis" = Argopecten, "Chlamys (Argopecten) gibbus" = Argopecten gibbus, Chlamys (Argopecten) glendonensis, "Chlamys (Chlamys) sentis" = Caribachlamys sentis
"Chlamys (Argopecten) capanemensis" = Argopecten calico scallop
"Chlamys (Argopecten) gibbus" = Argopecten gibbus Linnaeus 1758 calico scallop
Chlamys (Argopecten) glendonensis Mansfield 1940 scallop
"Chlamys (Chlamys) sentis" = Caribachlamys sentis Reeve 1853 scallop
 Pectinida - Plicatulidae
Plicatula eroessa
 Carditida - Carditidae
Cardita (Carditamera) manteia, Venericardia agriculturae
 Pholadida - Corbulidae
Corbula (Caryocorbula) querida
 Cardiida - Chamidae
Chama cf. agronomica
 Cardiida - Veneridae
"Dosinia concentrica" = Dosinia (Dosinia) concentrica, Chione (Lirophora) agraria, Chione paraensis, "Ventricolaria thalestris" = Globivenus, Pitar (Lamelliconcha) perarcana
"Dosinia concentrica" = Dosinia (Dosinia) concentrica Born 1778 venus clam
Chione (Lirophora) agraria White 1887 venus clam
Chione paraensis White 1887 venus clam
"Ventricolaria thalestris" = Globivenus venus clam
 Lucinida - Lucinidae
Linga glomeramen, Lucina pectinata
Linga glomeramen Maury 1924 clam
Gymnolaemata
 Cheilostomata - Lunulitidae
Lunulites pileolus
 Cheilostomata - Steginoporellidae
Steginoporella pirabensis