Urumaco Formation (Miocene of Venezuela)

Where: Venezuela (11.2° N, 70.3° W: paleocoordinates 11.0° N, 68.8° W)

• coordinate based on nearby landmark

• basin-level geographic resolution

When: Urumaco Formation, Late/Upper Miocene (11.6 - 5.3 Ma)

• STRATIGRAPHIC RELATIONS: From Urumaco Formation. AGE: Correlations indicate Middle Miocene-Early Pliocene in text; suggested to be Late Miocene according to Gamero (1997); placed by enterer in late Miocene on the basis of faunal composition . STRATIGRAPHIC POSITION: General list for formation.

• formation-level stratigraphic resolution

Environment/lithology: coastal; unlithified siliciclastic sediments

• ENVIRONMENT: Shallow marine siliciclastic.
• SPECIFIC LITHOLOGY: Not stated, but obviously siliciclastic. LITHIFICATION: Unlithified, based on figured specimens.

Size class: macrofossils

Preservation: original aragonite

Collection methods: surface (float),

• COLLECTOR: Multiple collectors. REPOSITORY: UNEFM, Venezuela.

Primary reference: O. A. Aguilera. 2004. Tesoros Paleontol├│gicos de Venezuela 1-148 [A. Hendy/A. Hendy/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 92751: authorized by Austin Hendy, entered by Austin Hendy on 27.11.2009, edited by Mark Uhen, Catalina Pimiento, Evangelos Vlachos and Miranta Kouvari

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to characteristic taxa figured or stated in text. NOMENCLATURE: Not and authoritative publication with generally modern nomenclature and species-resolution identifications.
unclassified
  -
Bivalvia
 Arcida - Arcidae
"Anadara chemnitzi" = Anadara (Cunearca) chemnitzii, Anadara zorritoensis, "Anadara brasiliana" = Anadara (Cunearca) brasiliana, "Anadara inutilis" = Anadara (Cunearca) inutilis, "Anadara cf. lienosa" = Anadara (Rasia) lienosa
"Anadara chemnitzi" = Anadara (Cunearca) chemnitzii Philippi 1851 ark
Anadara zorritoensis Spieker 1922 ark
"Anadara brasiliana" = Anadara (Cunearca) brasiliana Lamarck 1819 ark
"Anadara inutilis" = Anadara (Cunearca) inutilis Jung 1965 ark
"Anadara cf. lienosa" = Anadara (Rasia) lienosa Say 1832 ark
 Arcida - Glycymerididae
"Glycymeris pectinata" = Tucetona pectinata
"Glycymeris pectinata" = Tucetona pectinata Gmelin 1791 clam
 Pectinida - Pectinoidae
"Lyropecten antillarum" = Antillipecten antillarum R├ęcluz 1853 scallop
Argopecten nucleus calico scallop
Argopecten irradians Lamarck 1819 calico scallop
 Pectinida - Plicatulidae
Plicatula gibbosa Lamarck 1801 scallop
MISSPELT: Plicatula gibosa
 Ostreida - Ostreidae
Crassostrea sp. Sacco 1897 oyster
Ostrea sp. Linnaeus 1758 oyster
 Pholadida - Corbulidae
"Corbula contracta" = Caryocorbula contracta, "Corbula caribaea" = Caryocorbula caribaea, Corbula operculata
"Corbula contracta" = Caryocorbula contracta Say 1822 clam
"Corbula caribaea" = Caryocorbula caribaea d'Orbigny 1845 clam
 Cardiida - Chamidae
"Echinochama cf. cornuta" = Arcinella cornuta
"Echinochama cf. cornuta" = Arcinella cornuta Conrad 1866 jewel box
 Cardiida - Mactridae
 Cardiida - Tellinidae
Tellina radiata Linnaeus 1758 tellin clam
 Cardiida - Cardiidae
"Trigoniocardia antillarum" = Trigoniocardia (Apiocardia) antillarum d'Orbigny 1853 cockle
 Solenida - Solenidae
Solen sp. Linnaeus 1758 clam
 Poromyida - Verticordiidae
 Poromyida - Cuspidariidae
 Lucinida - Lucinidae
"Codakia cf. orbiculata" = Ctena orbiculata
"Codakia cf. orbiculata" = Ctena orbiculata Montagu 1808 clam
Gastropoda
 Neogastropoda - Olividae
Oliva reticularis Lamarck 1811 olive snail
Oliva cylindrica Sowerby 1850 olive snail
MISSPELT: Oliva cilindrica
 Neogastropoda - Buccinidae
Antillophos sp. Woodring 1928 true whelk
 Neogastropoda - Nassariidae
Nassarius antillarum d'Orbigny 1847 snail
 Neogastropoda - Cancellariidae
 Neogastropoda - Cystiscidae
Persicula venezolana snail
Spelling?; SUBSPECIES: Persicula venezolana lavellana
 Neogastropoda - Marginellidae
Prunum cf. prunum Gmelin 1791 margin shell
 Neogastropoda - Muricidae
Eupleura cf. caudata Say 1822 murex snail
 Neogastropoda - Turridae
 Neogastropoda - Horaiclavidae
Buchema sp. Corea 1934 snail
 Neogastropoda - Conidae
Conus cf. kevani cone shell
Conus cf. bayeri cone shell
 Vanikoroidea - Eulimidae
Niso sp. Risso 1826 snail
 Naticoidea - Naticidae
Stigmaulax cf. sulcata Born 1778 moon snail
Polinices lacteus Guilding 1834 moon snail
 Cypraeoidea - Cypraeidae
"Siphocypraea donmoorei" = Muracypraea donmoorei6
"Siphocypraea donmoorei" = Muracypraea donmoorei6 Petuch 1979 cowry
 Sorbeoconcha - Turritellidae
Turritella abrupta Spieker 1922 turret shell
 Architectonicoidea - Architectonicidae
Gymnolaemata
 Cheilostomata -
Petaloconchus varians d'Orbigny 1839
Chondrichthyes
 Myliobatiformes - Dasyatidae
Dasyatis sp.1 Rafinesque 1810 whiptail stingray
 Myliobatiformes - Rhinopteridae
Rhinoptera sp.1 Cuvier 1829 cownose ray
 Pristiformes - Pristidae
 Lamniformes - Otodontidae
"Carcharodon megalodon" = Otodus megalodon1
"Carcharodon megalodon" = Otodus megalodon1 Agassiz 1843 megalodon
 Carchariniformes - Carcharhinidae
"Galeocerdo cuvier" = Galeocerdo cuvieri1, Carcharhinus sp.1
"Galeocerdo cuvier" = Galeocerdo cuvieri1 Peron and LeSueur 1822 tiger shark
Carcharhinus sp.1 de Blainville 1816 requiem shark
 Carchariniformes - Sphyrnidae
Sphyrna sp.1 Rafinesque 1810 hammerhead shark
 Carchariniformes - Hemigaleidae
Hemipristis serra1 Agassiz 1843 ground shark
Actinopteri
 Perciformes - Serranidae
Epinephelus itajara1 Lichtenstein 1822 perch-like fish
 Perciformes -
Nebris sp.1 Cuvier and Valenciennes 1830 perch-like fish
 Acanthomorphata - Haemulidae
Haemulon sp.1 Cuvier 1829
 Acanthomorphata - Sciaenidae
Cynoscion sp.1 Gill 1861
Equetus sp.1 Rafinesque 1815
Larimus sp.1 Cuvier and Valenciennes 1830
Larimus henrii1 Nolf and Aguilera 1998
 Siluriformes - Ariidae
Arius couma1 Ariid catfish
Arius dowii1 Ariid catfish
Arius herzbergii1 Ariid catfish
Arius kessleri1 Ariid catfish
Arius quadriscutis1 Ariid catfish
Arius rugispinis1 Ariid catfish
Bagre marinus1 Ariid catfish
Reptilia
 Testudines - Trionychidae
Trionychidae indet.7 Gray 1825 softshell turtle
Musco de Cicncias Naturales, Caracas, no. 238; hypoplastron. Pleurodira indet. according to 64451 (Chelidae or Araripemyidae). But Trionychidae indet. according to 63467
 Testudines - Podocnemidae
Bairdemys venezuelensis1 Wood and Diaz 1971 sideneck turtle
Mammalia
 Sirenia - Trichechidae
Ribodon sp.5 Ameghino 1883 manatee
 Notoungulata - Toxodontidae
Toxodontidae indet. Ameghino 1889 notoungulate
 Rodentia - Neoepiblemidae
cf. Phoberomys sp.4 Kraglievich 1926 caviomorph
CIAAP 441-442. In: El Hatillo (c) - Collected by Jean Bocquentin-Villanueva in July 1980
 Xenarthra - Megatheriidae
Urumaquia robusta2 Carlini et al. 2006 edentate
AMU-CURS 169, 176, 179. Urumaco, Estado Falc6n, Venezuela; Urumaco Formation, Late Miocene (MINISTERIO DE ENERG1A Y MINAS 1997;
 Odontoceti - Iniidae
Saurocetes sp.5 Burmeister 1871 toothed whale
Ischyrorhynchus sp.3 Ameghino 1891 toothed whale