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, Miranta Kouvari and Edward Medeiros

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
  -
Actinopteri
 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
 Perciformes - Serranidae
Epinephelus itajara1 Lichtenstein 1822 perch-like fish
 Perciformes -
Nebris sp.1 Cuvier and Valenciennes 1830 perch-like fish
 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 Mitchill 1815 Ariid catfish
Mammalia
 Megatherioidea - 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;
 Cetacea - Iniidae
Saurocetes sp.5 Burmeister 1871 toothed whale
Ischyrorhynchus sp.3 Ameghino 1891 toothed whale
 Rodentia - Neoepiblemidae
cf. Phoberomys sp.4 Kraglievich 1926 caviomorph
CIAAP 441-442. In: El Hatillo (c) - Collected by Jean Bocquentin-Villanueva in July 1980
 Notoungulata - Toxodontidae
Toxodontidae indet. Scott 1873 notoungulate
 Sirenia - Trichechidae
Ribodon sp.5 Ameghino 1883 manatee
Reptilia
 Testudines - Podocnemididae
Bairdemys venezuelensis1 Wood and Diaz 1971 sideneck turtle
 Testudines - Trionychidae
Trionychidae indet.8 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
 Crocodylia - Gavialidae
Gryposuchus croizati7 Riff and Aguilera 2008 crocodilian
UNEFM-CIAAP-1440 (isolated mandible)
Chondrichthyes
 Lamniformes - Otodontidae
"Carcharodon megalodon" = Otodus megalodon1
"Carcharodon megalodon" = Otodus megalodon1 Agassiz 1835 megalodon
 Carcharhiniformes - Sphyrnidae
Sphyrna sp.1 Rafinesque 1810 hammerhead shark
 Carcharhiniformes - Galeocerdidae
Galeocerdo cuvier1 Peron and LeSueur 1822 tiger shark
 Carcharhiniformes - Carcharhinidae
Carcharhinus sp.1 de Blainville 1816 requiem shark
 Carcharhiniformes - Hemigaleidae
Hemipristis serra1 Agassiz 1835 ground shark
 Rhinopristiformes - Pristidae
 Myliobatiformes - Rhinopteridae
Rhinoptera sp.1 Cuvier 1829 cownose ray
 Myliobatiformes - Dasyatidae
Dasyatis sp.1 Rafinesque 1810 whiptail stingray
Gymnolaemata
 Cheilostomata -
Petaloconchus varians d'Orbigny 1839
Gastropoda
 Heterostropha - Architectonicidae
Heliacus bisulcatus d'Orbigny 1842 snail
 Cerithioidea - Turritellidae
Turritella abrupta Spieker 1922 turret shell
 Sorbeoconcha - Naticidae
Stigmaulax cf. sulcata Born 1778 moon snail
Polinices lacteus Guilding 1834 moon snail
 Sorbeoconcha - Cypraeidae
"Siphocypraea donmoorei" = Muracypraea donmoorei6
"Siphocypraea donmoorei" = Muracypraea donmoorei6 Petuch 1979 cowry
 Neogastropoda - Marginellidae
Prunum cf. prunum Gmelin 1791 margin shell
 Neogastropoda - Muricidae
Eupleura cf. caudata Say 1822 murex snail
 Neogastropoda - Cystiscidae
Persicula venezolana snail
Spelling?; SUBSPECIES: Persicula venezolana lavellana
 Neogastropoda - Nassariidae
Nassarius antillarum d'Orbigny 1847 snail
 Neogastropoda - Buccinidae
Antillophos sp. Woodring 1928 true whelk
 Neogastropoda - Olividae
Oliva reticularis Lamarck 1811 olive snail
Oliva cylindrica Sowerby 1850 olive snail
MISSPELT: Oliva cilindrica
 Neogastropoda - Cancellariidae
 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
Bivalvia
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
Crassostrea sp. Sacco 1897 oyster
 Pectinida - Pectinoidae
Argopecten nucleus calico scallop
Argopecten irradians Lamarck 1819 calico scallop
"Lyropecten antillarum" = Antillipecten antillarum R├ęcluz 1853 scallop
 Pectinida - Plicatulidae
Plicatula gibbosa Lamarck 1801 scallop
MISSPELT: Plicatula gibosa
 Arcida - Arcidae
"Anadara chemnitzi" = Arca chemnitzi, "Anadara inutilis" = Anadara (Cunearca) inutilis, "Anadara brasiliana" = Anadara (Cunearca) brasiliana, Anadara zorritoensis, "Anadara cf. lienosa" = Anadara (Rasia) lienosa
"Anadara chemnitzi" = Arca chemnitzi Philippi 1851 ark
"Anadara inutilis" = Anadara (Cunearca) inutilis Jung 1965 ark
"Anadara brasiliana" = Anadara (Cunearca) brasiliana Lamarck 1819 ark
Anadara zorritoensis Spieker 1922 ark
"Anadara cf. lienosa" = Anadara (Rasia) lienosa Say 1832 ark
 Arcida - Glycymerididae
"Glycymeris pectinata" = Tucetona pectinata
"Glycymeris pectinata" = Tucetona pectinata Gmelin 1791 clam
 Poromyida - Verticordiidae
 Poromyida - Cuspidariidae
 Pholadida - Corbulidae
Corbula operculata, "Corbula caribaea" = Caryocorbula caribaea, "Corbula contracta" = Caryocorbula contracta
"Corbula caribaea" = Caryocorbula caribaea d'Orbigny 1845 clam
"Corbula contracta" = Caryocorbula contracta Say 1822 clam
 Cardiida - Mactridae
 Cardiida - Chamidae
"Echinochama cf. cornuta" = Arcinella cornuta
"Echinochama cf. cornuta" = Arcinella cornuta Conrad 1866 jewel box
 Cardiida - Cardiidae
"Trigoniocardia antillarum" = Trigoniocardia (Apiocardia) antillarum d'Orbigny 1853 cockle
 Cardiida - Tellinidae
Tellina radiata Linnaeus 1758 tellin clam
 Solenida - Solenidae
Solen sp. Linnaeus 1758 clam
 Lucinida - Lucinidae
"Codakia cf. orbiculata" = Ctena orbiculata
"Codakia cf. orbiculata" = Ctena orbiculata Montagu 1808 clam