El Mamon 2: Late Miocene, Venezuela

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Actinopteri - Siluriformes - Pimelodidae
MCN.USB 27-85 PB (paratype) (8 measurements)
Mammalia - Rodentia - Dinomyidae
Pascual and Díaz de Gamero 1969
Mammalia - Rodentia - Neoepiblemidae
Mones 1980
Holotype 12-72V-MCZ, CIAAP 1449 - CIAAP 1438
see common names

Geography
Country:Venezuela State/province:Falcón
Coordinates: 11.3° North, 70.2° West (view map)
Paleocoordinates:11.6° North, 67.6° West (Wright 2013)
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period: Neogene Epoch: Miocene
10 m.y. bin: Cenozoic 6
Key time interval: Late Miocene
Age range of interval: 11.63 - 5.333 m.y. ago
Stratigraphy
Formation:Urumaco Member:Upper
Stratigraphic resolution:member
Stratigraphy comments: The geological units from which the specimens were obtained are the middle and upper members of the Urumaco Formation of Venezuela. These units have been recently summarized in the Léxico estratigráfico de Venezuela (1997).
Lithology and environment
Primary lithology:brown,gray claystone
Secondary lithology: sandstone
Includes fossils?Y
Lithology description: The upper member of the Urumaco Formation also comprises gray to brown often limey claystone with thin intercalated and locally conchiferous sandstones. The uppermost layer is referred to as the “capa de tortugas” because of its abundant remains of the turtle Bairdemys Gaffney & Wood. Several localities and levels have concentra- tions of vertebrate fossils. The vertebrate fauna includes marine, estuarine and freshwater fishes, terrestrial, freshwater and marine turtles and crocodilians, and terrestrial and aquatic/semiaquatic mammals (Sánchez-Villagra et al., 2003).
Environment:fluvial-deltaic indet.
Geology comments: The paleoenvironments were tropical near shore marine to low coastal savannas with freshwater rivers.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Metadata
Also known as:Urumaco (Upper member)
Database number:136769
Authorizer:C. Jaramillo Enterer:G. Ballen, J. Carrillo
Created:2012-12-04 10:29:01 Last modified:2025-02-22 15:12:02
Access level:group members Released:2015-12-04 10:29:01
Creative Commons license:CC0
Reference information

Primary reference:
43734. J. G. Lundberg and O. A. Aguilera. 2003. The late Miocene Phractocephalus catfish (Siluriformes: Pimelodidae) from Urumaco, Venezuela: additional specimens and reinterpretation as a distinct species. Neotropical Ichthyology 1(2):97-109 [C. Jaramillo/G. Ballen]

Secondary references:

46991 A. Mones. 1980. Un Neoepiblemidae del Plioceno medio (Formación Urumaco) de Venezuela (Mammalia, Rodentia, Caviomorpha). Ameghiniana 17(3):277-279 [C. Jaramillo/C. Suarez-Gomez]
48224 R. Pascual and M. L. Díaz de Gamero. 1969. Sobre la presencia del genero Eumegamys (Rodentia, Caviomorpha) en la Formacion Urumaco del Estado Falcon (Venezuela). Su significacion cronologica. Asociación Venezolana de Geología, Minas y Petróleo, Boletín Informativo 12:367-388 [C. Jaramillo/J. Carrillo]