Los Mangos 31-2696' 1.5'': Aptian - Albian, Colombia

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Angiosperm sp.
1 specimen
Araucariacidites guianensis
3 specimens
Inaperturapollenites (informal scabratus) informal 50um
20 specimens
1 specimen
Equisetopsida - Cheirolepidiaceae
Classopollis cf. intrareticulatus Volkheimer 1972
12 specimens
Classopollis classoides Pflug 1953
12 specimens
unclassified
Striatriletes sp. Potonié 1956
1 specimen
Cycadopsida - Cycadales
Eucommiidites informal psilatus
2 specimens
Cycadopsida - Gnetales
Steevesipollenites cupuliformis Azema and Boltenhagen 1974
1 specimen
Ginkgoopsida - Ephedrales
Equisetosporites informal medius
1 specimen
unclassified
Echimonoletes spp.
1 specimen
Angiospermae
Afropollis jardinus Doyle et al. 1982
1 specimen
Coniferales - Podocarpaceae
Callialasporites dampieri (Balme 1957)
10 specimens
original and current combination Zonallapollenites dampieri
Lycopodiopsida - Lycopodiales
Retitriletes spp.
1 specimen
Polypodiopsida - Schizaeales - Schizaeaceae
Cicatricosisporites hallei Delcourt and Sprumont 1955
1 specimen
Cicatricosisporites hughesii Dettmann 1963
1 specimen
unclassified
Psilatriletes informal betweentwentyfiveandfifty
10 specimens
Psilatriletes informal twentyfive
39 specimens
see common names

Geography
Country:Colombia State/province:Huila
Coordinates: 2.6° North, 75.5° West (view map)
Paleocoordinates:1.0° South, 45.3° West
Basis of coordinate:stated in text
Time
Period:Cretaceous Epoch:Early/Lower Cretaceous
Key time interval:Aptian - Albian
Age range of interval:121.40000 - 100.50000 m.y. ago
Stratigraphy
Formation:Ocal
Local section:Ocal Local bed:822 m
Local order:top to bottom
Lithology and environment
Primary lithology: lithified "shale"
Secondary lithology:planar lamination,gray lithified sandstone
Lithology description: The overlying Ocal Formation is composed of intercalated shales and sands that accumulated in fluvial channels, coastal and interior floodplains, low energy bays, and distal bay deposits ( Ramon and Fajardo, 2004).
Environment:interdistributary bay
Geology comments: The overlying Ocal Formation is composed of intercalated shales and sands that accumulated in fluvial channels, coastal and interior floodplains, low energy bays, and distal bay deposits ( Ramon and Fajardo, 2004).
Taphonomy
Modes of preservation:soft parts,original sporopollenin
Size of fossils:microfossils
Collection methods and comments
Collection methods:core,hydrochloric,hydroflouric
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:139374
Authorizer:C. Jaramillo Enterer:G. Doria
Research group:paleobotany
Created:2013-02-11 12:28:45 Last modified:2013-02-10 19:28:45
Access level:the public Released:2013-02-11 12:28:45
Creative Commons license:CC BY
Reference information

Primary reference:
44814. P. J. Mejia-Velazquez, D. L. Dilcher, C. A. Jaramillo, L. B. Fortini, and S. R. Manchester. 2012. Palynological composition of a Lower Cretaceous South American tropical sequence: Climatic implications and diversity comparisons with other latitudes. American Journal of Botany 99:1819-1827 [C. Jaramillo/G. Doria/A. Cárdenas]