Arroyo de los Mineros: Middle Eocene, Argentina
collected by F. Versoorst 1971

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Serjania sp. microspore
Nyctaginacea indet. microspore
Equisetopsida - Araucariaceae
Araucaria sp. microspore de Jussieu 1789
Ginkgoopsida - Ephedrales - Ephedraceae
Ephedra sp. microspore Linnaeus 1753
Angiospermae - Myrtales - Onagraceae
Fuchsia sp. microspore Linnaeus 1753
Angiospermae - Myrtales - Myrtaceae
Myrceugenia sp. microspore Berg 1855
Angiospermae - Malvales - Sterculiaceae
Sterculiaceae indet. microspore Ventenat 1807
Angiospermae - Malvales - Bombacaceae
Bombax sp. microspore Linnaeus 1753
Angiospermae - Sapindales - Sapindaceae
Cupania sp. microspore Linnaeus
Angiospermae - Fabales - Fabaceae
Cassia sp. microspore Linnaeus 1753
Margocolporites sp. microspore Ramanajuan 1966
Angiospermae - Rosales - Rosaceae
Rosaceae informal indet. 1 microspore Jussieu 1789
Rosaceae informal indet. 2 microspore Jussieu 1789
? Rosaceae informal indet. 3 microspore Jussieu 1789
Rubus sp. microspore Linnaeus 1753
Acaena sp. microspore Mutis and Linneaus 1771
Polylepisl? Acaena
Angiospermae - Malpighiales - Euphorbiaceae
Euphorbiaceae informal indet. 1 microspore Jussieu 1789
Euphorbiaceae informal indet. 2 microspore Jussieu 1789
Angiospermae - Fagales
Nothofagidites suggatei microspore Couper 1953
Nothofagidites fortispinulosus microspore Menendez and Caccavari 1975
N. fortispinulosus tipo 1 y 2
Angiospermae - Gunnerales - Gunneraceae
Gunnera sp. microspore Linnaeus
Angiospermae - Proteales - Proteaceae
Proteacidites informal sp. 1 microspore Cookson and Couper 1953
Proteacidites informal sp. 2 microspore Cookson and Couper 1953
Proteacidites informal sp. 3 microspore Cookson and Couper 1953
Proteacidites informal sp. 4 microspore Cookson and Couper 1953
Angiospermae - Saxifragales - Haloragaceae
Myriophyllum sp. microspore Linnaeus 1753
Angiospermae - Apiales - Apiaceae
Apiaceae informal indet. 1 microspore Lindley 1836
Apiaceae informal indet. 2 microspore Lindley 1836
Apiaceae informal indet. 3 microspore Lindley 1836
Angiospermae - Asterales - Asteraceae
Asteraceae informal sp. 1 microspore Berchtold and Presl 1820
Asteraceae informal sp. 2 microspore Berchtold and Presl 1820
Asteraceae informal sp. 3 microspore Berchtold and Presl 1820
Magnoliopsida
Malvacipollis informal sp. 1 microspore Harris 1965
Malvacipollis informal sp. 2 microspore Harris 1965
Malvacipollis informal sp. 3 microspore Harris 1965
Coniferales - Podocarpaceae
Podocarpidites marwickii microspore Couper 1953
Phyllocladidites mawsonii microspore Cookson 1947
Dacrydiumites florinii microspore Cookson and Pike 1953
Lycopodiopsida - Lycopodiales - Lycopodiaceae
Lycopodium sp. microspore Linnaeus 1753
Polypodiopsida - Dicksoniaceae
Lophosoria sp. microspore Presl 1847
Polypodiopsida - Cyatheales - Cyatheaceae
Cnemidaria sp. microspore Presl 1836
synonym of Cyathea
Pteridopsida
Ischyosporites sp. microspore Balme 1957
unclassified
Reboulisporites fuegiensis microspore Zamaloa and Romero 1990
see common names

Geography
Country:Argentina State/province:Tierra del Fuego
Coordinates: 52.9° South, 68.4° West (view map)
Paleocoordinates:55.3° South, 58.3° West
Basis of coordinate:estimated from map
Geographic resolution:local area
Time
Period:Paleogene Epoch:Eocene
10 m.y. bin:Cenozoic 2-3
Key time interval:Middle Eocene
Age range of interval:47.80000 - 37.71000 m.y. ago
Stratigraphy
Formation:Cullen
Stratigraphic resolution:formation
Stratigraphy comments: The today status of scientific knowledge of dinoflagellates together with the pollen and spore assemblage indicate a stratigraphic range from Lower to Middle Eocene.
Lithology and environment
Primary lithology: lithified silty,sandy sandstone
Lithology description: The Cullen Formation consists of a sucession of sandy silts and sands with silty intercalations.
Environment:estuary/bay
Geology comments: The Cullen Formation is interpreted as an estuarine-deltaic sequence associated with volcanic activity
Taphonomy
Modes of preservation:soft parts,original sporopollenin
Size of fossils:microfossils
Collection methods and comments
Collection methods:chemical,hydrochloric,hydroflouric
Collection size:90 specimens
Reason for describing collection:paleoecologic analysis
Collectors:F. Versoorst Collection dates:1971
Collection method comments: The stubs of the palynological preparation are housed at the Pb-Palino, Tucumán, Argentina.
Taxonomic list comments:The palynomorph content is characterized by approximately one third dinoflagellate cysts and two thirds pollen and spores. In the latter, the sum of spores make up 24%, the gymnosperm pol- len 28%, and angiosperm pollen 48%,
Metadata
Database number:169358
Authorizer:C. Jaramillo Enterer:C. Jaramillo
Research group:micropaleontology
Created:2015-05-20 19:51:22 Last modified:2015-05-20 19:51:22
Access level:the public Released:2015-05-20 19:51:22
Creative Commons license:CC BY
Reference information

Primary reference:
55273.fossil record R. Zetter, C. C. Hofmann, I. Draxler, J. Durango Cabrera, M. M. Vergel and F. Vervoorst. 1999. A rich Middle Eocene microflora at Arroyo de los Mineros, near Cañadón Beta, NE Tierra del Fuego Province, Argentina. Abhandlungen der Geologischen Bundesanstalt (56)436-460 [C. Jaramillo/C. Jaramillo/M. Uhen]