6224: Aptian, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Foramisnisporis dailyi
Viretrisporites signatus
Jusinghipollis ticoensis
Retirotundia pseudoreticulata
Lycopodiopsida - Selaginellales
Ceratosporites equalis Cookson and Dettmann 1958
Densoisporites patagonicus n. sp.
Lycopodiopsida - Lycopodiales
Retitriletes douglasii Dettmann 1986
Lycopodiopsida - Lycopodiales - Lycopodiaceae
Obtusisporis convexus
Obtusisporis concavus Pocock 1970
Obtusisporis obtusangulus Pocock 1970
Angiospermae - Chloranthales - Chloranthaceae
Clavatipollenites sp. Couper 1958
Clavatipollenites sp. 2 in Archangelsky and Archangeslky 2013
Coniferales - Podocarpaceae
Gamerroites sp. Archangelsky 1988
Gamerroites sp. cf. G. psilasaccus
Gamerroites volkheimeri Archangelsky 1988
Callialasporites trilobatus (Balme 1957)
original and current combination Tsugaepollenites trilobatus
Podocarpidites granulatus
Podocarpidites vestidus
Podocarpidites parviauriculatus Archangelsky and Villar de Seoane 2005
Podocarpidites herbstii Burger 1966
Podocarpidites radiatus Brenner 1963
Podocarpidites marwickii Couper 1953
Podocarpidites ellipticus Cookson 1947
Podocarpidites microreticuloidatus (Cookson 1947)
original and current combination Podocarpidites microreticuloidata
Microcachrydites cesariae
unclassified
Lethomasites sp. Ward 1989
Lethomasites sp. in Llorens and Perez Loinaze 2015
Equisetopsida
Foraminisporis asymmetricus Dettmann 1963
Equisetopsida - Cheirolepidiaceae
Classopollis triangulatus
Classopollis classoides Pflug 1953
Classopollis simplex Reiser and Williams 1969
Equisetopsida - Araucariaceae
Balmeiopsis limbatus (Balme 1957)
original and current combination Inaperturopollenites limbatus
Cyclusphaera patagonica
Cyclusphaera annularis n. sp.
Cyclusphaera punnulosa
Cyclusphaera radiata Archangelsky 1983
Cyclusphaera psilata Volkheimer and Sepulveda 1976
unclassified
Cycadopites grossus n. sp.
Concavissimisporites crassatus Delcourt et al. 1963
Concavissimisporites punctatus Pocock 1964
Staplinisporites mathurii Filatoff 1975
Marchantiopsida - Marchantiidae
Stoverisporites lunaris Norvick and Burger 1975
Marchantiopsida - Sphaerocarpales
Aequitriradites verrucosus (Cookson and Dettmann 1958)
original and current combination Cirratriradites verrucosus
Aequitriradites spinulosus (Cookson and Dettmann 1958)
original and current combination Cirratriradites spinulosus
Polypodiopsida - Gleicheniales - Matoniaceae
Dictyophyllidites sp. Couper 1958
Polypodiopsida - Schizaeales
Ruffordiaspora australiensis Dettmann and Clifford 1992
Appendicisporites unicus Markova 1961
Polypodiopsida - Schizaeales - Schizaeaceae
Cicatricosisporites hughesii Dettmann 1963
Cicatricosisporites annulatus Archangelsky and Gamerro 1966
Polypodiopsida
Biretisporites sp. Delcourt et al. 1963
Biretisporites sp. cf. B. potoniaei
Polypodiopsida - Marsileaceae
Crybelosporites pannosus n. sp.
Polypodiopsida - Polypodiaceae
Trichotomosulcites microsaccatus Schrank 2010
Laevigatosporites ovatus Wilson and Webster 1946
Polypodiopsida - Gleicheniaceae
Clavifera sp. Bolchovitina 1966
Clavifera sp. cf. C. triplex
Gleicheniidites senonicus Ross 1949
Gleicheniidites aptianus Llorens 2008
Polypodiopsida - Osmundaceae
Baculatisporites comaumensis Potonie 1953
Polypodiopsida - Dicksoniaceae
Cibotiidites auriculatus Archangelsky and Villar de Seoane 1998
Cyatheacidites tectifera Archangelsky and Gamerro 1965
unclassified
Microfoveolatosporis sp. Krutzsch 1959
Pteridopsida
Capsispora vulcanica Llorens 2008
Osmundacidites diazii
Cyathidites minor Couper 1953
Cyathidites australis Couper 1953
Cyathidites rafaeli Burger 1980
unclassified
Cibotiumspora juncta Zhang 1978
see common names

Geography
Country:Argentina State/province:Santa Cruz County:Anfiteatro de Ticó
Coordinates: 48.5° South, 69.2° West (view map)
Paleocoordinates:49.4° South, 35.4° West
Time
Period:Cretaceous Epoch:Early/Lower Cretaceous
Stage:Aptian 10 m.y. bin:Cretaceous 3
Key time interval:Aptian
Age range of interval:121.40000 - 113.00000 m.y. ago
Age estimate:118.56 ± 1.4 Ma (U/Pb)
Stratigraphy
Geological group:Baqueró Formation:Anfiteatro de Ticó
Local section:BA Pal 6224 Local bed:26.5 m
Local order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: The collection is 29.5 m below the dated horizon.
Lithology and environment
Primary lithology: lithified silty "shale"
Includes fossils?Y
Environment:fluvial-lacustrine indet. Tectonic setting:volcanic basin
Geology comments: Deep lacustrine (Facies Association A of Limarino et al., 2012)
Taphonomy
Modes of preservation:soft parts,original sporopollenin
Size of fossils:microfossils
Preservation of anatomical detail:excellent
Temporal resolution:time-averaged
Spatial resolution:autochthonous
Collection methods and comments
Collection methods:bulk,chemical,hydrochloric,hydroflouric,field collection
Collection size:63 specimens
Reason for describing collection:biostratigraphic analysis
Museum repositories:MACN
Metadata
Database number:223077
Authorizer:P. Narvaez Enterer:P. Narvaez
Research group:micropaleontology,paleobotany
Created:2021-11-03 14:05:54 Last modified:2021-11-03 14:05:54
Access level:authorizer only Released:2026-11-03 14:05:54
Creative Commons license:CC BY
Reference information

Primary reference:
78456. V.S. Perez Loinaze and M. Llorens. 2018. Palynology of the Baquero Group (upper Aptian), Patagonia Argentina: An integrated study. Cretaceous Research 86:219-237 [P. Narvaez/P. Narvaez/P. Narvaez]