Perfil Qubrada Don Nielsen (Cretaceous of Argentina)

Where: Santa Cruz, Argentina (49.5° S, 71.5° W: paleocoordinates 53.7° S, 41.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Piedra Clavada Formation, Early/Lower Albian (112.0 - 109.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: deltaic; lithified, black, muddy shale and lithified, yellow, sandy sandstone

• En general resulta muy claro que las trazas fósiles y los invertebrados son escencialmente marinos lo cual sugiere en conjunto con sus facies sedimentarias, una zona deltaica sumergida en facies de prodelta, frente deltaico, bahías interdistributarias y canales interdistributarios, y facies de shoreface-playa.
• La Formación Piedra Clavada está conformada por areniscas amarillentas, pelitas gris oscuras, facies heterolíticas y escasos conglomerados y coquinas.

Size class: microfossils

• Other: palynomorphs

Preservation: soft parts, original sporopollenin

Reposited in the MACN

Collection methods: bulk, chemical, hydrochloric, hydroflouric,

Primary reference: A. Archangelsky, S. Archangelsky, D. G. Poire and N. D. Canessa. 2008. Aptian Angiosperm Pollen from the Ticó Flora Patagonia, Argentina. Revista del Museo Argentino de Ciencias Naturales 10(2):185-198 [C. Jaramillo/P. Santamarina]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 149846: authorized by Carlos Jaramillo, entered by Patricio Santamarina on 28.08.2013, edited by Elena Stiles

Creative Commons license: CC BY (attribution)

Taxonomic list

Ostracoda
 Palaeocopida -
Circulina "sp." Sepkoski 2002 ostracod
Schizosporis
  -
Schizosporis "sp." Cookson and Dettmann 1959
Chlorophyceae
  -
Botryococcus "sp." Kutzing 1849
Pediastrum "sp." Meyen 1829
Schrankipollis
  -
Schrankipollis "sp." Doyle et al. 1990
Schrankipollis cf. kachaikensis Barreda and Archangelsky 2006
Tricolporoidites
  -
Tricolporoidites "sp." Pacltova 1971
Liliopsida
 Alismatales - Alismatidae
Pennipollis peroreticulatus Friis et al. 2000
Fraxinoipollenites
  -
Asteropollis
  -
Asteropollis "sp." Hedlund and Norris 1968
Pinopsida
 Pinales - Podocarpaceae
 Pinales - Araucariaceae
Cyclusphaera radiata Archangelsky 1983
 Pinales - Cheirolepidiaceae
Classopollis "sp." Pflug 1953
 Pinales -
Callialasporites trilobatus Dev 1961
f. dampieri - f. trilobatus
Ginkgoopsida
 Ephedrales - Ephedraceae
Ephedripites "sp." Bolkhovitina and Potonié 1958 jointfir
Retimonocolpites
  -
Afropollis
  -
Afropollis "sp." Doyle et al. 1982
Monocotyledoneae
 Liliales - Liliidae
Liliacidites "sp." Couper 1953
Murospora
  -
Murospora "sp." Somers 1952
Pteridopsida
  -
Trilites "sp." Erdtman and Couper 1947
Matonisporites "sp." Couper 1958
 Salviniales - Marsileaceae
 Schizaeales -
Appendicisporites "spp." Weyland and Greifeld 1953
Ruffordiaspora "sp. A" Dettmann and Clifford 1992
Ruffordiaspora ticoensis Archangelsky et al. 2008
Ruffordiaspora australiensis Dettmann and Clifford 1992
 Schizaeales - Schizaeaceae
 Gleicheniales - Matoniaceae
 Gleicheniales - Gleicheniaceae
Gleicheniidites "sp." Dettmann 1963
  -
Baculatisporites "sp." Thomson and Pflug 1953
Lycopsida
  -
  - Selaginellaceae
Densoisporites corrugatus Archangelsky and Gamerro 1965
Neoraistrickia "sp." Potonié 1956
Antulsporites "sp." Archangelsky and Gamerro 1966
Ceratosporites equalis Cookson and Dettmann 1958
  - Lycopodiaceae
Retitriletes "sp." Pierce 1961
Retitriletes boqueroense Archangelsky and Villar de Seoane 1998
Taurocusporites
  -
Taurocusporites segmentatus
  -
Cingutriletes
  -
Cingutriletes "sp." Pierce 1961
Staplinisporites caminus
  -
Foraminisporis
  -
Bryopsida
  -
Interulobites
  -
Interulobites "sp." Phillips 1971
Interulobites triangularis
  -
Interulobites triangularis Paden et al. 1971
Couperisporites
  -
Couperisporites lilianae Archangelsky et al. 2008
Magnoliopsida
 Magnoliales - Chloranthaceae
  -
Rousea "sp." Srivastava 1969
Echimonocolpites "sp." der Hammen and de Mutis 1965
Tricolpites "sp." Potonié 1960
Carpolithus
  -
Carpolithus sp. Linnaeus 1768
Asterisporites chlonovae
  -
Asterisporites chlonovae Venkatachala and Rawat 1971
Balmeiopsis limbatus
  -
Balmeiopsis limbatus Archangelsky 1977