Bajada del Agrio (Cretaceous to of Argentina)

Where: Neuquén, Argentina (38.4° S, 70.0° W: paleocoordinates 38.4° S, 35.2° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Huitrin-Rayoso Group, Late/Upper Barremian to Late/Upper Barremian (130.0 - 122.5 Ma)

Environment/lithology: terrestrial; lithified, gray, blue, argillaceous mudstone

Size class: microfossils

• Others = Palynomorphs

Preservation: soft parts, original sporopollenin

Collected by Laboratorio de Bioestratigrafía de la Universidad Nacional de la Patagonia San Juan Bosco

Collection methods: bulk, chemical, hydrochloric, hydroflouric,

• Laboratorio de Bioestratigrafía de la Universidad Nacional de la Patagonia San Juan Bosco: Repository.

Primary reference: P. Vallati. 2006. Las primeras angiospermas en el Cretácico de la Cuenca Neuquina (Centro Oeste de Argentina): Aspectos geológicos relacionados. Revista Brasileira de Paleontologia 9(1):83-92 [C. Jaramillo/P. Santamarina]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 149818: authorized by Carlos Jaramillo, entered by Patricio Santamarina on 27.08.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Asteropollis
  -
Asteropollis transitorius Vallati 2006
nov. comb.
Asteropollis asteroides
  -
Asteropollis asteroides Hedlund and Norris 1968
Pinopsida
 Pinales - Araucariaceae
Cyclusphaera psilata Volkheimer and Sepulveda 1976
 Pinales - Cheirolepidiaceae
Gymnospermopsida
  -
Singhia montanaensis Lima 1980
Subzone of Klukisporites foveolatus
Retimonocolpites
  -
Afropollis zonatus
  -
Afropollis zonatus Doyle et al. 1982
Zone of Afropollis zonatus
Afropollis operculatus
  -
Afropollis operculatus Doyle et al. 1982
Zone of Afropollis zonatus
Afropollis jardinus
  -
Afropollis aff. jardinus Doyle et al. 1982
Zone of Afropollis zonatus
Monocotyledoneae
 Liliales - Liliidae
Cycadopsida
 Gnetales -
Equisetosporites cf. albertensis Singh 1964 cycads
Subzone of Klukisporites foveolatus
Pilosisporites trichopapillosus
  -
Pilosisporites trichopapillosus Delcourt and Sprumont 1955
Pteridopsida
 Schizaeales -
Appendicisporites tricornitatus Weyland and Greifeld 1953
 Schizaeales - Schizaeaceae
Klukisporites foveolatus Pocock 1965
Subzone of Klukisporites foveolatus
Lycopsida
  -
Bryopsida
  -
Triporoletes reticulatus Playford 1971
Subzone of Klukisporites foveolatus
Magnoliopsida
 Magnoliales - Chloranthaceae
 Gymnospermophyta -
Gnetaceaepollenites "sp." Thiergart 1938
Subzone of Klukisporites foveolatus
Gnetaceaepollenites barghoornii Lima 1980
Subzone of Klukisporites foveolatus
Balmeiopsis limbatus
  -
Balmeiopsis limbatus Archangelsky 1977