PBDB Collection

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 or Rayoso Formation (Bajada del Agrio Group), Late/Upper Barremian to Late/Upper Barremian (130.0 - 122.5 Ma)

• PJW: Was Huitrin-Rayoso group.

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

Show authors, comments, and common names

Gymnospermopsida
-	Singhia montanaensis Singhia montanaensis Lima 1980 Subzone of Klukisporites foveolatus
Asteropollis asteroides
-	Asteropollis asteroides Asteropollis asteroides Hedlund and Norris 1968
Asteropollis
-	Asteropollis transitorius Asteropollis transitorius Vallati 2006 nov. comb.
Equisetopsida
Pinidae - Pinidae	Classopollis classoides, Balmeiopsis limbatus, Cyclusphaera psilata Classopollis classoides Pflug 1953 Balmeiopsis limbatus Balme 1957 Cyclusphaera psilata Volkheimer and Sepulveda 1976
Angiospermae
-	Afropollis aff. jardinus, Afropollis operculatus, Afropollis zonatus, Retimonocolpites "sp." Afropollis aff. jardinus Doyle et al. 1982 Zone of Afropollis zonatus Afropollis operculatus Doyle et al. 1982 Zone of Afropollis zonatus Afropollis zonatus Doyle et al. 1982 Zone of Afropollis zonatus Retimonocolpites "sp." Pierce 1961
Chloranthales - Chloranthaceae	Clavatipollenites hughesii Clavatipollenites hughesii Kemp 1968
Mesangiosperms - Liliaceae	? Liliacidites "sp." ? Liliacidites "sp." Couper 1953
Gnetaceaepollenites
-	Gnetaceaepollenites "sp.", Gnetaceaepollenites barghoornii Gnetaceaepollenites "sp." Thiergart 1938 Subzone of Klukisporites foveolatus Gnetaceaepollenites barghoornii Lima 1980 Subzone of Klukisporites foveolatus
Marchantiopsida
- Marchantiidae	Triporoletes reticulatus Triporoletes reticulatus Playford 1971 Subzone of Klukisporites foveolatus
Pilosisporites trichopapillosus
-	Pilosisporites trichopapillosus Pilosisporites trichopapillosus Delcourt and Sprumont 1955
Polypodiopsida
- Blechnaceae	Leptolepidites macroverrucosus, Leptolepidites irregularis Leptolepidites macroverrucosus Schultz 1967 Leptolepidites irregularis Wingate 1980
Schizaeales - Polypodiidae	Appendicisporites tricornitatus, Klukisporites foveolatus Appendicisporites tricornitatus Weyland and Greifeld 1953 Klukisporites foveolatus Pocock 1965 Subzone of Klukisporites foveolatus
Ginkgoopsida
Ephedrales -	Equisetosporites cf. albertensis Equisetosporites cf. albertensis Singh 1964 Subzone of Klukisporites foveolatus

Life -	? Membranosphaera "sp." ? Membranosphaera "sp." Samoilovitch 1961 acritarchs