Punta del Barco - Meseta Baqueró (Cretaceous of Argentina)

Where: Santa Cruz, Argentina (48.7° S, 69.1° W: paleocoordinates 49.5° S, 35.3° W)

• coordinate stated in text

When: Punta del Barco Formation (Baqueró Group), Aptian (125.0 - 113.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: fluvial; lithified sandstone and lithified siltstone

• Paleoenvironment is interpreted the existence of rivers and streams with braided design, which were covered by ash product of increasing volcanic activity. Subsequently, we developed a meandering system, low sinuosity and important cyclical, with periodic interruptions ash rain.
• Cladera 2002. This unit consists of volcaniclastic deposits, mainly epiclastic (in basal and middle levels) and pyroclastic (at higher levels), whose holestratotipo is located in the eastern sector of the Plateau Baqueró, where reaches 110 meters of power.

Size class: macrofossils

Preservation: mold/impression, soft parts, original cellulose

Collection methods: chemical, mechanical,

• Museum repositories: Museum Padre Jesús Molina

Primary reference: E. I. Vera. 2010. Estudios anatómicos en paleofloras del Aptiano de Antártida y Patagonia, y su comparación. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales 294 [C. Jaramillo/J. Moreno]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 151296: authorized by Carlos Jaramillo, entered by Jessica Moreno on 26.09.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Equisetopsida
 Pinidae - Pinidae
Araucaria grandifolia, Agathoxylon "sp."
Araucaria grandifolia Del Fueyo and Archangelsky 2002
Agathoxylon "sp." Hartig 1848
sp. nov.
Polypodiopsida
 Gleicheniales - Polypodiidae
Hausmannia papilio
Hausmannia papilio Herbst 1960
  - Gleicheniaceae
Gleicheniaceae "sp.", Gleichenites sanmartini
Gleicheniaceae "sp." Presl
gen. et sp. nov.