Springhill- Estancia El Salitral (Cretaceous to of Argentina)

Where: Santa Cruz, Argentina (47.3° S, 71.8° W: paleocoordinates 47.2° S, 35.1° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Springhill Formation, Hauterivian to Hauterivian (132.9 - 125.0 Ma)

• Ottone & Aguirre-Urreta (2000)have recently suggested an Early Hauterivian–Early Barremian age for the Estancia El Salitral outcrops through their invertebrate and palynological analyses.

Environment/lithology: terrestrial; lithified sandstone

• The formation includes a lower section, mainly continental with plant fossils, and an upper marine section with invertebrates and dinoflagellates.
• Regionally, it consists of at least three backstepping but individually prograding sandstone intervals, which may or may not be in contact with each other. Locally, the basal part or even the entire formation may be missing.

Size class: macrofossils

• The fossils studied are mainly represented by carbonized foliage leaves and scale-leaves.

Preservation: coalified, original cellulose

Collection methods: The type specimens are deposited in the Palaeobotanical Collection of the Buenos Aires Natural History Museum (BA Pb).

Primary reference: L. Villar de Seoane. 2001. Cuticular study of Bennettitales from the Springhill Formation, Lower Cretaceous of Patagonia, Argentina. Cretaceous Research 22:461-479 [C. Jaramillo/J. Moreno/J. Moreno]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 153088: authorized by Carlos Jaramillo, entered by Jessica Moreno on 06.12.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

• The terminology of Holloway (1982) and Lyshede (1978, 1982) was used for the ultrastructural analysis.
Show authors, comments, and common names
 Bennettitales -
Otozamites archangelskyi, Otozamites patagonicus n. sp., Cycadolepis coriacea, Cycadolepis involuta, Ptilophyllum antarcticum, Ptilophyllum valvatum, Pterophyllum trichomatosum
Otozamites archangelskyi Baldoni and Taylor 1983
Otozamites patagonicus n. sp. Villar de Seoane 2001
Cycadolepis coriacea Villar de Seoane 2001
Cycadolepis involuta Menéndez 1966
Ptilophyllum antarcticum Archangelsky and Baldoni 1972
Ptilophyllum valvatum Villar de Seoane 2001
Pterophyllum trichomatosum Villar de Seoane 2001