Springhill- Estancia El Salitral: Hauterivian - Barremian, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bennettitales
Otozamites patagonicus n. sp. Villar de Seoane 2001
Otozamites archangelskyi Baldoni and Taylor 1983
Cycadolepis involuta Menéndez 1966
Cycadolepis coriacea Villar de Seoane 2001
Pterophyllum trichomatosum Villar de Seoane 2001
Ptilophyllum valvatum Villar de Seoane 2001
Ptilophyllum antarcticum Archangelsky and Baldoni 1972
see common names

Geography
Country:Argentina State/province:Santa Cruz
Coordinates: 47.3° South, 71.8° West (view map)
Paleocoordinates:47.2° South, 35.1° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Cretaceous Epoch:Early/Lower Cretaceous
10 m.y. bin:Cretaceous 2
Key time interval:Hauterivian - Barremian
Age range of interval:132.60000 - 121.40000 m.y. ago
Stratigraphy
Formation:Springhill
Stratigraphy comments: 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.
Lithology and environment
Primary lithology: lithified sandstone
Lithology description: 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.
Environment:terrestrial indet.
Geology comments: The formation includes a lower section, mainly continental with plant fossils, and an upper marine section with invertebrates and dinoflagellates.
Taphonomy
Modes of preservation:coalified,original cellulose
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Collection method comments: The type specimens are deposited in the Palaeobotanical Collection of the Buenos Aires Natural History Museum (BA Pb).
Taxonomic list comments:The terminology of Holloway (1982) and Lyshede (1978, 1982) was used for the ultrastructural analysis.
Metadata
Database number:153088
Authorizer:C. Jaramillo Enterer:J. Moreno
Research group:paleobotany
Created:2013-12-06 09:53:18 Last modified:2013-12-06 09:53:18
Access level:authorizer only Released:2016-12-06 09:53:18
Creative Commons license:CC BY
Reference information

Primary reference:
49298. 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]