Bajada del Agrio - Basal facies, Neuquen, Argentina: Late/Upper Valanginian, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Mytilida - Mytilidae
Modiolus cf. subsimplex (d'Orbigny 1850)
Bivalvia - Ostreida - Pinnidae
Pinna robinaldina d'Orbigny 1844
Bivalvia - Arcida - Cucullaeidae
Cucullaea gabrielis
Bivalvia - Trigoniida - Myophorellidae
Steinmanella transitoria Steinmann 1881
Steinmanella pehuenmapuensis Leanza 1998
see common names

Geography
Country:Argentina
Coordinates: 38.0° South, 69.8° West (view map)
Paleocoordinates:37.0° South, 32.9° West
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Early/Lower Cretaceous
Stage:Valanginian 10 m.y. bin:Cretaceous 1
Key time interval:Late/Upper Valanginian
Age range of interval:140.20000 - 136.40000 m.y. ago
Stratigraphy
Formation:Bajada del Agria Local bed:1
Local order:bottom to top
Stratigraphic resolution:group of beds
Stratigraphy comments: Basal facies
Lithology and environment
Primary lithology:gray lithified mudstone
Secondary lithology:concretionary lithified "limestone"
Includes fossils?Y
Includes fossils?Y
Environment:transition zone/lower shoreface
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:44678
Authorizer:W. Kiessling Enterer:W. Kiessling
Modifier:W. Kiessling Research group:marine invertebrate
Created:2004-09-16 11:07:50 Last modified:2004-09-17 03:50:42
Access level:the public Released:2004-09-16 11:07:50
Creative Commons license:CC BY
Reference information

Primary reference:

11681. D. G. Lazo. 2003. Taxonomy, facies relationships and palaeobiology of bakevelliid bivalves from the Lower Cretaceous of west-central Argentina . Cretaceous Research 24(6):765-788 [W. Kiessling/W. Kiessling/W. Kiessling]