A2-Arroyo La Laguna, Bed 437, San Juan: Toarcian, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Ammonitida - Hildoceratidae
Harpoceratinae indet. Neumayr 1875
Gastropoda
Gastropoda indet. Cuvier 1795
Bivalvia
Bivalvia indet. Linnaeus 1758
Bivalvia - Trigoniida - Myophorellidae
Myophorella sp. Bayle 1878
Bivalvia - Mytilida - Mytilidae
Lycettia hypertrigona
Bivalvia - Pectinida - Propeamussiidae
Parvamussium pumilum (Lamarck 1819)
Damborenea 2002
Bivalvia - Ostreida - Bakevelliidae
Gervillia (Cultriopsis) sp. Cossman 1904
Bivalvia - Ostreida - Pinnidae
Pinna cf. folium Young and Bird 1822
Bivalvia - Arcida - Parallelodontidae
Parallelodon sp. Meek and Worthen 1866
Bivalvia - Arcida - Cucullaeidae
Cucullaea rothi
unclassified
Brachiopoda indet. Cuvier 1805
see common names

Geography
Country:Argentina State/province:San Juan
Coordinates: 32.3° South, 70.0° West (view map)
Paleocoordinates:30.6° South, 32.1° West
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period:Jurassic Epoch:Early/Lower Jurassic
Stage:Toarcian 10 m.y. bin:Jurassic 3
Key time interval:Toarcian
Age range of interval:184.20000 - 174.70000 m.y. ago
Stratigraphy
Formation:El Cholo
Local section:Arroyo La Laguna Local bed:437
Local order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: formation also known as Puesto Araya; within D. hoelderi ammonite zone
Lithology and environment
Primary lithology:brown,gray sandstone
Secondary lithology: "limestone"
Lithology description: gray-brown sandstones and limestones, highly fossiliferous
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:33704
Authorizer:A. Miller, M. Aberhan Enterer:K. Layou, S. Nurnberg
Modifier:A. Khan Research group:marine invertebrate
Created:2003-08-05 14:07:26 Last modified:2013-08-17 09:56:16
Access level:the public Released:2003-08-05 14:07:26
Creative Commons license:CC BY
Reference information

Primary reference:
3975. S. E. Damborenea. 1987. Early Jurassic Bivalvia of Argentina: Part 1, Stratigraphical introduction and superfamilies Nuculanacea, Arcacea, Mytilacea and Pinnacea. Palaeontographica A199(1-3):23-111 [W. Kiessling/W. Kiessling]

Secondary references:

9861 S. E. Damborenea. 2002. Early Jurassic bivalves of Argentina: Part 3, Superfamilies Monotoidea, Pectinoidea, Plicatuloidea and Dimyoidea. Palaeontographica Abteilung A 265(1-4):1-119 [M. Aberhan/S. Nurnberg/S. Nurnberg]