ammonites
LA h, Las Aguaditas North Section, ~5.5 km west and ~9.5 km south of San José da Jáchal (Ordovician of Argentina)

Where: San Juan, Argentina (30.3° S, 68.8° W: paleocoordinates 34.5° S, 132.8° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Las Aguaditas Formation, Costonian (460.9 - 457.5 Ma)

• Nemagraptus gracilis zone

• formation-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified marl and claystone

• marlstones in slumps (Fig. 2).

Size class: macrofossils

Primary reference: B.D.E. Chatterton, G. D. Edgecombe, N.E. Vaccari and B.G. Waisfeld. 1997. Ontogeny and Relationships of the Ordovician Odontopleurid Trilobite Ceratocara, with New Species from Argentina and New York. Journal of Paleontology 71(1):108-135 [P. Wagner/P. Wagner] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 70625: authorized by Pete Wagner, entered by Pete Wagner on 30.03.2007, edited by Sarah Kolbe

LA h, Las Aguaditas North Section, ~5.5 km west and ~9.5 km south of San José da Jáchal: Costonian, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita - Proetida - Tropidocoryphidae
Stenoblepharum astinil Edgecombe et al. 1997
Edgecombe et al. 1997
Trilobita - Lichida - Odontopleuridae
Ceratocara argentina Chatterton et al. 1997
Trilobita - Phacopida - Cheiruridae
Nieszkowskia sp. Schmidt 1881
Edgecombe et al. 1999
see common names

Geography
Country:Argentina State/province:San Juan
Coordinates: 30.3° South, 68.8° West (view map)
Paleocoordinates:34.5° South, 132.8° West
Basis of coordinate:based on nearby landmark
Geographic resolution:local area
Time
Period:Ordovician Epoch:Late/Upper Ordovician
Stage:early Late Ordovician 10 m.y. bin:Ordovician 4
Key time interval:Costonian
Age range of interval:460.9 - 457.5 m.y. ago
Stratigraphy
Formation:Las Aguaditas
Local section:Las Aguaditas North Local bed:100 m
Local order:bottom to top
Stratigraphic resolution:formation
Stratigraphy comments: Nemagraptus gracilis zone
Lithology and environment
Primary lithology: lithified marl
Secondary lithology: claystone
Lithology description: marlstones in slumps (Fig. 2).
Environment:deep subtidal shelf
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some macrofossils
Reason for describing collection:taxonomic analysis
Metadata
Database number:70625
Authorizer:P. Wagner, A. Miller Enterer:P. Wagner, S. Kolbe
Modifier:S. Kolbe Research group:marine invertebrate
Subset of collection #:8776
Created:2007-03-30 11:32:57 Last modified:2011-08-31 05:57:23
Access level:the public Released:2007-03-30 11:32:57
Creative Commons license:
Reference information
Primary reference:
23703 B.D.E. Chatterton, G. D. Edgecombe, N.E. Vaccari and B.G. Waisfeld. 1997. Ontogeny and Relationships of the Ordovician Odontopleurid Trilobite Ceratocara, with New Species from Argentina and New York. Journal of Paleontology 71(1):108-135 [P. Wagner/P. Wagner]

Secondary references:

633 G. D. Edgecombe, B.D.E. Chatterton, N.E. Vaccari and B.G. Waisfeld. 1997. Ontogeny of the proetid trilobite Stenoblepharum, and relationships of a new species from the Upper Ordovician of Argentina. Journal of Paleontology 71(3):419-433 [A. Miller/P. Novack-Gottshall/P. Wagner]
37329 G. D. Edgecombe, B. D. E. Chatterton, N.E. Vaccari and B.G. Waisfield. 1999. Ordovician cheirurid trilobites from the Argentine Precordillera. Journal of Paleontology 73(6):1155-1175 [A. Miller/S. Kolbe]