Where: Argentina (31.0° S, 69.0° W: paleocoordinates 33.8° S, 133.9° W)
• local area-level geographic resolution
When: Portezuelo Tontal Formation, Late/Upper Llandeilo (461.1 - 458.4 Ma)
• formation-level stratigraphic resolution
Environment/lithology: submarine fan; lithified sandstone
Collection methods: JA: marked by Novack-Gottshall without explanation as omitting some genera, some macrofossils, some microfossils, and species names, but apparently complete
Primary reference: A. Cuerda, R. Varela, C. Cingolani and O. Schauer. 1988. Nuevas localidades con graptolitos en la Formacion Portezuelo Tontal (Ordovicico), Sector Septentrional de la Sierra del Tontal, Precordillera de San Juan, Argentina. Ameghiniana 25(2):175-183 [A. Miller/P. Novack-Gottshall/M. Uhen]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 8892: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 02.09.2000
Creative Commons license: CC BY (attribution)
Taxonomic list
Pterobranchia | |
Didymograptus sp. McCoy 1851 graptolite | |
Glyptograptus sp. Lapworth 1873 graptolite | |
Diplograptus sp. graptolite | |
Dicellograptus sp. Hopkinson 1871 graptolite
Dicranograptus sp. Hall 1865 graptolite |