Where: Argentina (31.0° S, 69.0° W: paleocoordinates 34.7° S, 131.9° W)
• local area-level geographic resolution
When: Early/Lower Llanvirn (468.0 - 461.1 Ma)
• Transition zone between San Juan and Gualcamayo or Los Azules formations
• group of beds-level stratigraphic resolution
Environment/lithology: offshore shelf; lithified, gray, argillaceous limestone
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: S. H. Peralta. 1995. La Formacion Gualcamayo en la Sierra de Villicum: sus Graptolitos y fauna asociadas. Boletin de la Academia Nacional de Ciencas 60(3-4):401-408 [A. Miller/P. Novack-Gottshall]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 8870: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 02.09.2000
Creative Commons license: CC BY (attribution)
Taxonomic list
| unclassified | |
| Conodonta | |
|
Eoplacognathus sp. Hamar 1966 conodont | |
|
Amorphognathus sp. Branson and Mehl 1933 conodont | |
| Cephalopoda | |
|
Lituites sp. Bertrand 1763 | |
| Gastropoda | |
|
Maclurites sp. Le Sueur 1818 snail | |
| Trilobita | |
|
Annamitella sp. Mansuy 1920 trilobite | |
|
? Illaenus sp. Dalman 1827 trilobite | |
|
Triarthrus sp. Green 1832 trilobite | |
|
Australoharpes precordilleranus Baldis and Gonzalez 1986 trilobite | |
|
Mendolaspis sp. Rusconi 1951 trilobite | |