Tucumilla Fm., Cuesta de Erquis, Bolivia: Tremadoc, Bolivia

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Bellerophontida - Bucaniidae
Gastropoda - Bellerophontida - Tropidodiscidae
Lingulata - Lingulida - Elkaniidae
Broeggeria sp. Walcott 1902
Rhynchonellata - Orthida - Finkelnburgiidae
Artiopoda - Olenida - Olenidae
Angelina sp. Salter 1859
Parabolina sp. Salter 1849
Jujuyaspis sp. Kobayashi 1936
Artiopoda - Asaphida - Asaphidae
Asaphellus sp. Callaway 1877
Artiopoda - Asaphida - Remopleurididae
Kainella sp. Walcott 1925
Richardsonella sp. Raymond 1924
Artiopoda - Ptychopariida - Shumardiidae
Shumardia sp. Billings 1862
Artiopoda - Agnostida - Agnostidae
Micragnostus sp. Howell 1935
Pterobranchia - Dendroidea - Acanthograptidae
Dictyonema sp. Hall 1851
see common names

Geography
Country:Bolivia
Coordinates: 21.0° South, 65.0° West (view map)
Paleocoordinates:33.0° South, 160.5° West (Wright 2013)
Geographic resolution:outcrop
Time
Period: Ordovician Epoch: Early Ordovician
Stage: Tremadocian 10 m.y. bin: Ordovician 1
*Period:Early/Lower Ordovician *Epoch:Early/Lower Tremadoc
*International age/stage:Early/Lower Tremadoc
Key time interval: Tremadoc
Age range of interval: 486.4 - 477.1 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Tucumilla
Stratigraphic resolution:formation
Lithology and environment
Primary lithology:green,red or brown,yellow lithified argillaceous siltstone
Secondary lithology: sandstone
Lithology description: alternating olive-green siltstone, yellowish-white to brownish sandstone and olive green shale
Environment:transition zone/lower shoreface
Taphonomy
Collection methods and comments
Reason for describing collection:taxonomic analysis
Collection method comments: JA: marked by Novack-Gottshall without explanation as omitting some genera, some macrofossils, some microfossils, and species names, but apparently complete
Taxonomic list comments:Primarily trilobite taxonomy
Metadata
Database number:8838
Authorizer:A. Miller Enterer:P. Novack-Gottshall
Modifier:J. Alroy Research group:marine invertebrate
Created:2000-09-01 11:05:27 Last modified:2025-02-22 15:12:02
Access level:the public Released:2000-11-20 13:53:40
Creative Commons license:CC0
Reference information

Primary reference:
665.1% 12160A. Pribyl and J. Vanek. 1980. Ordovician trilobites of Bolivia. Rozpravy Ceskoslovenske Akademie Ved. Rada Matematickych a Prirodnich Ved. Academia Praha, Prague, Czechoslovakia 90(2):1-90 [A. Miller/P. Novack-Gottshall/A. Hendy]