Cariy Sandstone, Unit 2: Telychian - Sheinwoodian, Paraguay

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Crinoidea
Crinoidea indet. Miller 1821
Pterobranchia - Graptoloidea - Monograptidae
subsp. brasiliensis Ruedemann
Trilobita - Phacopida - Calymenidae
Calymene sp. Brongniart 1822
Trilobita - Phacopida - Homalonotidae
n. sp. Wolfart
Trilobita - Phacopida - Calmoniidae
Bivalvia
? Nuculana sp. Link 1807
Hendy 2008
Nuculana = Triassic-Recent
Bivalvia - Solemyida - Ctenodontidae
? Ctenodonta sp. Salter 1852
Bivalvia - Nuculanida - Cucullellidae
Gastropoda - Murchisoniina
Wagner 2023
Tentaculita - Tentaculitidae
Strophomenata - Strophomenida - Strophochonetidae
Rhynchonellata - Rhynchonellida - Leptocoeliidae
Rhynchonellata - Rhynchonellida - Camarotoechiidae
? Camarotoechia sp. Hall and Clarke 1893
see common names

Geography
Country:Paraguay
Coordinates: 25.0° South, 58.0° West (view map)
Paleocoordinates:63.0° South, 152.7° East (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:local area
Time
Period: Silurian Epoch: Llandovery - Wenlock
Stage: Telychian - Sheinwoodian 10 m.y. bin: Silurian 1 - Silurian 2
*Epoch:Late/Upper Llandovery - Early/Lower Wenlock
Key time interval: Telychian - Sheinwoodian Other zone:  Salopochtina monterrosae
Age range of interval: 438.6 - 430.6 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Cariy Sandstone
Regional section:Formation Regional bed:2
Regional order:bottom to top
Stratigraphic resolution:member
Stratigraphy comments: Unit 2 (informal) (from bottom). Harrington provisionally places this formation as Llandovery. Grahn and Gutierrez (2001, PBDB ref. 7139), on the basis of chitinizoan zonation, conclude that it spans Telychian to Sheinwoodian ages. Unit 2
Lithology and environment
Primary lithology:micaceous,red or brown,yellow sandstone
Secondary lithology:gray claystone
Lithology description: "Well-bedded, yellow to reddish-brown, fine-grained micaceous sandstones, with intercalations of ligh-gray to whitish clay-shale..."
Environment:marine indet.
Geology comments: "The Cairy Sandstone, which forms the upper part of the Itacuburi Group, conformably overlies the Vargas Pena Shale and is unconformably overlain by upper Paleozoic glacial deposits. The sandstones and intercalated clay-shales were deposited in a marine environment, probably ranging from proximal neritic to sublittoral."
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Collection method comments: I have combined lists from Cerro Aparipi and Cerro Pero.
Metadata
Database number:25568
Authorizer:M. Foote, A. Hendy, P. Wagner Enterer:M. Foote, P. Wagner, A. Hendy
Modifier:P. Wagner Research group:marine invertebrate
Created:2002-09-18 06:46:10 Last modified:2025-02-22 15:12:02
Access level:the public Released:2002-09-18 06:46:10
Creative Commons license:CC0
Reference information

Primary reference:
7138. H. J. Harrington. 1972. Silurian of Paraguay. Geological Society of America Special Paper 133:41-50 [M. Foote/M. Foote/M. Foote]

Secondary references:

9042 P. J. Wagner. 2023. Paleozoic Gastropod, Rostroconch, Helcionelloid and Tergomyan Database (2006 - 2023). [P. Wagner/P. Wagner/P. Wagner]