Cryptothyrella-Mendacella Community, Merida Andes: Llandovery, Venezuela

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Rhynchonellata - Atrypida - Atrypinidae
Rhynchonellata - Athyridida - Meristellidae
Rhynchonellata - Rhynchonellida - Trigonirhynchiidae
Ancillotoechia sp. Havlicek 1959
genus name in quotes
Rhynchonellata - Orthida - Dalmanellidae
Resserella sp. Bancroft 1928
genus name in quotes
Rhynchonellata - Orthida - Rhipidomellidae
Mendacella cf. uberis (Billings 1866)
Strophomenata - Orthotetida - Chilidiopsidae
Fardenia filistriata Boucot et al. 1972
Strophomenata - Strophomenida - Sowerbyellidae
sp. A
Strophomenata - Strophomenida - Leptostrophiidae
Strophomenata - Strophomenida - Rafinesquinidae
see common names

Geography
Country:Venezuela
Coordinates: 8.6° North, 71.2° West (view map)
Paleocoordinates:66.1° South, 126.4° West (Wright 2013)
Basis of coordinate:based on political unit
Geographic resolution:basin
Time
Period: Silurian Epoch: Llandovery
10 m.y. bin: Silurian 1
*Epoch:Early/Lower Llandovery - Middle Llandovery
Key time interval: Llandovery
Age range of interval: 443.1 - 432.9 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:El Horno
Stratigraphic resolution:formation
Stratigraphy comments: see Boucot et al. 1972--PBDB ref. 7026. This was originally part of the Caparo Formation, but that is now restricted to the Sandbian.
Lithology and environment
Primary lithology: argillaceous sandstone
Includes fossils?Y
Lithology description: "Occurs in muddy sandstones as largely disarticulated shells scattered on bedding planes."
Environment:marine indet.
Geology comments: "A moderate energy environment is indicated. A BA 2 assignment is indicated on the basis of materials seen elsewhere."
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:paleoecologic analysis
Metadata
Database number:25068
Authorizer:M. Foote Enterer:M. Foote
Modifier:P. Wagner Research group:marine invertebrate
Created:2002-08-27 13:05:38 Last modified:2025-02-22 15:12:02
Access level:the public Released:2002-08-27 13:05:38
Creative Commons license:CC0
Reference information

Primary reference:
7007. A. J. Boucot, J. L. Benedetto, Y. Grahn, J. H. G. Melo, T. M. Sanchez and B. A. Waisfeld. 1999. South American marine Silurian communities. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 841-848 [M. Foote/M. Foote/M. Foote]