Pur-4 concretions: Guzhangian, Spain

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Agnostida - Peronopsidae
Peronopsis cf. insignis
Agnostida - Diplagnostidae
Oidalagnostus trispirifer
Trilobita - Ptychopariida - Conocoryphidae
Bailiaspis glabrata (Angelin 1878)
Questionably assigned to genus
Trilobita - Ptychopariida - Ptychopariidae
Holasaphus cf. centropyge
Trilobita - Redlichiida - Agraulidae
Proampyx difformis
see common names

Geography
Country:Spain
Coordinates: 41.7° North, 1.8° West (view map)
Paleocoordinates:58.0° South, 108.2° East
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Cambrian Epoch:Miaolingian
Stage:Guzhangian 10 m.y. bin:Cambrian 4
Key time interval:Guzhangian
Age range of interval:500.50000 - 497.00000 m.y. ago
Stratigraphy
Formation:Valtorres
Lithology and environment
Primary lithology:burrows lithified "shale"
Includes fossils?Y
Environment:marine indet.
Taphonomy
Modes of preservation:body,concretion
Size of fossils:mesofossils
Collection methods and comments
Collection excludes:difficult macrofossils
Collection methods:surface (in situ),mechanical
Reason for describing collection:taxonomic analysis
Metadata
Database number:182506
Authorizer:M. Hopkins Enterer:M. Hopkins
Research group:marine invertebrate
Created:2016-11-03 11:00:26 Last modified:2016-11-03 11:00:26
Access level:the public Released:2016-11-03 11:00:26
Creative Commons license:CC BY
Reference information

Primary reference:
60702. J. J. Alvaro, S. Zamora, D. Vizcaïno and P. Ahlberg. 2013. Guzhangian (mid Cambrian) trilobites from siliceous concretions of the Valtorres Formation, Iberian Chains, NE Spain. Geology 150(1):123-142 [M. Hopkins/M. Hopkins]