Mexilhoeira, Cascais area, level 3b: Valanginian, Portugal

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Lituolida - Haplophragmoididae
Haplophragmoides sp. Cushman 1910
Chlorophyceae - Dasycladales - Dasycladaceae
Macroporella embergeri
Gastropoda - Heterostropha - Nerineidae
Nerinea guinchoensis
Gastropoda - Naticidae
Natica mexilhoeirensis
Gastropoda - Purpurinidae
Leviathania leviathan
Bivalvia - Trigoniida - Megatrigoniidae
Pterotrigonia caudata
Bivalvia - Lucinida - Lucinidae
Fimbria corrugata
see common names

Geography
Country:Portugal
Coordinates: 38.7° North, 9.4° West (view map)
Paleocoordinates:32.8° North, 0.7° East
Basis of coordinate:based on nearby landmark
Geographic resolution:hand sample
Time
Period:Cretaceous Epoch:Early/Lower Cretaceous
Stage:Valanginian 10 m.y. bin:Cretaceous 1
Key time interval:Valanginian
Age range of interval:139.80000 - 132.60000 m.y. ago
Stratigraphy
Local section:Mexilhoeira Local bed:3b
Local order:bottom to top
Stratigraphic resolution:group of beds
Stratigraphy comments: 1.5 m
Lithology and environment
Primary lithology:gray lithified argillaceous "limestone"
Secondary lithology:black poorly lithified sandy marl
Includes fossils?Y
Includes fossils?Y
Environment:transition zone/lower shoreface
Taphonomy
Modes of preservation:body
Collection methods and comments
Collection excludes:difficult macrofossils
Collection methods:bulk,surface (in situ),field collection
Reason for describing collection:general faunal/floral analysis
Metadata
Database number:65669
Authorizer:L. Villier Enterer:L. Villier
Research group:marine invertebrate
Created:2006-09-24 08:04:48 Last modified:2006-09-24 11:04:48
Access level:the public Released:2006-09-24 08:04:47
Creative Commons license:CC BY
Reference information

Primary reference:
18719. J. Rey. 1972. Recherches géologiques sur le Crétacé inférieur de l'Estremadura (Portugal). Serviços Geologicos de Portugal 21:1-477 [L. Villier/L. Villier]