LA12--Lanvoy outcrop: Middle Givetian, France

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Murchisoniina - Gosseletinidae
Angyomphalus (Eoangyomphalus) weyanti n. sp. Blodgett et al. 1999
Gastropoda - Murchisoniina - Loxonematidae
Nodoloxonema plusquelleci n. sp. Blodgett et al. 1999
Gastropoda - Murchisoniina - Palaeozygopleuridae
Palaeozygopleura sp. Horný 1955
Gastropoda - Murchisoniina - Murchisoniidae
Parahormotomina sibertae n. sp. Blodgett et al. 1999
Gastropoda - Bellerophontida - Tropidodiscidae
Sinuitina morzadeci n. sp. (Blodgett et al. 1999)
Gastropoda - Bellerophontida - Pterothecidae
Patellilabia (Phragmosphaera) ponceti Blodgett et al. 1999
Gastropoda - Bellerophontida - Bucanellidae
Crenistriella armoricana n. sp. Blodgett et al. 1999
Gastropoda - Euomphalina - Platyceratidae
Brokenriveria cf. caelata (Goldfuss 1844)
see common names

Geography
Country:France State/province:Brittany
Coordinates: 48.3° North, 4.2° West (view map)
Paleocoordinates:26.1° South, 2.6° West (Wright 2013)
Basis of coordinate:based on political unit
Geographic resolution:small collection
Time
Period: Devonian
10 m.y. bin: Devonian 3-4
*Epoch:Middle Middle Devonian - Late/Upper Middle Devonian
*International age/stage:Middle Givetian
Key time interval: Middle Givetian Conodont zone:  Polygnathus varcus
Age range of interval: 385.9 - 383.7 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Kersadiou
Stratigraphic resolution:group of beds
Stratigraphy comments: LA-12; Polygnathus varcus (lower)
Lithology and environment
Primary lithology:concretionary,black,gray cherty/siliceous "shale"
Secondary lithology: siltstone
Lithology description: a 10-15 m thick, siliciclastic unit composed of gray to dark gray (almost black), shale and siltstone including several layers with dark grey siliceous concretions.
Environment:carbonate indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection excludes:all microfossils,some macrofossils
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:5915
Authorizer:A. Miller Enterer:K. Layou
Modifier:P. Wagner Research group:marine invertebrate
Created:1999-12-15 08:17:17 Last modified:2025-02-22 15:12:02
Access level:the public Released:1999-12-15 08:17:17
Creative Commons license:CC0
Reference information

Primary reference:
374. R. B. Blodgett, J. Fryda, and P. R. Racheboeuf. 1999. Upper Middle Devonian (Givetian) gastropods from the Kersadiou Formation, Brittany, France. Journal of Paleontology 73(6):1081-1100 [A. Miller/K. Layou/P. Wagner]