LA-29--Lanvoy outcrops: Middle Givetian, France

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Murchisoniina - Subulitidae
Subulites (Fusispira) sp. (Hall 1872)
Gastropoda - Murchisoniina - Gosseletinidae
Eoplatyzona ongaroae n. sp. Blodgett et al. 1999
Breizospira crozonensis n. sp. Blodgett et al. 1999
Angyomphalus (Eoangyomphalus n. subgen.) weyanti 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 - Murchisoniina - Lophospiridae
Finisterella tibidiensis n. sp. Blodgett et al. 1999
Gastropoda - Bellerophontida - Tropidodiscidae
Tropidodiscus sp. Meek and Worthen 1866
Sinuitina morzadeci n. sp. (Blodgett et al. 1999)
Gastropoda - Bellerophontida - Bellerophontidae
Retispira ? sp. Knight 1945
Gastropoda - Bellerophontida - Pterothecidae
Patellilabia (Phragmosphaera) ponceti n. sp. Blodgett et al. 1999
Gastropoda - Bellerophontida - Bucanellidae
Crenistriella armoricana n. sp. Blodgett et al. 1999
Gastropoda - Naticopsidae
Naticopsis sp. M'Coy 1844
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: Section LA-29; Polygnathus varcus (lower)
Lithology and environment
Primary lithology:concretionary,black,gray cherty/siliceous "shale"
Secondary lithology: siltstone
Lithology description: 10-15 m thick siliciclastic unit composed of grey to dark grey (almost black), shale and siltstone including several layers with dark grey siliceous concretions
Environment:carbonate indet.
Taphonomy
Modes of preservation:body,concretion
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection excludes:some macrofossils,some microfossils
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Taxonomic list comments:genus names are updated through pers. comm. with P. Wagner (12/99); taxonomy as presented in the published article are listed in the comments field
Metadata
Database number:5916
Authorizer:A. Miller Enterer:K. Layou
Modifier:P. Wagner Research group:marine invertebrate
Created:1999-12-15 08:33:04 Last modified:2025-02-22 15:12:02
Access level:the public Released:1999-12-15 08:33:04
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]