d'Ecalgrain beds, Normandy (Ordovician of France)

Where: Manche, France (49.5° N, 1.6° W: paleocoordinates 67.3° S, 66.7° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Schistes d'Ecalgrain Formation, Berounian (460.9 - 449.5 Ma)

• d'Ecalgrain beds. PJW: given as Vauville formation. However, these should be Schistes d'Ecalgrain, which overlie the Grès de May in Normandy. These would be Berounian in age.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; shale

Size class: macrofossils

Primary reference: A. Arnaud and J. Pillet. 1971. Sur l'existence de caradocien a trilobites dans le synclinal de Saint-Julien-de-Vouvantes-Angers (sud-est du Massif armoricain). Mémoires du Bureau de Recherches Géologiques et Minières 73:151-161 [A. Miller/P. Novack-Gottshall/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 20849: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 10.06.2002, edited by Pete Wagner and Austin Hendy

Creative Commons license: CC BY (attribution)

Taxonomic list

Anthozoa
 Favositida - Favositidae
Paleofavosites sp. Twenhofel 1914 tabulate coral
[entered as Palaeofavosites sp.]
Gastropoda
  -
Gastropoda indet.2 Cuvier 1795 snail
Bivalvia
  -
Bivalvia indet.1 Linnaeus 1758 clam
 Modiomorphida - Modiomorphidae
Modiolopsis sp. Hall 1847 clam
Redonia sp. Rouault 1851 clam
Strophomenata
 Strophomenida - Rafinesquinidae
Rafinesquina sp. Hall and Clarke 1892
Rhynchonellata
 Orthida - Dalmanellidae
? Crassiorina sp. Havlíček 1950
 Orthida - Draboviidae
Stenolaemata
 Trepostomata - Trematoporidae
Batostoma sp. Ulrich 1882
Trilobita
 Trinucleida - Trinucleidae
Cryptolithus sp. Green 1832 trilobite
Onnia sp. Bancroft 1933 trilobite
 Phacopida - Homalonotidae
Colpocoryphe sp. Novak and Perner 1918 trilobite
 Phacopida - Dalmanitidae
Chattiaspis sp. Struve 1958 trilobite
Dalmanitina sp. Reed 1905 trilobite
"Eodalmanitina sp." = Mucronaspis Destombes 1963 trilobite
? Eudolatites sp. Delo 1935 trilobite
 Phacopida - Acastidae
Kloucekia sp. Delo 1935 trilobite